Mirkov, Nikola S.

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orcid::0000-0002-3057-9784
  • Mirkov, Nikola S. (9)
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Author's Bibliography

Some new results on f-contractions in 0-complete partial metric spaces and 0-complete metric-like spaces

Radenović, Stojan; Mirkov, Nikola S.; Paunović, Ljiljana R.

(2021)

TY  - JOUR
AU  - Radenović, Stojan
AU  - Mirkov, Nikola S.
AU  - Paunović, Ljiljana R.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9800
AB  - Within this manuscript we generalize the two recently obtained results of O. Popescu and G. Stan, regarding the F-contractions in complete, ordinary metric space to 0-complete partial metric space and 0-complete metric-like space. As Popescu and Stan we use less conditions than D. Wardovski did in his paper from 2012, and we introduce, with the help of one of our lemmas, a new method of proving the results in fixed point theory. Requiring that the function F only be strictly increasing, we obtain for consequence new families of contractive conditions that cannot be found in the existing literature. Note that our results generalize and complement many well-known results in the fixed point theory. Also, at the end of the paper, we have stated an application of our theoretical results for solving fractional differential equations. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
T2  - Fractal and Fractional
T1  - Some new results on f-contractions in 0-complete partial metric spaces and 0-complete metric-like spaces
VL  - 5
IS  - 2
DO  - 10.3390/fractalfract5020034
ER  - 
@article{
author = "Radenović, Stojan and Mirkov, Nikola S. and Paunović, Ljiljana R.",
year = "2021",
abstract = "Within this manuscript we generalize the two recently obtained results of O. Popescu and G. Stan, regarding the F-contractions in complete, ordinary metric space to 0-complete partial metric space and 0-complete metric-like space. As Popescu and Stan we use less conditions than D. Wardovski did in his paper from 2012, and we introduce, with the help of one of our lemmas, a new method of proving the results in fixed point theory. Requiring that the function F only be strictly increasing, we obtain for consequence new families of contractive conditions that cannot be found in the existing literature. Note that our results generalize and complement many well-known results in the fixed point theory. Also, at the end of the paper, we have stated an application of our theoretical results for solving fractional differential equations. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.",
journal = "Fractal and Fractional",
title = "Some new results on f-contractions in 0-complete partial metric spaces and 0-complete metric-like spaces",
volume = "5",
number = "2",
doi = "10.3390/fractalfract5020034"
}
Radenović, S., Mirkov, N. S.,& Paunović, L. R.. (2021). Some new results on f-contractions in 0-complete partial metric spaces and 0-complete metric-like spaces. in Fractal and Fractional, 5(2).
https://doi.org/10.3390/fractalfract5020034
Radenović S, Mirkov NS, Paunović LR. Some new results on f-contractions in 0-complete partial metric spaces and 0-complete metric-like spaces. in Fractal and Fractional. 2021;5(2).
doi:10.3390/fractalfract5020034 .
Radenović, Stojan, Mirkov, Nikola S., Paunović, Ljiljana R., "Some new results on f-contractions in 0-complete partial metric spaces and 0-complete metric-like spaces" in Fractal and Fractional, 5, no. 2 (2021),
https://doi.org/10.3390/fractalfract5020034 . .
1
1

An Application of VLES Turbulent Flow Simulation Methodology to Flow over Smooth Hills

Mirkov, Nikola S.

(2020)

TY  - CHAP
AU  - Mirkov, Nikola S.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8523
AB  - This study aims at examining predictive capabilities of a specific global (non-zonal) hybrid RANS/LES turbulent flow simulation strategy in the case of flow over smooth hills. The rationale behind recent popularity of such an approach are constraints on computational resources when one is faced with practical LES for realistic engineering flows. In present approach, which originates from the seminal work of Speziale, simulation is performed on coarser computational meshes then required by LES constraints, where the large part of turbulent kinetic energy is unresolved. A challenge of accurate prediction of wall-bounded flows is approached in hybrid models by blending two approaches (RANS and LES) into a single global model, whereby switching is applied seamlessly based on considerations of turbulent flow and grid scales. The RANS part of the hybrid model is supposed to be active in the vicinity of the wall, and the swift transition to LES model should be performed away from the wall, on a desired distance defined by calibration of switching parameters. In our study we perform transient VLES simulation on a model of smooth hill at laboratory scale, resembling well documented wind tunnel experiment, and study in detail statistical flow properties by comparisons with the experimental results. Special attention is given to hybrid model switching behavior in the said case. The study gives very useful insight into simulation of flows of the industrial and environmental types. © Springer Nature Switzerland AG 2020.
T2  - Lecture Notes in Networks and Systems
T1  - An Application of VLES Turbulent Flow Simulation Methodology to Flow over Smooth Hills
VL  - 90
SP  - 288
EP  - 304
DO  - 10.1007/978-3-030-30853-7_17
ER  - 
@inbook{
author = "Mirkov, Nikola S.",
year = "2020",
abstract = "This study aims at examining predictive capabilities of a specific global (non-zonal) hybrid RANS/LES turbulent flow simulation strategy in the case of flow over smooth hills. The rationale behind recent popularity of such an approach are constraints on computational resources when one is faced with practical LES for realistic engineering flows. In present approach, which originates from the seminal work of Speziale, simulation is performed on coarser computational meshes then required by LES constraints, where the large part of turbulent kinetic energy is unresolved. A challenge of accurate prediction of wall-bounded flows is approached in hybrid models by blending two approaches (RANS and LES) into a single global model, whereby switching is applied seamlessly based on considerations of turbulent flow and grid scales. The RANS part of the hybrid model is supposed to be active in the vicinity of the wall, and the swift transition to LES model should be performed away from the wall, on a desired distance defined by calibration of switching parameters. In our study we perform transient VLES simulation on a model of smooth hill at laboratory scale, resembling well documented wind tunnel experiment, and study in detail statistical flow properties by comparisons with the experimental results. Special attention is given to hybrid model switching behavior in the said case. The study gives very useful insight into simulation of flows of the industrial and environmental types. © Springer Nature Switzerland AG 2020.",
journal = "Lecture Notes in Networks and Systems",
booktitle = "An Application of VLES Turbulent Flow Simulation Methodology to Flow over Smooth Hills",
volume = "90",
pages = "288-304",
doi = "10.1007/978-3-030-30853-7_17"
}
Mirkov, N. S.. (2020). An Application of VLES Turbulent Flow Simulation Methodology to Flow over Smooth Hills. in Lecture Notes in Networks and Systems, 90, 288-304.
https://doi.org/10.1007/978-3-030-30853-7_17
Mirkov NS. An Application of VLES Turbulent Flow Simulation Methodology to Flow over Smooth Hills. in Lecture Notes in Networks and Systems. 2020;90:288-304.
doi:10.1007/978-3-030-30853-7_17 .
Mirkov, Nikola S., "An Application of VLES Turbulent Flow Simulation Methodology to Flow over Smooth Hills" in Lecture Notes in Networks and Systems, 90 (2020):288-304,
https://doi.org/10.1007/978-3-030-30853-7_17 . .

Numerical Simulation of Crack Propagation in Seven-Wire Strand

Kastratović, Gordana M.; Vidanović, Nenad D.; Grbović, Aleksandar M.; Mirkov, Nikola S.; Rašuo, Boško P.

(2020)

TY  - CHAP
AU  - Kastratović, Gordana M.
AU  - Vidanović, Nenad D.
AU  - Grbović, Aleksandar M.
AU  - Mirkov, Nikola S.
AU  - Rašuo, Boško P.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8525
AB  - This paper discusses certain aspects of numerical simulation of crack propagation in wire ropes subjected to axial loading, with the aim to explore and to demonstrate the capacity, performances and difficulties of crack propagation modeling by usage of numerical computational methods in such complex structures. For this purpose, the finite element method (FEM) was used, and 3D numerical analyses were performed in Ansys Workbench software. In order to validate and verify performed numerical modeling, crack growth rate based on calculated stress intensity factors (SIFs) along the crack fronts was obtained for the model for which experimental results could be found in the available literature. Finally, using the advanced modeling techniques, the parametric 3D model of seven-wire strand was analyzed. Conducted analysis showed that FEM could be a powerful tool for fatigue life predictions in order to reduce the need for experiments, which are still the only successful method for fatigue life estimation of wire ropes. © Springer Nature Switzerland AG 2020.
T2  - Lecture Notes in Networks and Systems
T1  - Numerical Simulation of Crack Propagation in Seven-Wire Strand
VL  - 90
SP  - 76
EP  - 91
DO  - 10.1007/978-3-030-30853-7_5
ER  - 
@inbook{
author = "Kastratović, Gordana M. and Vidanović, Nenad D. and Grbović, Aleksandar M. and Mirkov, Nikola S. and Rašuo, Boško P.",
year = "2020",
abstract = "This paper discusses certain aspects of numerical simulation of crack propagation in wire ropes subjected to axial loading, with the aim to explore and to demonstrate the capacity, performances and difficulties of crack propagation modeling by usage of numerical computational methods in such complex structures. For this purpose, the finite element method (FEM) was used, and 3D numerical analyses were performed in Ansys Workbench software. In order to validate and verify performed numerical modeling, crack growth rate based on calculated stress intensity factors (SIFs) along the crack fronts was obtained for the model for which experimental results could be found in the available literature. Finally, using the advanced modeling techniques, the parametric 3D model of seven-wire strand was analyzed. Conducted analysis showed that FEM could be a powerful tool for fatigue life predictions in order to reduce the need for experiments, which are still the only successful method for fatigue life estimation of wire ropes. © Springer Nature Switzerland AG 2020.",
journal = "Lecture Notes in Networks and Systems",
booktitle = "Numerical Simulation of Crack Propagation in Seven-Wire Strand",
volume = "90",
pages = "76-91",
doi = "10.1007/978-3-030-30853-7_5"
}
Kastratović, G. M., Vidanović, N. D., Grbović, A. M., Mirkov, N. S.,& Rašuo, B. P.. (2020). Numerical Simulation of Crack Propagation in Seven-Wire Strand. in Lecture Notes in Networks and Systems, 90, 76-91.
https://doi.org/10.1007/978-3-030-30853-7_5
Kastratović GM, Vidanović ND, Grbović AM, Mirkov NS, Rašuo BP. Numerical Simulation of Crack Propagation in Seven-Wire Strand. in Lecture Notes in Networks and Systems. 2020;90:76-91.
doi:10.1007/978-3-030-30853-7_5 .
Kastratović, Gordana M., Vidanović, Nenad D., Grbović, Aleksandar M., Mirkov, Nikola S., Rašuo, Boško P., "Numerical Simulation of Crack Propagation in Seven-Wire Strand" in Lecture Notes in Networks and Systems, 90 (2020):76-91,
https://doi.org/10.1007/978-3-030-30853-7_5 . .
5
4

freeCappuccino - An Open Source Software Library for Computational Continuum Mechanics

Mirkov, Nikola S.; Vidanović, Nenad D.; Kastratović, Gordana M.

(2019)

TY  - CHAP
AU  - Mirkov, Nikola S.
AU  - Vidanović, Nenad D.
AU  - Kastratović, Gordana M.
PY  - 2019
UR  - http://link.springer.com/10.1007/978-3-319-99620-2_11
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8107
AB  - The paper describes development of an open-source library (www.github.com/nikola-m/freeCappuccino) for computational fluid dynamics and in general computational continuum mechanics. The code is based on finite volume method on arbitrary unstructured polyhedral meshes. The interfaces to highly abstract data types such as arbitrary order tensor fields on discretized finite volume domains, and scalar and vector sparse linear systems resulting from finite volume discretization of partial differential equations are provided. Explicit manipulation of tensor fields through high level, highly abstract programming syntax is explained. Also, implicit operation over tensor fields pertinent to discretization of partial differential operators is provided and explained. The library is developed in modern version of Fortran. Code parallelization is achieved through domain decomposition and implemented using MPI and OpenMP. While avoiding the usual class syntax of object-oriented programming, the code has essentially object oriented design. Comparison is made with the well-known OpenFOAM library. The purpose of the ongoing development is providing researchers with a tool for easy transfer of mathematical operations of their physical models into functional and efficient simulation software based on finite volume method. The guiding principle of development is exchange of ideas and reproducibility in computational science in general.
T2  - Lecture Notes in Networks and Systems
T1  - freeCappuccino - An Open Source Software Library for Computational Continuum Mechanics
VL  - 54
SP  - 137
EP  - 147
DO  - 10.1007/978-3-319-99620-2_11
ER  - 
@inbook{
author = "Mirkov, Nikola S. and Vidanović, Nenad D. and Kastratović, Gordana M.",
year = "2019",
abstract = "The paper describes development of an open-source library (www.github.com/nikola-m/freeCappuccino) for computational fluid dynamics and in general computational continuum mechanics. The code is based on finite volume method on arbitrary unstructured polyhedral meshes. The interfaces to highly abstract data types such as arbitrary order tensor fields on discretized finite volume domains, and scalar and vector sparse linear systems resulting from finite volume discretization of partial differential equations are provided. Explicit manipulation of tensor fields through high level, highly abstract programming syntax is explained. Also, implicit operation over tensor fields pertinent to discretization of partial differential operators is provided and explained. The library is developed in modern version of Fortran. Code parallelization is achieved through domain decomposition and implemented using MPI and OpenMP. While avoiding the usual class syntax of object-oriented programming, the code has essentially object oriented design. Comparison is made with the well-known OpenFOAM library. The purpose of the ongoing development is providing researchers with a tool for easy transfer of mathematical operations of their physical models into functional and efficient simulation software based on finite volume method. The guiding principle of development is exchange of ideas and reproducibility in computational science in general.",
journal = "Lecture Notes in Networks and Systems",
booktitle = "freeCappuccino - An Open Source Software Library for Computational Continuum Mechanics",
volume = "54",
pages = "137-147",
doi = "10.1007/978-3-319-99620-2_11"
}
Mirkov, N. S., Vidanović, N. D.,& Kastratović, G. M.. (2019). freeCappuccino - An Open Source Software Library for Computational Continuum Mechanics. in Lecture Notes in Networks and Systems, 54, 137-147.
https://doi.org/10.1007/978-3-319-99620-2_11
Mirkov NS, Vidanović ND, Kastratović GM. freeCappuccino - An Open Source Software Library for Computational Continuum Mechanics. in Lecture Notes in Networks and Systems. 2019;54:137-147.
doi:10.1007/978-3-319-99620-2_11 .
Mirkov, Nikola S., Vidanović, Nenad D., Kastratović, Gordana M., "freeCappuccino - An Open Source Software Library for Computational Continuum Mechanics" in Lecture Notes in Networks and Systems, 54 (2019):137-147,
https://doi.org/10.1007/978-3-319-99620-2_11 . .
2
1

New Non-Orthogonality Treatment for Atmospheric Boundary Layer Flow Simulation Above Highly Non-Uniform Terrains

Mirkov, Nikola S.; Stevanović, Žarko M.

(2016)

TY  - JOUR
AU  - Mirkov, Nikola S.
AU  - Stevanović, Žarko M.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1146
AB  - In this paper we validate an improved finite volume approximation of Reynolds averaged Navier-Stokes equations for simulation of wind flows in body-fitted grids generated by algebraic extrusion from digital terrain elevation data, proposed in Mirkov et. al. [1]. The approach is based on second-order accurate finite volume method with collocated variable arrangement and pressure-velocity coupling trough SIMPLE algorithm. The main objective is the attenuation of spurious pressure field oscillations in regions with discontinuity in grid line slopes, as encountered in grids representing highly non-uniform terrains. Moreover, the approach relaxes the need for grid generation based on elliptic partial differential equation or grid smoothing by applying fixed point iterations (i. e. Gauss-Seidel) to initial grid node positions resulting from algebraic grid generators. Drawbacks of previous approaches which ignored treatment of finite volume grid cell cases with intersection point offset in non-orthogonality corrections are removed. Application to real-life wind farm project at Dobric (Svrljig, Serbia) is used to assess the effectiveness of the method. The results validate the view in which accurate discretization of governing equations play more important role than the choice of turbulence modeling closures.
T2  - Thermal Science
T1  - New Non-Orthogonality Treatment for Atmospheric Boundary Layer Flow Simulation Above Highly Non-Uniform Terrains
VL  - 20
SP  - S223
EP  - S233
DO  - 10.2298/TSCI151025197M
ER  - 
@article{
author = "Mirkov, Nikola S. and Stevanović, Žarko M.",
year = "2016",
abstract = "In this paper we validate an improved finite volume approximation of Reynolds averaged Navier-Stokes equations for simulation of wind flows in body-fitted grids generated by algebraic extrusion from digital terrain elevation data, proposed in Mirkov et. al. [1]. The approach is based on second-order accurate finite volume method with collocated variable arrangement and pressure-velocity coupling trough SIMPLE algorithm. The main objective is the attenuation of spurious pressure field oscillations in regions with discontinuity in grid line slopes, as encountered in grids representing highly non-uniform terrains. Moreover, the approach relaxes the need for grid generation based on elliptic partial differential equation or grid smoothing by applying fixed point iterations (i. e. Gauss-Seidel) to initial grid node positions resulting from algebraic grid generators. Drawbacks of previous approaches which ignored treatment of finite volume grid cell cases with intersection point offset in non-orthogonality corrections are removed. Application to real-life wind farm project at Dobric (Svrljig, Serbia) is used to assess the effectiveness of the method. The results validate the view in which accurate discretization of governing equations play more important role than the choice of turbulence modeling closures.",
journal = "Thermal Science",
title = "New Non-Orthogonality Treatment for Atmospheric Boundary Layer Flow Simulation Above Highly Non-Uniform Terrains",
volume = "20",
pages = "S223-S233",
doi = "10.2298/TSCI151025197M"
}
Mirkov, N. S.,& Stevanović, Ž. M.. (2016). New Non-Orthogonality Treatment for Atmospheric Boundary Layer Flow Simulation Above Highly Non-Uniform Terrains. in Thermal Science, 20, S223-S233.
https://doi.org/10.2298/TSCI151025197M
Mirkov NS, Stevanović ŽM. New Non-Orthogonality Treatment for Atmospheric Boundary Layer Flow Simulation Above Highly Non-Uniform Terrains. in Thermal Science. 2016;20:S223-S233.
doi:10.2298/TSCI151025197M .
Mirkov, Nikola S., Stevanović, Žarko M., "New Non-Orthogonality Treatment for Atmospheric Boundary Layer Flow Simulation Above Highly Non-Uniform Terrains" in Thermal Science, 20 (2016):S223-S233,
https://doi.org/10.2298/TSCI151025197M . .
3
2

On the improved finite volume procedure for simulation of turbulent flows over real complex terrains

Mirkov, Nikola S.; Rasuo, Bosko; Kenjeres, Sasa

(2015)

TY  - JOUR
AU  - Mirkov, Nikola S.
AU  - Rasuo, Bosko
AU  - Kenjeres, Sasa
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/268
AB  - This article presents a new and substantially improved finite volume procedure for simulation of incompressible flows on non-orthogonal grids. Cell-centered least-squares gradients are obtained in a robust and highly accurate way. A new discretization of the diffusive terms is employed, which is based on extension of the original cell-face gradient interpolation and is more suitable for complex grid distortions. A flexible flux-limited interpolation of dependent variables on distorted computational grids is introduced. An efficient preconditioner for Krylov method solution of linear systems is proposed, which substantially improves the solution of Poisson equation for pressure correction. The pressure-correction algorithm is adapted for efficient convergence on highly complex grids using a sequence of non-orthogonal corrector solutions and its effect on iteration convergence is analyzed. The non-orthogonalities treated by current procedure are more accustomed to numerical grids generated from a real complex terrain elevation data. The main focus is on the simulation of atmospheric micro-scale flows pertinent to wind energy application.
T2  - Journal of Computational Physics
T1  - On the improved finite volume procedure for simulation of turbulent flows over real complex terrains
VL  - 287
SP  - 18
EP  - 45
DO  - 10.1016/j.jcp.2015.02.001
ER  - 
@article{
author = "Mirkov, Nikola S. and Rasuo, Bosko and Kenjeres, Sasa",
year = "2015",
abstract = "This article presents a new and substantially improved finite volume procedure for simulation of incompressible flows on non-orthogonal grids. Cell-centered least-squares gradients are obtained in a robust and highly accurate way. A new discretization of the diffusive terms is employed, which is based on extension of the original cell-face gradient interpolation and is more suitable for complex grid distortions. A flexible flux-limited interpolation of dependent variables on distorted computational grids is introduced. An efficient preconditioner for Krylov method solution of linear systems is proposed, which substantially improves the solution of Poisson equation for pressure correction. The pressure-correction algorithm is adapted for efficient convergence on highly complex grids using a sequence of non-orthogonal corrector solutions and its effect on iteration convergence is analyzed. The non-orthogonalities treated by current procedure are more accustomed to numerical grids generated from a real complex terrain elevation data. The main focus is on the simulation of atmospheric micro-scale flows pertinent to wind energy application.",
journal = "Journal of Computational Physics",
title = "On the improved finite volume procedure for simulation of turbulent flows over real complex terrains",
volume = "287",
pages = "18-45",
doi = "10.1016/j.jcp.2015.02.001"
}
Mirkov, N. S., Rasuo, B.,& Kenjeres, S.. (2015). On the improved finite volume procedure for simulation of turbulent flows over real complex terrains. in Journal of Computational Physics, 287, 18-45.
https://doi.org/10.1016/j.jcp.2015.02.001
Mirkov NS, Rasuo B, Kenjeres S. On the improved finite volume procedure for simulation of turbulent flows over real complex terrains. in Journal of Computational Physics. 2015;287:18-45.
doi:10.1016/j.jcp.2015.02.001 .
Mirkov, Nikola S., Rasuo, Bosko, Kenjeres, Sasa, "On the improved finite volume procedure for simulation of turbulent flows over real complex terrains" in Journal of Computational Physics, 287 (2015):18-45,
https://doi.org/10.1016/j.jcp.2015.02.001 . .
14
10
14

Numerical Simulation of Air Jet Attachment to ConvexWalls and Application to UAV

Mirkov, Nikola S.; Rasuo, Bosko

(2015)

TY  - CONF
AU  - Mirkov, Nikola S.
AU  - Rasuo, Bosko
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7144
AB  - In this paper, we present a numerical study of the wall jet flow over a convex surface, viz. the Coanda wall jet, and its application to a conceptual Unmanned Aerial Vehicle (UAV) design which uses the Coanda effect as a basis of lift production. This configuration is important in a way that it considers the Coanda wall jet over a smooth convex wall with non-constant curvature, in contrast to most of the previous situations where only constant curvature walls were considered e.g. the Coanda wall jet over circular cylinder. To enable the mathematical representation of this complex geometrical configuration, we propose a form of a parametric representation of the conceptual geometry, based on Bernstein polynomials, which is universal in character and spans a complete design space. It is shown how dynamically changing the flow picture enables smooth change of net forces on the body. Capability to control the direction of the net force is shown to be useful for maneuvering the UAV. All simulations are done using an open-source finite-volume computational fluid dynamics code based on Reynolds-averaged Navier-Stokes equations. Turbulence is accounted for using the k-omega Shear Stress Transport model.
C3  - Lecture Notes in Computational Science and Engineering
T1  - Numerical Simulation of Air Jet Attachment to ConvexWalls and Application to UAV
VL  - 108
SP  - 197
EP  - 207
DO  - 10.1007/978-3-319-25727-3_15
ER  - 
@conference{
author = "Mirkov, Nikola S. and Rasuo, Bosko",
year = "2015",
abstract = "In this paper, we present a numerical study of the wall jet flow over a convex surface, viz. the Coanda wall jet, and its application to a conceptual Unmanned Aerial Vehicle (UAV) design which uses the Coanda effect as a basis of lift production. This configuration is important in a way that it considers the Coanda wall jet over a smooth convex wall with non-constant curvature, in contrast to most of the previous situations where only constant curvature walls were considered e.g. the Coanda wall jet over circular cylinder. To enable the mathematical representation of this complex geometrical configuration, we propose a form of a parametric representation of the conceptual geometry, based on Bernstein polynomials, which is universal in character and spans a complete design space. It is shown how dynamically changing the flow picture enables smooth change of net forces on the body. Capability to control the direction of the net force is shown to be useful for maneuvering the UAV. All simulations are done using an open-source finite-volume computational fluid dynamics code based on Reynolds-averaged Navier-Stokes equations. Turbulence is accounted for using the k-omega Shear Stress Transport model.",
journal = "Lecture Notes in Computational Science and Engineering",
title = "Numerical Simulation of Air Jet Attachment to ConvexWalls and Application to UAV",
volume = "108",
pages = "197-207",
doi = "10.1007/978-3-319-25727-3_15"
}
Mirkov, N. S.,& Rasuo, B.. (2015). Numerical Simulation of Air Jet Attachment to ConvexWalls and Application to UAV. in Lecture Notes in Computational Science and Engineering, 108, 197-207.
https://doi.org/10.1007/978-3-319-25727-3_15
Mirkov NS, Rasuo B. Numerical Simulation of Air Jet Attachment to ConvexWalls and Application to UAV. in Lecture Notes in Computational Science and Engineering. 2015;108:197-207.
doi:10.1007/978-3-319-25727-3_15 .
Mirkov, Nikola S., Rasuo, Bosko, "Numerical Simulation of Air Jet Attachment to ConvexWalls and Application to UAV" in Lecture Notes in Computational Science and Engineering, 108 (2015):197-207,
https://doi.org/10.1007/978-3-319-25727-3_15 . .
11
6
8

Technical Analysis of Photovoltaic/Wind Systems with Hydrogen Storage

Bakić, Vukman; Pezo, Milada L.; Jovanović, Marina P.; Turanjanin, Valentina; Vučićević, Biljana S.; Mirkov, Nikola S.

(2012)

TY  - JOUR
AU  - Bakić, Vukman
AU  - Pezo, Milada L.
AU  - Jovanović, Marina P.
AU  - Turanjanin, Valentina
AU  - Vučićević, Biljana S.
AU  - Mirkov, Nikola S.
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5063
AB  - The technical analysis of a hybrid wind-photovoltaic energy system with hydrogen gas storage was studied. The market for the distributed power generation based on renewable energy is increasing, particularly for the standalone minigrid applications. The main design components of photovoltaic/wind hybrid system are the photovoltaic panels, the wind turbine and an alkaline electrolyzer with tank. The technical analysis is based on the transient system simulation program TRNSYS 16. The study is realized using the meteorological data for a Typical Metrological Year for region of Novi Sad, Belgrade cities, and Kopaonik national park in Serbia. The purpose of the study is to design a realistic energy system that maximizes the use of renewable energy and minimizes the use of fossil fuels. The reduction in the CO2 emissions is also analyzed in the paper.
T2  - Thermal Science
T1  - Technical Analysis of Photovoltaic/Wind Systems with Hydrogen Storage
VL  - 16
IS  - 3
SP  - 865
EP  - 875
DO  - 10.2298/TSCI120306132B
ER  - 
@article{
author = "Bakić, Vukman and Pezo, Milada L. and Jovanović, Marina P. and Turanjanin, Valentina and Vučićević, Biljana S. and Mirkov, Nikola S.",
year = "2012",
abstract = "The technical analysis of a hybrid wind-photovoltaic energy system with hydrogen gas storage was studied. The market for the distributed power generation based on renewable energy is increasing, particularly for the standalone minigrid applications. The main design components of photovoltaic/wind hybrid system are the photovoltaic panels, the wind turbine and an alkaline electrolyzer with tank. The technical analysis is based on the transient system simulation program TRNSYS 16. The study is realized using the meteorological data for a Typical Metrological Year for region of Novi Sad, Belgrade cities, and Kopaonik national park in Serbia. The purpose of the study is to design a realistic energy system that maximizes the use of renewable energy and minimizes the use of fossil fuels. The reduction in the CO2 emissions is also analyzed in the paper.",
journal = "Thermal Science",
title = "Technical Analysis of Photovoltaic/Wind Systems with Hydrogen Storage",
volume = "16",
number = "3",
pages = "865-875",
doi = "10.2298/TSCI120306132B"
}
Bakić, V., Pezo, M. L., Jovanović, M. P., Turanjanin, V., Vučićević, B. S.,& Mirkov, N. S.. (2012). Technical Analysis of Photovoltaic/Wind Systems with Hydrogen Storage. in Thermal Science, 16(3), 865-875.
https://doi.org/10.2298/TSCI120306132B
Bakić V, Pezo ML, Jovanović MP, Turanjanin V, Vučićević BS, Mirkov NS. Technical Analysis of Photovoltaic/Wind Systems with Hydrogen Storage. in Thermal Science. 2012;16(3):865-875.
doi:10.2298/TSCI120306132B .
Bakić, Vukman, Pezo, Milada L., Jovanović, Marina P., Turanjanin, Valentina, Vučićević, Biljana S., Mirkov, Nikola S., "Technical Analysis of Photovoltaic/Wind Systems with Hydrogen Storage" in Thermal Science, 16, no. 3 (2012):865-875,
https://doi.org/10.2298/TSCI120306132B . .
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Validation of Atmospheric Boundary Layer Turbulence Model By On-Site Measurements

Stevanović, Žarko M.; Mirkov, Nikola S.; Stevanović, Žana; Stojanović, Andrijana D.

(2010)

TY  - JOUR
AU  - Stevanović, Žarko M.
AU  - Mirkov, Nikola S.
AU  - Stevanović, Žana
AU  - Stojanović, Andrijana D.
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3986
AB  - Modeling atmosperic boundary layer with standard linear models does not sufficiently reproduce wind conditions in complex terrain, especially on leeward sides of terrain slopes More complex models. based on Reynolds averaged Navier-Stokes equations and two-equation kappa-epsilon turbulence models for neutral conditions in atmospheric boundary written in general curvilinear non-orthogonal co-ordinate system, have been evaluated In order to quantify the differences and level of accuracy of different turbulence models, investigation has been performed using standard kappa-epsilon model without additional production terms and kappa-epsilon turbulence models with modified set of model coefficients The sets of full conservation equations are numerically solved by computational fluid dynamics technique. Numerical calculations of turbulence models are compared to the reference experimental data of Askervein hill measurements
T2  - Thermal Science
T1  - Validation of Atmospheric Boundary Layer Turbulence Model By On-Site Measurements
VL  - 14
IS  - 1
SP  - 199
EP  - 207
DO  - 10.2298/TSCI1001199S
ER  - 
@article{
author = "Stevanović, Žarko M. and Mirkov, Nikola S. and Stevanović, Žana and Stojanović, Andrijana D.",
year = "2010",
abstract = "Modeling atmosperic boundary layer with standard linear models does not sufficiently reproduce wind conditions in complex terrain, especially on leeward sides of terrain slopes More complex models. based on Reynolds averaged Navier-Stokes equations and two-equation kappa-epsilon turbulence models for neutral conditions in atmospheric boundary written in general curvilinear non-orthogonal co-ordinate system, have been evaluated In order to quantify the differences and level of accuracy of different turbulence models, investigation has been performed using standard kappa-epsilon model without additional production terms and kappa-epsilon turbulence models with modified set of model coefficients The sets of full conservation equations are numerically solved by computational fluid dynamics technique. Numerical calculations of turbulence models are compared to the reference experimental data of Askervein hill measurements",
journal = "Thermal Science",
title = "Validation of Atmospheric Boundary Layer Turbulence Model By On-Site Measurements",
volume = "14",
number = "1",
pages = "199-207",
doi = "10.2298/TSCI1001199S"
}
Stevanović, Ž. M., Mirkov, N. S., Stevanović, Ž.,& Stojanović, A. D.. (2010). Validation of Atmospheric Boundary Layer Turbulence Model By On-Site Measurements. in Thermal Science, 14(1), 199-207.
https://doi.org/10.2298/TSCI1001199S
Stevanović ŽM, Mirkov NS, Stevanović Ž, Stojanović AD. Validation of Atmospheric Boundary Layer Turbulence Model By On-Site Measurements. in Thermal Science. 2010;14(1):199-207.
doi:10.2298/TSCI1001199S .
Stevanović, Žarko M., Mirkov, Nikola S., Stevanović, Žana, Stojanović, Andrijana D., "Validation of Atmospheric Boundary Layer Turbulence Model By On-Site Measurements" in Thermal Science, 14, no. 1 (2010):199-207,
https://doi.org/10.2298/TSCI1001199S . .
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