An Application of VLES Turbulent Flow Simulation Methodology to Flow over Smooth Hills
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© Springer Nature Switzerland AG 2020
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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.
Кључне речи:
Hybrid RANS/LES / Numerical simulation / Turbulence model validation / Turbulent flows / Very Large Eddy SimulationИзвор:
Lecture Notes in Networks and Systems, 2020, 90, 288-304Финансирање / пројекти:
- Развој новог метеоролошког мерног стуба за карактеризацију турбулентних параметара ветра (RS-MESTD-Technological Development (TD or TR)-33036)
Напомена:
- In: Mitrovic N., Milosevic M., Mladenovic G. (eds) Computational and Experimental Approaches in Materials Science and Engineering. CNNTech 2018. Lecture Notes in Networks and Systems, vol 90. Springer, Cham
DOI: 10.1007/978-3-030-30853-7_17
ISSN: 2367-3370
WoS: 000613139400017
Scopus: 2-s2.0-85073232116
Институција/група
VinčaTY - 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 . .