Experimental validation of wind energy estimation
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Wind power assessment in complex terrain is a very demanding task. Modeling wind conditions with standard linear models does not sufficiently reproduce wind conditions in complex terrains, especially on leeward sides of terrain slopes, primarily due to the vorticity. A more complex non-linear model, based on Reynolds averaged Navier-Stokes equations has been used. Turbulence was modeled by modified two-equations k-? model for neutral atmospheric boundary-layer conditions, written in general curvelinear non-orthogonal co-ordinate system. The full set of mass and momentum conservation equations as well as turbulence model equations are numerically solved, using the as CFD technique. A comparison of the application of linear model and non-linear model is presented. Considerable discrepancies of estimated wind speed have been obtained using linear and non-linear models. Statistics of annual electricity production vary up to 30% of the model site. Even anemometer measurements directly at a ...wind turbine?s site do not necessarily deliver the results needed for prediction calculations, as extrapolations of wind speed to hub height is tricky. The results of the simulation are compared by means of the turbine type, quality and quantity of the wind data and capacity factor. Finally, the comparison of the estimated results with the measured data at 10, 30, and 50 m is shown.
Кључне речи:
wind turbine / modeling / CFD / combined methodology / measurementИзвор:
Thermal Science, 2020, 24, 6 Part A, 3795-3806Финансирање / пројекти:
- Развој новог метеоролошког мерног стуба за карактеризацију турбулентних параметара ветра (RS-MESTD-Technological Development (TD or TR)-33036)
DOI: 10.2298/TSCI191207474Z
ISSN: 0354-9836
WoS: 000617150700034
Scopus: 2-s2.0-85098877454
Институција/група
VinčaTY - JOUR AU - Živković, Predrag AU - Tomić, Mladen AU - Bakić, Vukman PY - 2020 UR - https://vinar.vin.bg.ac.rs/handle/123456789/9183 AB - Wind power assessment in complex terrain is a very demanding task. Modeling wind conditions with standard linear models does not sufficiently reproduce wind conditions in complex terrains, especially on leeward sides of terrain slopes, primarily due to the vorticity. A more complex non-linear model, based on Reynolds averaged Navier-Stokes equations has been used. Turbulence was modeled by modified two-equations k-? model for neutral atmospheric boundary-layer conditions, written in general curvelinear non-orthogonal co-ordinate system. The full set of mass and momentum conservation equations as well as turbulence model equations are numerically solved, using the as CFD technique. A comparison of the application of linear model and non-linear model is presented. Considerable discrepancies of estimated wind speed have been obtained using linear and non-linear models. Statistics of annual electricity production vary up to 30% of the model site. Even anemometer measurements directly at a wind turbine?s site do not necessarily deliver the results needed for prediction calculations, as extrapolations of wind speed to hub height is tricky. The results of the simulation are compared by means of the turbine type, quality and quantity of the wind data and capacity factor. Finally, the comparison of the estimated results with the measured data at 10, 30, and 50 m is shown. T2 - Thermal Science T1 - Experimental validation of wind energy estimation VL - 24 IS - 6 Part A SP - 3795 EP - 3806 DO - 10.2298/TSCI191207474Z ER -
@article{ author = "Živković, Predrag and Tomić, Mladen and Bakić, Vukman", year = "2020", abstract = "Wind power assessment in complex terrain is a very demanding task. Modeling wind conditions with standard linear models does not sufficiently reproduce wind conditions in complex terrains, especially on leeward sides of terrain slopes, primarily due to the vorticity. A more complex non-linear model, based on Reynolds averaged Navier-Stokes equations has been used. Turbulence was modeled by modified two-equations k-? model for neutral atmospheric boundary-layer conditions, written in general curvelinear non-orthogonal co-ordinate system. The full set of mass and momentum conservation equations as well as turbulence model equations are numerically solved, using the as CFD technique. A comparison of the application of linear model and non-linear model is presented. Considerable discrepancies of estimated wind speed have been obtained using linear and non-linear models. Statistics of annual electricity production vary up to 30% of the model site. Even anemometer measurements directly at a wind turbine?s site do not necessarily deliver the results needed for prediction calculations, as extrapolations of wind speed to hub height is tricky. The results of the simulation are compared by means of the turbine type, quality and quantity of the wind data and capacity factor. Finally, the comparison of the estimated results with the measured data at 10, 30, and 50 m is shown.", journal = "Thermal Science", title = "Experimental validation of wind energy estimation", volume = "24", number = "6 Part A", pages = "3795-3806", doi = "10.2298/TSCI191207474Z" }
Živković, P., Tomić, M.,& Bakić, V.. (2020). Experimental validation of wind energy estimation. in Thermal Science, 24(6 Part A), 3795-3806. https://doi.org/10.2298/TSCI191207474Z
Živković P, Tomić M, Bakić V. Experimental validation of wind energy estimation. in Thermal Science. 2020;24(6 Part A):3795-3806. doi:10.2298/TSCI191207474Z .
Živković, Predrag, Tomić, Mladen, Bakić, Vukman, "Experimental validation of wind energy estimation" in Thermal Science, 24, no. 6 Part A (2020):3795-3806, https://doi.org/10.2298/TSCI191207474Z . .