Large-eddy simulation and wind tunnel study of flow over an up-hill slope in a complex terrain

2009 ◽  
Vol 12 (3) ◽  
pp. 219-237 ◽  
Author(s):  
C.F. Tsang ◽  
Kenny C.S. Kwok ◽  
Peter A. Hitchcock ◽  
Desmond K.K. Hui
Keyword(s):  
Wind Tunnel ◽  
Large Eddy Simulation ◽  
Complex Terrain ◽  
Eddy Simulation ◽  
Hill Slope ◽  
Large Eddy ◽  
Wind Tunnel Study

scholarly journals On the self-similarity of wind turbine wakes in complex terrain using large-eddy simulation

2019 ◽  
Author(s):  
Arslan Salim Dar ◽  
Jacob Berg ◽  
Niels Troldborg ◽  
Edward G. Patton
Keyword(s):  
Large Eddy Simulation ◽  
Complex Terrain ◽  
The Self ◽  
Self Similarity ◽  
Flat Terrain ◽  
Eddy Simulation ◽  
Atmospheric Stratification ◽  
Large Eddy ◽  
Self Similar ◽  
Turbine Wake

Abstract. We perform large-eddy simulation of flow in complex terrain under neutral atmospheric stratification. We study the self-similar behavior of a turbine wake as a function of varying terrain complexity and perform comparison with a flat terrain. By plotting normalized velocity deficit profiles in different complex terrain cases, we verify that self-similarity is preserved as we move downstream from the turbine. We find that this preservation is valid for a shorter distance downstream compared to what is observed in flat terrain. A larger spread of the profiles toward the tails due to varying levels of shear is also observed.

Large Eddy Simulation of Wind Loads on a Low-Rise Structure and Comparison with Wind Tunnel Results

2012 ◽  
Vol 152-154 ◽  
pp. 1806-1813 ◽  
Author(s):  
Isam Janajreh ◽  
Simiu Emil
Keyword(s):  
Wind Tunnel ◽  
Large Eddy Simulation ◽  
Pressure Coefficients ◽  
Eddy Simulation ◽  
Gable Roof ◽  
Second Moments ◽  
Large Eddy ◽  
Wind Tunnel Measurements ◽  
Time Histories ◽  
The University

This work presents estimates of time histories of pressure coefficients at several taps on the roof of a 1/200 model of a 200 x 100 x 20 ft low-rise building with a 1/24 slope gable roof building. The estimates were obtained by large eddy simulation (LES). The first and second moments as well as peaks for the time histories are compared with those obtained in boundary layer wind-tunnel measurements at the University of Western Ontario. It is noted that the computation times required to obtain records of length comparable to wind tunnel records are at present prohibitively large.

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