Large-Eddy Simulation and Wind Tunnel Experiment of Airflow over Bolund Hill

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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Large eddy simulation of the wind turbine wake characteristics in the numerical wind tunnel model

Journal of Wind Engineering and Industrial Aerodynamics ◽

10.1016/j.jweia.2012.09.002 ◽

2013 ◽

Vol 112 ◽

pp. 11-24 ◽

Cited By ~ 68

Author(s):

Jang-Oh Mo ◽

Amanullah Choudhry ◽

Maziar Arjomandi ◽

Young-Ho Lee

Keyword(s):

Wind Tunnel ◽

Large Eddy Simulation ◽

Wind Turbine ◽

Wind Tunnel Model ◽

Eddy Simulation ◽

Tunnel Model ◽

Large Eddy ◽

Turbine Wake ◽

Wake Characteristics ◽

Wind Turbine Wake

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Large Eddy Simulation of Wind Flow Over Complex Terrain: The Bolund Hill Case

35th Wind Energy Symposium ◽

10.2514/6.2017-1160 ◽

2017 ◽

Cited By ~ 2

Author(s):

Rajib Roy ◽

Michael K. Stoellinger

Keyword(s):

Large Eddy Simulation ◽

Complex Terrain ◽

Wind Flow ◽

Eddy Simulation ◽

Large Eddy ◽

Bolund Hill

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Large Eddy Simulation of Turbulent Air Flow Over a Surface Mounted Hemisphere

ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting: Volume 1, Symposia – Parts A, B, and C ◽

10.1115/fedsm-icnmm2010-30742 ◽

2010 ◽

Cited By ~ 1

Author(s):

M. M. Tavakol ◽

O. Abouali ◽

M. Yaghoubi

Keyword(s):

Experimental Data ◽

Wind Tunnel ◽

Large Eddy Simulation ◽

Separation Bubble ◽

Air Flow ◽

Eddy Simulation ◽

Large Eddy ◽

Wind Tunnel Measurements ◽

Turbulent Air Flow ◽

Complex Features

Turbulent air flow around a surface mounted hemisphere is investigated numerically. The flow field has been simulated using Large Eddy Simulation (LES) technique. Using LES results, variations of flow velocity at various sections along the midplane are presented and compared with the wind tunnel measurements. Also the results of LES are compared with a RANS model (k-ε RNG). It is concluded that LES with the proper grid resolution is capable to capture the complex features of the flow especially in the separation bubble formed behind the hemisphere. The LES results are in a better agreement with experimental data compared with k-ε RNG model. Also various SGS models for LES technique are tested and the predictions of these models are compared.

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