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It is highly important in Japan to choose a good site for wind turbines, because the spatial distribution of wind speed is quite complicated over steep complex terrain. We have been developing the uns...teady CFD code called the RIAM-COMPACT ○!R. The RIAM-COMPACT ○!R is based on LES turbulence model. In this paper, to test the accuracy of the RIAM-COMPACT ○!R, we have performed a numerical simulation of a non-stratified airflow past a three-dimensional hill in a uniform flow. Attention is focused on airflow characteristics in the wake region. Through comparison of the commercial CFD software (STAR-CCM+), the results from the RIAM-COMPACT ○!R are in good agreement with those obtained from STAR-CCM+.show more
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