Influence of wind drag coefficient on wind-drived flow simulation
Influence of wind drag coefficient on wind-drived flow simulation
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发表时间：
2009
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通讯作者：
W. Ling-ling
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作者：
W. Ling-ling
风应力在风动流的形成中起着重要的作用。本文通过风致流动的数值模拟，验证了几种已提出的阻力系数随风速变化的公式。将变阻力系数模型应用于明渠和太湖风致水流的模拟，结果与明渠理论解和太湖实测资料吻合较好。当采用Large和Pond提出的公式时，结果最好。
Wind stress plays an important role in the formation of wind-drived flow. In this paper, several proposed formulae of the drag coefficient varying with the wind speed were examined with numerical simulations of wind-drived flow. When the model with varying drag coefficients was applied in two cases,such as the wind-drived flow simulation in open channel and Taihu Lake, the results coincide much better with the theoretical solutions in open channel and the observed data in Taihu Lake than those with the constant drag coefficients. The best result was obtained when the formula proposed by Large and Pond was adopted.