根据计算污染场的实际需要，建立了一种适体坐标下深度平均的ｋε模型，并用它计算了汉江仙桃段的流场，取得了与实测值基本一致的计算结果． According to the actual need of calculating the contaminated field, a kε model of depth average under the apical coordinate was established, and the flow field of Xiantao section of Hanjiang River was calculated. The calculated results are basically consistent with the measured values.