不冲不淤输水渠道优化设计方法研究

An Optimum Design Method of the Regime Channel

本文根据最小能耗率原理,以水流能耗率极小化作为目标函数,以渠道不冲不淤流速作为约束条件,建立了不冲不淤输水渠道优化设计数学模型,求解渠道底宽、水深、比降的优化值及相应流速。最后用渠道实测资料对该优化模型进了检验,结果表明,优化计算值与实测值吻合较好。

In this paper an optimum design mathematical model of the regime channel is developed, based on the theory of minimum rate of energy dissipation. The rate of energy dissipation is used as the objective function, and the noneroding velocity and the non-silting velocity of the channel are the constraints. The bottom width, flow depth, slope, and flow velocity of the channel are obtained. Finally, the model has been verified by the field data of channel, and satisfactory results are obtained.