明渠断面流速分布的信息熵理论分析  

Application of Information Entropy Theory To Study of Velocity Distribution In Open Channel Cross Sections

作　　者：王木兰[1] 朱克纯[1] 张芹芬[1] 朱党生[1] 

机构地区：[1]河海大学水工所水工水力学中心

出　　处：《水动力学研究与进展（A辑）》1994年第3期276-283,共8页Chinese Journal of Hydrodynamics

摘　　要：本文介绍了应用信息熵理论研究明渠水力学问题的新概念，借助最大熵原理导得了非宽浅明渠断面流速分布的计算公式及其有关参数，计算结果与试验水槽中毕托管激光测速资料及现场测速资料吻合较好。Based on the assumption that the longitudinal velocity u and dimensionness isovel pethenζin a cross section of an open channel are random variables, the probability distribution functions p(u) ac P(ζ) are presented by use of the maximum entropy principle, and a mathematical and its algorism for the velocity distribution calculation are developed in this paper. The concerned parameter estimation has made on the basis of velocity data measured by a Laser-Doppler current meter in a laboratory flume. The model and algorism here applied to a sediment laden channel, the reproduce results are in fair agreement with the field measurement data, which shows an encouraging perspective in their practical use.

关 键 词：信息熵理论 明渠断面 流速分布函数 水力学 

分 类 号：TV133[水利工程—水力学及河流动力学]