泥沙实体模型时间变态问题的研究  

Study on time scale distortion problem in sediment model test

作　　者：渠庚[1] 郭熙灵[2] 龙超平[2] 孙贵洲[1] 

机构地区：[1]长江科学院河流研究所,湖北武汉430010 [2]长江科学院,湖北武汉430010

出　　处：《水利学报》2007年第11期1318-1323,共6页Journal of Hydraulic Engineering

摘　　要：运用数学模型对陈家湾～新厂河段实体模型进行数值模拟，采用该河段2002年10月-2004年7月实测水沙资料，对实体模型时间变态有关问题进行了系列研究。分别采用容重为1．38t／m^3及1．15t／m^3模型沙比较了沿程水位、流量、流速、含沙量等基本参数的变化过程与原型的偏差，以及由此引起模型河道冲淤量与原型河道的偏差，并对这些物理量偏差的原因进行探讨。The mathematical modeling is applied to investigate the influence of time scale distortion on sediment physical model test result. The mathematical model developed by the author is calibrated by the observation data of the fiver section to be studied in physical model. Thus, the variation of water level, discharge, flow velocity and sediment concentration at different cross sections of the fiver for two kinds of light sediment for model test which may induce the time scale distortion are calculated and compared with the calculation result of the model using prototype sediment which is the virtue situation may happen to prototype. The differences of the silting of these calculation results are analyzed and the influence of the time scale distortion are discussed.

关 键 词：时间变态 实体模型 数学模型 上荆江 

分 类 号：TV149[水利工程—水力学及河流动力学]