沙波波高随水流强度变化规律的探讨  

Research on variation law of wave height based on current intension

作　　者：詹义正[1] 余明辉[1] 邓金运[1] 陆晶[1] 黄良文[1] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072

出　　处：《武汉大学学报（工学版）》2006年第6期10-13,共4页Engineering Journal of Wuhan University

基　　金：国家自然科学资金资助项目(50679065)

摘　　要：基于河床与水流交互作用过程是一个动力学变化过程的事实,从微动量变化对比分析入手,建立了临界动量方程,从理论上探讨了沙波波高与相对水流强度间的函数关系.计算分析表明,公式所能描述的规律与室内外资料完全一致,能较好地反映沙波发生、发展以及消亡的全部变化过程.具有理论和实用价值.Based on the fact that the river interaction between the river bed and the flow is a dynamic process, the functional relation between the wave height of river bed ripple and the corresponding flow intensity is developed considering the micro-momentum change of the hydraulic and sediment factors and building the critical momentum equation. It is shown that the formula presented can affect the ripple change process of inception, development and disappearance; and the laws described are consistent with the field data so as to offer references in the theoretical study and practice.

关 键 词：沙波运动 临界动量方程 河床形态 河床演变 推移质运动 

分 类 号：TV142.4[水利工程—水力学及河流动力学]