【摘要】 本文对异重流潜入机理进行了分析，表明潜入过程中流速分布的根本变化对潜入的作用是研究异重流潜入条件的核心．文中提出了异重流潜入模型，引入了潜入动量修正系数，得到异重流潜入点处修正佛汝德数与水槽底坡、异重流阻力系数、水槽宽度、单宽流量及含沙量的定量关系．用本文及范家骅等的两种试验条件相差较大的潜入试验资料对模型分析和验证，表明计算值与实测值相吻合．更多还原

【Abstract】 The plunging model of density current established in the paper introduces the modified plunging momentum coefficient,ε,and gives the quantitative relationship at plunging point between densimetric Froude number and the essentially independent parameters such as bed slope, the drag coefficient of density currents, width of channels, discharge rate of unit width, and sediment concentration. The calculated results agree well in many cases with the laboratory data.更多还原