DISCONTINUOUS FLOW OF TURBID DENSITY CURRENTS I. CHANNEL EXPANSION AND CONTRACTION  

作　　者：JiahuaFAN 

机构地区：[1]Prof.,Sr.Engr.,ChinaInst.ofWaterResourcesandHydropowerRes.,P.O.Box366,Beijing,China

出　　处：《International Journal of Sediment Research》2005年第1期68-77,共10页国际泥沙研究（英文版）

摘　　要：Laboratory experiments on turbid density currents were conducted to observe the flow features of these currents with abrupt contracted and expanded reaches. Experimental data were used to determine water entrainment coefficients for both channel expansion and contraction. Expressions for turbid density currents with water entrainment coefficients in abrupt contracted and expanded reaches were derived, and compared with experimental data.Laboratory experiments on turbid density currents were conducted to observe the flow features of these currents with abrupt contracted and expanded reaches. Experimental data were used to determine water entrainment coefficients for both channel expansion and contraction. Expressions for turbid density currents with water entrainment coefficients in abrupt contracted and expanded reaches were derived, and compared with experimental data.

关 键 词：Density current Turbidity current Discontinuous flow Stratified flow Flow  contraction Flow expansion Internal hydraulic jump Water entrainment 

分 类 号：TV139.2[水利工程—水力学及河流动力学] O351.2[理学—流体力学]