伴有局部掺混的异重流水跃  

Density current hydraulic jumps with local entrainment

作　　者：范家骅[1] 

机构地区：[1]中国水利水电科学研究院,北京100044

出　　处：《水利学报》2005年第2期135-140,共6页Journal of Hydraulic Engineering

摘　　要：为了分析伴有局部水体掺混的异重流内部水跃上下游水力因子之间的关系,本文利用动量方程和连续方程推导了包含上下层流体之间水量掺混的内部水跃的理论表达式,并用水槽试验对该理论公式进行了验证。结果表明无论对稳定内部水跃还是移动内部水跃计算所得的水量掺混系数均比试验值约小10%,初步验证了本文所提出的理论计算方法。Local entrainment may occur in internal hydraulic jump of density flow. The momentum and continuity equations were used to deduce the theoretical formula of the hydraulic jump. The validity of the formula is verified by the experimental data obtained from model test in flume. The water entrainment coefficients calculated from theoretical formula both for stable hydraulic jump and movable hydraulic jump in density flow are less than the experimental values by 10%.

关 键 词：浑水异重流 非连续流 局部掺混 内部水跃 

分 类 号：TV145.2[水利工程—水力学及河流动力学]