POTENTIAL ENERGY MODEL FOR TURBULENT ENTRAINMENT ACROSS DENSITY INTERFACE IN A LINEARLY STRATIFIED FLUID  

作　　者：鄂学全 王薇 

机构地区：[1]Institute of Mechanics, Academia Sinica, Beijing 100080, PRC

出　　处：《Science China Mathematics》1992年第12期1475-1485,共11页中国科学：数学（英文版）

摘　　要：A potontial energy medel is developed for turbulent entrainment in the absence of mean shear in a linearly stratified fluid. The relation between the entrainment distanee D and the time t and the relation between dimensionless entrainment rate E and the local Richardson number are obtained. An experiment is made for examination. The experimental results are in good agreement with the medel, in which the dimensionless entrainment distance D is given by where A_i is the proportional coefficient, S is the dimensionless stroke, is thc dimensionless frequency of the grid oscillation, the dimensionless time.A potontial energy medel is developed for turbulent entrainment in the absence of mean shear in a linearly stratified fluid. The relation between the entrainment distanee D and the time t and the relation between dimensionless entrainment rate E and the local Richardson number are obtained. An experiment is made for examination. The experimental results are in good agreement with the medel, in which the dimensionless entrainment distance D is given by where A_i is the proportional coefficient, S is the dimensionless stroke, is thc dimensionless frequency of the grid oscillation, the dimensionless time.

关 键 词：TURBULENT ENTRAINMENT LINEARLY STRATIFIED fluid. 

分 类 号：N[自然科学总论]