2-PHASE FLOW-ANALYSIS OF SELF-SIMILAR TURBULENT MIXING BY RAYLEIGH-TAYLOR INSTABILITY

被引：54

作者：

FREED, N ^{[1
]}

OFER, D ^{[1
]}

SHVARTS, D ^{[1
]}

ORSZAG, SA ^{[1
]}

机构：

[1] PRINCETON UNIV,PRINCETON,NJ 08544

来源：

PHYSICS OF FLUIDS A-FLUID DYNAMICS | 1991年 / 3卷 / 05期

关键词：

D O I：

10.1063/1.857967

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The evolution of a randomly perturbed interface between unbounded incompressible fluids undergoing Rayleigh-Taylor instability is analyzed numerically and theoretically. Two-dimensional simulation results, obtained with an interface tracking code, are presented and compared with a theoretical model based on Young's two-phase flow description of the mixing process. The simplifications implied by self-similarity and by high drag enable simple analytic results to be obtained for the profiles of the average volume fractions and velocities of the two materials as a function of penetration depth. Agreement of the analytic results with the simulation data is demonstrated for a wide range of density ratios.

引用

页码：912 / 918

页数：7

共 15 条

[1] RAYLEIGH-TAYLOR INSTABILITY OF FLUID LAYERS [J].