ON FALLING-FILM INSTABILITIES AND WAVE BREAKING

被引：23

作者：

JOO, SW ^{[1
]}

DAVIS, SH ^{[1
]}

BANKOFF, SG ^{[1
]}

机构：

[1] NORTHWESTERN UNIV,DEPT CHEM ENGN,EVANSTON,IL 60208

来源：

PHYSICS OF FLUIDS A-FLUID DYNAMICS | 1991年 / 3卷 / 01期

关键词：

D O I：

10.1063/1.857858

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Long-wave instabilities of thin viscous films flowing down inclined planes are studied. Numerical solutions of the full long-wave evolution equation show that wave profiles grow superexponentially and evolve toward breaking when the surface tension takes on realistically small values. This contrasts with the solutions of the Kuramoto-Sivashinsky equation, which do not tend toward breaking. The use of the full equation thus dispenses with the need to introduce the formally small curvature terms into the Kuramoto-Sivashinsky equation, as suggested by Rosenau and Oron [Phys. Fluids A 1, 1763 (1989)].

引用

页码：231 / 232

页数：2

共 10 条

[1]

Atherton R., 1976, CHEM ENG COMMUN, V2, P57

[2] WAVE FORMATION IN LAMINAR FLOW DOWN AN INCLINED PLANE [J].