物理学报Issue(8)：085203-1-085203-9,9.DOI:10.7498/aps.63.085203
黏性、表面张力和磁场对Rayleigh-Taylor不稳定性气泡演化影响的理论分析
Theoretical analysis of effects of viscosity, surface tension, and magnetic field on the bubble evolution of Rayleigh-Taylor instability
李源 1罗喜胜1
作者信息
- 1. 中国科学技术大学近代力学系，先进推进实验室，合肥 230026
- 折叠
摘要
Abstract
The evolution of bubble in Rayleigh-Taylor (RT) instability for non-ideal hydromagnetic fluid is investigated the-oretically in this study. In a plane perpendicular to the magnetic field, the general governing equation describing the bubble evolution is derived by considering the influences of viscousity, surface tension and magnetic field. The numer-ical and asymptotic solutions of the bubble velocity in two-dimensional planar geometry are obtained under different conditions and the effects of fluid viscosity, surface tension and magnetic field on the bubble growth are then analyzed in detail. It is found that the bubble velocity is reduced by viscosity and surface tension, which indicates that viscosity and surface tension can suppress the RT instability. It is also observed that the influence of magnetic field on the RT instability is caused by its nonlinear part, and whether the RT instability can be suppressed or enhanced depends on the direction of the nonlinear part of magnetic field.关键词
Rayleigh-Taylor不稳定性/黏性/表面张力/磁场Key words
Rayleigh-Taylor instability/viscosity/surface tension/magnetic field引用本文复制引用
李源,罗喜胜..黏性、表面张力和磁场对Rayleigh-Taylor不稳定性气泡演化影响的理论分析[J].物理学报,2014,(8):085203-1-085203-9,9.
