DYNAMICS OF LOCALIZED TRAVELING WAVE CONVECTION IN BINARY FLUID MIXTURE

被引:1
|
作者
Ning Li-zhongDepartment of Applied Physics
机构
关键词
convection; localized traveling wave; binary fluid mixture; simulation; nonlinear;
D O I
暂无
中图分类号
O359 [多相流];
学科分类号
080704 ;
摘要
The dynamical behavior of a localized traveling wave (LTW) in a binary fluid layer heated from below confined in a rectangular cell with the intermediate aspect ratio г=12 and the separation ratio φ=-0.11 is studied by using the two-dimensional numerical simulation of the full hydrodynamic equations. We find that a counterpropa gating wave (CPW) occurs at the onset of convection and is modulated in space-time. The modulated traveling wave (MTW) plays an important role in the transition to the LTW state, and the LTW state depends on the fluid parameters and exists in a narrow interval of the reduced Rayleigb number. The transition from LTW to an extended traveling wave (ETW) or stationary overturning convection (SOC) state occurs when r exceeds a certain critical value. Our results agree with those observed in experiments.
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收藏
页码:29 / 39
页数:11
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