Traveling wave convection in binary fluid mixtures with lateral flow
Traveling wave convection in binary fluid mixtures with lateral flow
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具有横向流动的二元流体混合物中的行波对流
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
Zhao Bing
中科院分区：
文献类型：
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作者：
Zhao Bing
基于流体动力学摄动方程的高精度差分方法，数值研究了在小正分离比下，物理参数对Poiseuille-Rayleigh-Benard流动的影响.以温度摄动为初始扰动源，流动系统的整个时空演化经历了初始力矩、线性波指数增长和非线性演化三个阶段.然后经过非线性演化演化为周期行波状态.最后讨论了雷诺效应和Rayleigh效应对时空演化过程的影响.
Based on a high-accuracy difference approach proposed for the hydrodynamic perturbation equations,this paper studies numerically the influence of physical parameters on Poiseuille-Rayleigh-Benard flows in binary fluids with Soret effect at a small positive separation ratio.With a temperature perturbation as an initial disturbing source,the whole spatio-temporal evolution of the flow system undergoes three stages: initial moment,linear wave exponential growth and nonlinear evolution.And then after a nonlinear evolution transition,the flow system evolves into a periodic traveling wave state.The Reynolds and Rayleigh effects on the course of spatio-temporal evolution are discussed in the end.