基于积分法的热非平衡效应下剪切液膜流的表面波演化模型

当液膜表面同时存在热非平衡效应和切应力作用时,引发液膜流动不稳定的扰动及其影响将更为复杂。基于边界层理论,通过建立气液界面受热非平衡效应和切应力耦合作用的液膜流动的理论模型,采用包含弱非线性项的积分法,推导出热非平衡效应下剪切液膜流的表面波积分演化模型,模型中包括了相变强度、切应力、雷诺数和倾斜角度等不同参数的影响,为分析复杂边界条件下的液膜流的演化特征和稳定性提供了一种可借鉴的理论模型。

Evolution model of surface waves of shear liquid films under thermal non-equilibrium effect based on integral method

The perturbation factors and their effect on flow stability tend to be complicated when the liquid films is under the effect of thermal non - equilibrium and shear stress at the interfaces.The theoretical model of sheared liquid films under the thermal non - equilibrium effect was formulated based on the boundary theory.With the integral method including the weakly nonlinear items in boundary model,the integral evolution equation of surface waves was established in present paper,which including the effect of phase change intensity,hear stress,Reynolds number and inclined angle.The present model provides a theoretical method for better understanding for evolution behavior and flow stability under complex boundary conditions.