热毛细效应对粘性液环演化的影响和机理研究

Liquid ring, as a sort of stream of matter with free surface, frequently appears in nature and some industrial processes. Accordingly, theoretical understanding on its evolution by considering its own configuration feature is of vital importance, since many physical phenomena are hereby able to be explained. In addition, some basic idea for industrial application could also be founded for the sake of resource economy, efficiency improvement, environment protection and etc. So far, the study on liquid ring is just starting, so the present project is expectable to make valuable progress for relevant theoretical work. The proposer plans to characterize the evolution of perturbations on a liquid ring in their linear, weakly nonlinear and strongly nonlinear stages, with the help of analytical methods, perturbation theory, similarity analysis and directly numerical simulations. The effects of viscosity and external thermal field, which induces thermocapillary effect that would influence the system, are the major topics of discussion. By revealing the physical mechanism, some valuable reference for future application would be available.

液环，作为具有自由界面的物质流系统，在自然界和工业过程中广泛存在，故而结合液环自身形态特征研究其演化过程具有重要的科学意义和应用价值。它不仅可以帮助人们解释自然界中诸多物理现象，还可以为工业应用提供理论依据，以实现节约资源、提高生产效率、保护环境等目的。针对液环演化过程的研究在当前流体力学界尚属起步阶段，故本项目的顺利开展可以填补相关理论分析工作的空白。申请人将采用解析、摄动理论、相似分析和直接数值模拟等方法研究液环所受扰动的线性、弱非线性和强非线性阶段的演化特征。其中，申请人将重点讨论液体粘性和由环境温度场所引发的热毛细效应的影响，并通过对其机理的解释为相关工业设计提供有价值的参考。

液环，作为具有自由界面的物质流系统，在自然界和工业过程中广泛存在，故而结合液环自身形态特征研究其演化过程具有重要的科学意义和应用价值。它不仅可以帮助人们解释自然界中诸多物理现象，还可以为工业应用提供理论依据，以实现节约资源、提高生产效率、保护环境等目的。针对液环演化过程的研究在当前流体力学界尚属起步阶段，故本项目的顺利开展可以填补相关理论分析工作的空白。申请人将采用解析、摄动理论、相似分析和直接数值模拟等方法研究液环所受扰动的线性、弱非线性和强非线性阶段的演化特征。其中，申请人将重点讨论液体粘性和由环境温度场所引发的热毛细效应的影响，并通过对其机理的解释为相关工业设计提供有价值的参考。