液膜体積比に依存した液膜マランゴニ対流の数値解析

抄録

A thermo-capillary flow in a rectangular liquid film which has two free surfaces was studied by means of a numerical simulation. In order to consider the surface deformation, we simulated the gas-liquid two-phase flow, allowing to determine the change of flow pattern with a varying volume ratio. Through the present two-phase flow simulations, we confirmed two patterns of the basic flow in the thin liquid film: one was double-layered, and the other was single-layered flow. The selection of the basic flow depends on the initial thickness of the liquid film. In the case of a thin liquid film accompanied by a single-layered flow, when the volume ratio of the liquid film was less than unity, a similar flow occurred in the liquid film. However, when the volume ratio was more than unity, the flow direction of the single-layered flow reversed.