Numerical Simulation of a Contaminated Water Drop Sinking in a Oil by a Front-tracking Method

スポンサーリンク

概要

• 論文の詳細を見る

• In this study, a front-tracking (FT) method combined with a solver for the interfacial transport of surfactant is proposed to analyze interfacial flows affected by contamination. Because the interfaces are expressed explicitly in the FT method, the advection-diffusion equation on the interface can be treated easily and can be solved with high accuracy. In this study, a scheme that completely conserves the total amount of surfactant was constructed. Numerical simulations of a water drop sinking in silicone oil were performed, taking into account the Marangoni effect caused by concentrations. The effects of three parameters—a damping coefficient of interfacial tension, a diffusion coefficient, and the total amount of surfactant—were evaluated. Calculated results were compared with experimental results and were in very good agreement with variables including the stagnant cap size, the flow separation point, and the peak of shear stress. We can therefore expect that our simulations can estimate the conditions of surfactant at the interfaces.

• 一般社団法人 日本機械学会の論文

著者

• Uemura Tomomasa

  Department Of Mechanical Engineering Kansai University

• Yamamoto Yasufumi

  Department Of Mechanical Engineering Kansai University

• YAMAUCHI Makoto

  Osaka Prefectural College of Technology

関連論文

• An Air Cavity Formed Behind a Poorly Wetted Sphere Penetrating into a Water Bath
• A New Super-Resolution PIV Accelerated by Characteristic Pixel Selection
• Numerical Experiment of Drop Spreading by Front-Tracking Method : Accurate Representation of Interfacial Tension at Contact Line
• Numerical Simulation on Penetration Stage of a Rising Bubble through an Oil/Water Interface
• Numerical Observation of Flow Field around the Water Column behind a Rising Bubble through an Oil/Water Interface
• Numerical Simulation of a Contaminated Water Drop Sinking in a Oil by a Front-tracking Method

スポンサーリンク