Validation of the S‐CLSVOF method with the density‐scaled balanced continuum surface force model in multiphase systems coupled with thermocapillary flows. (30th June 2016)

• Record Type: Journal Article
• Authors: Yamamoto, Takuya; Okano, Yasunori; Dost, Sadik
• Is Part Of: International journal for numerical methods in fluids. Volume 83:Number 3(2017)
• Page Start: 223
• Page End: 244
• Publication Date: 2016-06-30
• Subjects: incompressible flow -- level set -- multiphase flows -- Navier–Stokes -- two‐phase flows -- validation; Fluid dynamics -- Mathematics -- Periodicals; 532
• DOI: 10.1002/fld.4267
• Languages: English
• ISSNs: 0271-2091

Abstract

Summary: Three numerical methods, namely, volume of fluid (VOF), simple coupled volume of fluid with level set (S‐CLSVOF), and S‐CLSVOF with the density‐scaled balanced continuum surface force (CSF) model, have been incorporated into OpenFOAM source code and were validated for their accuracy for three cases: (i) an isothermal static case, (ii) isothermal dynamic cases, and (iii) non‐isothermal dynamic cases with thermocapillary flow including dynamic interface deformation. Results have shown that the S‐CLSVOF method gives accurate results in the test cases with mild computation conditions, and the S‐CLSVOF technique with the density‐scaled balanced CSF model leads to accurate results in the cases of large interface deformations and large density and viscosity ratios. These show that these high accuracy methods would be appropriate to obtain accurate predictions in multiphase flow systems with thermocapillary flows. Copyright © 2016 John Wiley & Sons, Ltd. Abstract : Three numerical methods for multiphase flow with thermocapillary flow were validated for their accuracy by using OpenFOAM: volume of fluid, simple coupled volume of fluid with level set (S‐CLSVOF), and S‐CLSVOF with density‐scaled balanced continuum surface force (CSF) model. Results have shown that the S‐CLSVOF method gives accurate results, and S‐CLSVOF method with density‐scaled balanced CSF model leads to accurate results in the cases of large interface deformations and large density and viscosity ratios.