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MCS
2006
Springer

A phase-field method for interface-tracking simulation of two-phase flows

8 years 6 months ago
A phase-field method for interface-tracking simulation of two-phase flows
For interface-tracking simulation of two-phase flows, we propose a new computational method, NS-PFM, combining Navier-Stokes (NS) equations with phase-field model (PFM). Based on the free energy theory, PFM describes an interface as a volumetric zone across which physical properties vary continuously. Surface tension is defined as an excessive free energy per unit area induced by density gradient. Consequently, PFM simplifies the interface-tracking procedure by use of a standard technique. The proposed NS-PFM was applied to several problems of incompressible, isothermal two-phase flow with the same density ratio as that of an air-water system. In this method, the Cahn-Hilliard (CH) equation was used for predicting interface configuration. It was confirmed through numerical simulations that (1) the flux driven by chemical potential gradient in the CH equation plays an important role in interfacial advection and reconstruction, (2) the NS-PFM gives good predictions for pressure increase...
Naoki Takada, Masaki Misawa, Akio Tomiyama
Added 14 Dec 2010
Updated 14 Dec 2010
Type Journal
Year 2006
Where MCS
Authors Naoki Takada, Masaki Misawa, Akio Tomiyama
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