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• W4210647294 endingPage "111006" @default.
• W4210647294 startingPage "111006" @default.
• W4210647294 abstract "• Compute two-phase flows with no spurious currents. • Instead of spurious currents, low-amplitude capillary waves at the inter- face are computed. • New fractional-step algorithm that is able to capture pressure jump due to surface tension accurately. • Handles extremely high density ratios above 1,000,000,000 and extremely high surface-tension constants above 500 N/m without spurious currents. Using current cell-centered numerical methods to calculate two-phase flows result in spurious currents developing at the interface between both phases when the capillary number is low enough. Treatments of the interface such as: computing surface tension more accurately, smoothing of the indicator function, and balancing the pressure and surface tension, are often used to reduce spurious currents. These treatments can affect the physics of the interface, and these approaches struggle when the density ratios are high or when the meshes are distorted. This paper presents a methodology that uses a moving unstructured staggered mesh that can handle extremely high-density ratios of at least 1,000,000,000 and extremely high surface tensions of at least 500 N/m without generating spurious currents. Instead of spurious currents, only physically correct low-amplitude and low energy capillary waves at the interface result from the errors in the surface discretization. The method is demonstrated on 2D static and dynamic droplet cases." @default.
• W4210647294 created "2022-02-08" @default.
• W4210647294 creator A5031120443 @default.
• W4210647294 creator A5071890134 @default.
• W4210647294 creator A5089940851 @default.
• W4210647294 date "2022-05-01" @default.
• W4210647294 modified "2023-09-30" @default.
• W4210647294 title "A front-tracking method for two-phase flow simulation with no spurious currents" @default.
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• W4210647294 doi "https://doi.org/10.1016/j.jcp.2022.111006" @default.
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