A new volume of fluid method in three dimensions-Part II: Piecewise-planar interface reconstruction with cubic-Bézier fit

2008 ◽  
Vol 58 (8) ◽  
pp. 923-944 ◽  
Author(s):  
J. López ◽  
C. Zanzi ◽  
P. Gómez ◽  
F. Faura ◽  
J. Hernández
Keyword(s):  
Volume Of Fluid ◽  
Planar Interface ◽  
Three Dimensions ◽  
Volume Of Fluid Method ◽  
Interface Reconstruction

Towards 3D Volume-of-Fluid Methods Featuring Subgrid-Scale Capturing of Interface Curvature

2014 ◽  
Author(s):  
Petar Liovic
Keyword(s):  
Volume Of Fluid ◽  
Planar Interface ◽  
Interface Tracking ◽  
Reconstruction Method ◽  
Interfacial Flow ◽  
Subgrid Scale ◽  
Order Accuracy ◽  
Interface Reconstruction ◽  
Interface Curvature ◽  
3D Volume

A new interface reconstruction method for Volume of Fluid (VOF) interface tracking is presented here, based on subgrid-scale planar interface segment reconstruction (SGS-PISR). In the SGS-PISR method implemented here, the centroid of the initial single-surface interface reconstruction is shifted along that normal to enclose the correct volume. An additional step then moves the SGS plane segments laterally outwards, to ameliorate the SGS curvature by blunting the protrusion of the centroid. The SGS-PISR method results in promising tendency towards second-order accuracy and more importantly reduced interface reconstruction errors across a range of mesh resolutions, and is targeted at improving VOF performance in resolving small grid-scale details of the interface topologies in interfacial flow CFD computations.

Interaction Between Multiple Solid Objects and Bubbles

2010 ◽  
Author(s):  
Ryuichi Iwata ◽  
Takeo Kajishima ◽  
Shintaro Takeuchi
Keyword(s):  
Numerical Method ◽  
Volume Of Fluid ◽  
Solid Particles ◽  
Immersed Boundary ◽  
Particle Interactions ◽  
Volume Of Fluid Method ◽  
Rising Bubble ◽  
Solid Objects ◽  
Multiple Particles ◽  
Particle Laden Flows

In the present study, bubble-particle interactions in suspensions are investigated by a coupled immersed-boundary and volume-of-fluid method (IB-VOF method), which is proposed by the present authors. The validity of the numerical method is examined through simulations of a rising bubble in a liquid and a falling particle in a liquid. Dilute particle-laden flows and a gas-liquid-solid flow involving solid particles and bubbles of comparable sizes to one another (Db/Dp = 1) are simulated. Drag coefficients of particles in particle-laden flows are estimated and flow fields involving multiple particles and a bubble are demonstrated.

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