Topic
Volume of fluid method
About: Volume of fluid method is a research topic. Over the lifetime, 5338 publications have been published within this topic receiving 116760 citations.
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TL;DR: In this article, the effects of temperature drop, contact angle, surface tension, and fin thickness on the condensation heat transfer were investigated using the volume of fluid (VOF) model.
Abstract: Condensation in a capillary groove is investigated using the volume of fluid (VOF) model. The governing equations are written in a generalized form and are applicable to both liquid and vapor phases. Condensation on the fin top and at the meniscus is modeled by introducing additional source terms in the continuity, VOF, and energy equations. The effects of temperature drop, contact angle, surface tension, and fin thickness on the condensation heat transfer are also investigated.
34 citations
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TL;DR: A novel Eulerian–Lagrangian piecewise-linear interface calculation (PLIC) volume-of-fluid (VOF) advection method, which is three-dimensional, unsplit, and discretely conservative and bounded, which satisfies conservation and boundedness of the liquid volume fraction irrespective of the underlying flux polyhedron geometry.
33 citations
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TL;DR: In this article, the authors assess the quantitative capabilities of three condensation models: numerical iteration technique, heat flux balance equation, and phase field, and the results showed that the phase field model fit best the experimental results.
33 citations
01 Jan 2010
TL;DR: In this article, the modifications and extensions of the Volume-of-Fluid solver in the OpenFOAM CFD package for the simulation of boiling flows are presented.
Abstract: In the present paper the modifications and extensions of the Volume-of-Fluid solver in the OpenFOAM CFD package for the simulation of boiling flows are presented. The main difficulties in the simulation of boiling flows are high temperature gradients at the liquid- vapor interface and microscopic heat and mass transfer at the 3-phase contact line. As the smeared interface in a pure Volume-of-Fluid method does not allow a precise reconstruction of the interface and thus hinders the accurate determination of the local temperature gradient, the solver is extended by a Level-Set method and a geometric reconstruction method. This facilitates an exact determination of the temperature gradient and of the local evaporation rate. In addition, the solver is extended by a sub-model for the microscale evaporation at the contact line which cannot be resolved on a CFD mesh. The sub-model is coupled to the simulation by adapting the thermal coupling between the solid heating wall and fluid domain. The modifications and the resulting model are validated by simulating phase change in a simple geometry and by simulating the heat and mass transfer during single bubble boiling. Further, the model is applied to perform a 3D simulation with adaptive mesh refinement of a lateral bubble merger. Very good qualitative and quantitative agreement with analytical approaches and experimental observations can be found.
33 citations
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TL;DR: In this paper, a two-way dynamic coupled numerical model was developed to simulate moving solids in free surface flows, where the fluid flows and hydrodynamic pressures were simulated by a Large Eddy Simulation model, and the free surface was tracked by the VOF method.
33 citations