首页|Computational modelling of gas-liquid-solid multiphase free surface flow with and without evaporation
Computational modelling of gas-liquid-solid multiphase free surface flow with and without evaporation
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Gas-liquid-solid multiphase systems are ubiquitous in engineering applications,e.g.inkjet printing,spray drying and coating.Developing a numerical framework for modelling these multiphase systems is of great significance.An improved,resolved computational fluid dynamics-discrete element method(CFD-DEM)framework is developed to model the multiphase free surface flow with and without evaporation.An improved capillary force model is developed to compute the capillary interactions for partially floating particles at a free surface.Three well-known benchmark cases,namely drag coefficient calculation,the single sphere settling,and drafting-kissing-tumbling of two particles are conducted to validate the resolved CFD-DEM model.It turns out that the resolved CFD-DEM model developed in this paper can accurately calculate the fluid-solid interactions and predict the trajectory of solid particles interacting with the liquid phase.Numerical demonstrations,namely two particles moving along a free surface when the liquid phase evaporates,and particle transport and accumulations inside an evapo-rating sessile droplet show the performance of the resolved model.
Capillary forceDiscrete element methodLiquid bridgeParticle transportResolved CFD-DEMVolume of fluid
Huihuang Xia、Marc Kamiah
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Institute for Applied Materials(IAM),Karlsruhe Institute of Technology(KIT),Hermann-von Helmholtz-Platz 176344 Eggenstein-Leopoldshafen,Germany
China Scholarship Council(CSC)Helmholtz Association in Germany
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