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Cfd Simulation Of Condensing Vapor Bubble Using Vof Model

Authors: Seong-Su Jeon; Seong-Jin Kim; Goon-Cherl Park;

Cfd Simulation Of Condensing Vapor Bubble Using Vof Model

Abstract

{"references": ["B.G.M. van Wachem and J.C.Schouten, \"Experimental Validation 3-D\nLagrangian VOF Model: Bubble Shape and Rise Velocity,\" AIChE\nJournal, vol.48, pp. 2744-2753, 2002.", "Daniel Lorstad and Laszlo Fuchs, \"High-order surface tension\nVOF-model for 3D bubble flows with high density ratio,\" Journal of\nComputational Physics, vol. 200, pp. 153-176, 2004.", "Li Chen and Yuguo Li, \"A numerical method for two-phase flows with an\ninterface,\" Environmental Modeling & Software, vol. 13, pp. 247-255,\n1998.", "M. van Sint Annaland, N.G. Deen and J.A.M. Kuipers, \"Numerical\nsimulation of gas bubbles behavior using a three-dimensional volume of\nfluid method,\" Chemical Engineering Science, vol. 60, pp. 2999-3011,\n2005.", "5. Vinay R. Gopala and Berend G.M. van Wachem, \"Volume of fluid\nmethods for immiscible-fluid and free-surface flows,\" Chemical\nEngineering Journal, vol.141, pp. 204-221, 2008.", "Seong-Jin Kim and Goon-Cherl Park, \"Interfacial Heat Transfer of\nCondensing Bubble in Subcooled Boiling Flow at Low Pressure,\" HEAT\n2008, Fifth International Conference on Transport Phenomena In\nMultiphase Systems, Bialystok, Poland, June 30-July 3, 2008.", "Hirt, C.W. and Nichols, B.D., \"Volume of fluid (VOF) method for the\ndynamics of free boundaries,\" J. Comp. Phys, vol. 39, pp. 201-225, 1982.", "Fluent 6.0 Users Guide Documentation, Fluent Inc, 2001."]}

In this study, direct numerical simulation for the bubble condensation in the subcooled boiling flow was performed. The main goal was to develop the CFD modeling for the bubble condensation and to evaluate the accuracy of the VOF model with the developed CFD modeling. CFD modeling for the bubble condensation was developed by modeling the source terms in the governing equations of VOF model using UDF. In the modeling, the amount of condensation was determined using the interfacial heat transfer coefficient obtained from the bubble velocity, liquid temperature and bubble diameter every time step. To evaluate the VOF model using the CFD modeling for the bubble condensation, CFD simulation results were compared with SNU experimental results such as bubble volume and shape, interfacial area, bubble diameter and bubble velocity. Simulation results predicted well the behavior of the actual condensing bubble. Therefore, it can be concluded that the VOF model using the CFD modeling for the bubble condensation will be a useful computational fluid dynamics tool for analyzing the behavior of the condensing bubble in a wide range of the subcooled boiling flow.

Keywords

CFD modeling, Subcooled boiling flow, Bubble condensation, VOF model.

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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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