The Simulation of Boiling Heat Transfer in Metal Foam Tube

Abstract:

A three-dimensional physical mode of metal foam tube was built by CFD software. The Brinkman-Forchheimer extended Darcy equation and user-defined function (UFD) of the mass transfer and energy transfer between vapor phase and liquid phase compiled by C language were used in the simulation of boiling heat transfer in metal foam tube. The results show that, at a given mass flow rate, the pressure drop nonlinearly increases as the vapor quality rises; At the low mass flow rate, with the increasing of vapor quality, the flow pattern is transferred to wavy flow from stratified flow and then transfer to stratified wavy flow, while the heat transfer coefficient decreases with the increasing of vapor quality. At the high mass flow rate, with the increasing of vapor quality, the flow pattern is transferred to annular flow from slug flow, while the heat transfer coefficient increases with the increasing of vapor quality. The simulation results agree well with the experimental data.

• Periodical: Applied Mechanics and Materials (Volumes 448-453)
• Pages: 3312-3315
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.448-453.3312
• Online since: October 2013
• Authors: Bin Sun, Bin Bin Cui, Chao Liang
• Keywords: Boiling Heat Transfer, Metal Foam, Numerical Simulation, Pressure Drop

References

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