NDLI: Modeling and Numerical Simulations of Vapor-Liquid Flow and Heat Transfer Within Microchannel Heat Sinks

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Xin, Chengyun Wang, Jianhua Xie, Jianheng Song, Yuee
Copyright Year	2012
Abstract	Microchannel heat sinks have demonstrated the ability to dissipate large amounts of heat flux. This ability can be strongly enhanced by phase change of a liquid coolant. This paper numerically simulates the processes of liquid coolant flow, heat absorption and phase change within a microchannel, which is heated at one side by given heat fluxes. The two-phase flow model widely used in the investigations on heat and mass transfer within porous media is firstly introduced into microchannnel heat sinks by this paper. Experiential equations of the heat transfer coefficients in single phase and boiling region within microchannels are employed to calculate the convective heat exchange between solid wall and flowing fluid by an iterative process. The numerical results of pressure and temperature distributions obtained at different conditions are exhibited and analyzed. The results indicated that the trends predicted by this approach agree well with the previous references. Therefore the modeling is validated in some sense. At the same time, two phenomena, countercurrent flow in two-phase region and special pressure variations near the transition point, are exhibited.
Sponsorship	Nanotechnology Institute
Starting Page	377
Ending Page	383
Page Count	7
File Format	PDF
ISBN	9780791854778
DOI	10.1115/MNHMT2012-75239
Conference Proceedings	ASME 2012 Third International Conference on Micro/Nanoscale Heat and Mass Transfer
Language	English
Publisher Date	2012-03-03
Publisher Place	Atlanta, Georgia, USA
Access Restriction	Subscribed
Subject Keyword	Porous media Microchannel heat sinks Boiling heat transfer Two-phase flow Computer simulation Porous materials Vapors Boiling Flow (dynamics) Heat sinks Modeling Heat transfer Microchannels
Content Type	Text
Resource Type	Article

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