A Separated-Flow Model for Predicting Flow Boiling Critical Heat Flux and Pressure Drop Characteristics in Microchannels
Author(s)
Zhang, Tiejun
Chen, Siyu
Wang, Evelyn
Date Issued
July 2012
Journal
ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels
Publisher
ASME International
Citation
Zhang, Tie Jun, Siyu Chen, and Evelyn N. Wang. “A Separated-Flow Model for Predicting Flow Boiling Critical Heat Flux and Pressure Drop Characteristics in Microchannels.” ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels, 8-12 July, 2012, Rio Grande, Puerto Rico, USA, ASME, 2012. © 2012 by ASME
Version
Final published version
Abstract
Two-phase microchannel cooling promises high heat flux removal for high-performance electronics and photonics. However, the heat transfer performance of flow boiling microchannels is limited by the critical heat flux (CHF) conditions. For variable heat inputs and variable fluid flows, it is essential to predict CHFs accurately for effective and efficient two-phase microchannel cooling. To characterize the CHF and pressure drop in flow boiling microchannels, a separated-flow model is proposed in this paper based on fundamental two-phase flow mass, energy, momentum conservation and wall energy conservation laws. With this theoretical framework, the relationship among liquid/vapor interfacial instability, two-phase flow characteristics and CHF is further studied. This mechanistic model also provides insight into the design and operational guidelines for advanced electronics and photonics cooling technologies. Copyright © 2012 by ASME.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1115/ICNMM2012-73046
