Higher heat flux is produced by Micro-Electro-Mechanical Systems (MEMS) because of their reduced size and increased clock speed. At the mean time, studies of non-uniform heating conditions which are more practical than uniform heating conditions are inadequate and needed urgently. Four nonuniform heating conditions are simulated in the paper. Three heat sinks with different widths of cross-linked channels locating above the center of hotspots are studied and compared to conventional straight microchannel heat sink. Half of the module geometry is chosen to be the computational domain. Two hotspots are placed at the bottom surface. The coolant is water, whose properties are dependent on temperature. Two inlet velocities, 0.5 m/s and 1 m/s, are tested for each heat sink. Temperature profile at the hotspots, pressure drop and total thermal resistance are selected as criteria of evaluating heat sink performance. All heat sinks have better performance when there is an upstream hotspot or the upstream hotspot is subjected to a higher heat flux. Cross-linked channel width of 0.5 mm has the best benefit to obtain better temperature uniformity without increasing the maximum temperature on the bottom surface.
Skip Nav Destination
ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels
June 19–22, 2011
Edmonton, Alberta, Canada
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-4464-9
PROCEEDINGS PAPER
Numerical Study of Microchannel Heat Sinks With Non-Uniform Heat Flux Conditions
Ling Ling,
Ling Ling
Concordia University, Montreal, QC, Canada
Search for other works by this author on:
Yanfeng Fan,
Yanfeng Fan
Concordia University, Montreal, QC, Canada
Search for other works by this author on:
Ibrahim Hassan
Ibrahim Hassan
Concordia University, Montreal, QC, Canada
Search for other works by this author on:
Ling Ling
Concordia University, Montreal, QC, Canada
Yanfeng Fan
Concordia University, Montreal, QC, Canada
Ibrahim Hassan
Concordia University, Montreal, QC, Canada
Paper No:
ICNMM2011-58179, pp. 87-93; 7 pages
Published Online:
May 11, 2012
Citation
Ling, L, Fan, Y, & Hassan, I. "Numerical Study of Microchannel Heat Sinks With Non-Uniform Heat Flux Conditions." Proceedings of the ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels. ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, Volume 2. Edmonton, Alberta, Canada. June 19–22, 2011. pp. 87-93. ASME. https://doi.org/10.1115/ICNMM2011-58179
Download citation file:
11
Views
Related Proceedings Papers
Related Articles
Thermal-Hydraulic Performance of MEMS-based Pin Fin Heat
Sink
J. Heat Transfer (February,2006)
A Systematic Methodology for Optimal Design of Two-Phase Micro-Channel Heat Sinks
J. Electron. Packag (December,2005)
Numerical Study of Turbulent Heat Transfer and Pressure Drop Characteristics in a Water-Cooled Minichannel Heat Sink
J. Electron. Packag (September,2007)
Related Chapters
Thermodynamic Performance
Closed-Cycle Gas Turbines: Operating Experience and Future Potential
Designing a Water Clock
Case Studies in Fluid Mechanics with Sensitivities to Governing Variables
Summary
Heat Transfer & Hydraulic Resistance at Supercritical Pressures in Power Engineering Applications