THERMAL SCIENCE

International Scientific Journal

COMPARATIVE STUDY OF HEAT AND FLUID FLOW CHARACTERISTICS OF PARALLEL AND OFFSET STRIP FIN MICRO-CHANNELS USING CFD SIMULATIONS

ABSTRACT
The primary aim of this study was to consider novel configurations of water-cooled micro-channel layout and compare them with existing configurations. The authors emphasize on establishing a benchmark based on investigations by earlier researchers and numerically analysing them. As a first attempt, offset strip fins are compared with existing parallel fins in terms of subsequent flow fields and temperature profiles. In offset types designated as A and B, the highest velocities occur at the side channels because of the straight wall allowing smooth flow through the channel. Generally, for offset type, the velocity increases after the sidewalls towards the centre. Type A configuration had an uneven velocity profile because of its staggered channel entrance. The lowest average temperature was observed in parallel heat sinks, followed by type A and type B. Causes are discussed for the observed differences and criteria are suggested for the selection of an appropriate geometry of offset fins. An efficient cooling system will ensure effective working of equipment resulting in low energy consumption and better sustainability. This work opens a platform for research on various other configurations and their use in micro-channel cooling.
KEYWORDS
PAPER SUBMITTED: 2017-12-26
PAPER REVISED: 2018-04-03
PAPER ACCEPTED: 2018-04-04
PUBLISHED ONLINE: 2018-09-23
DOI REFERENCE: https://doi.org/10.2298/TSCI171226264V
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2018, VOLUME 22, ISSUE 5, PAGES [1973 - 1985]
REFERENCES
  1. Tuckerman, D. B., Pease, R. F. W., High-performance Heat Sinking for VLSI, IEEE Electron Device Lett., EDL-2 (1981), 5, pp. 126-129
  2. Wang, B., Peng, X., Experimental Investigation on Liquid Forced Convection Heat Transfer Through Micro-channels, International Journal of Heat and Mass Transfer, 37 (1994), Supp. 1, pp. 73-82
  3. Hetsroni, G., et al., Fluid Flow in Micro-Channels, International Journal of Heat and Mass Transfer, 48 (2005), 10, pp. 1982-1998
  4. Peng, X., Peterson, G., The Effect of Thermo Fluid and Geometrical Parameters on Convection of Liquids Through Rectangular Micro-channels, International Journal of Heat and Mass Transfer, 38 (1995), 4, pp. 755-758
  5. Mala, M. G., Li, D., Flow Characteristics of Water in Microtubes, International Journal of Heat and Fluid Flow, 20 (1999), 2, pp. 142-148
  6. Qu, W., et al., Pressure-Driven Water Flows in Trapezoidal Silicon Micro-channels, International Journal of Heat and Mass Transfer, 43 (2000), 3, pp. 353-364
  7. Qu, W., Mudawar, I., Experimental and Numerical Study of Pressure Drop and Heat Transfer in a Single-Phase Micro-Channel Heat Sink, International Journal of Heat and Mass Transfer, 45 (2002), 12, pp. 2549-2565
  8. Mehendale, S. S., et al., Fluid Flow and Heat Transfer at Micro- and Meso-scales with Application to Heat Exchanger Design, Applied Mechanics Review, 53 (2000), 7, pp. 175-193
  9. Kandlikar, S. G., Grande, W. J., Evolution of Microchannel Flow Passages: Thermohydraulic Performance and Fabrication Technology, Proceedings, ASME International Mechanical Engineering Congress and Exposition, Technology and Society and Engineering Business Management, New Orleans, Louisiana, USA, 2002, pp. 59-72
  10. Obot, N. T., Towards a Better Understanding of Friction and Heat/Mass Transfer in Microchannels ‒ A Literature Review, Microscale Thermophysical Engineering, 6 (2003), 3, pp. 155-173
  11. Bahrami, M., Jovanovich, M., Pressure Drop of Fully Developed Laminar Flow in Microchannels of Arbitrary Cross-Section, Journal of Fluids Engineering, 128 (2006), 5, pp. 1036-1044
  12. Bahrami, M., et al., Pressure Drop of Fully Developed, Laminar Flow in Rough Microtubes, Journal of Fluids Engineering, 128 (2006), 3, pp. 632-637
  13. Bayraktar, T., Pidugu, S., Characterization of Liquid Flows in Microfluidic Systems, International Journal of Heat and Mass Transfer, 49 (2006), 5-6, pp. 815-824
  14. Lee, P., et al., Investigation of Heat Transfer in Rectangular Microchannels, International Journal of Heat and Mass Transfer, 48 (2005), 9, pp. 1688-1704
  15. Reynaud, S., et al., Hydrodynamics and Heat Transfer in Two-Dimensional Minichannels, International Journal of Heat and Mass Transfer, 48 (2005), 15, pp. 3197-3211
  16. Chein, R., Chen, J., Numerical Study of the Inlet/outlet Arrangement Effect on Microchannel Heat Sink Performance, International Journal of Thermal Sciences, 48 (2009), 8, pp. 1627-1638
  17. Vinodhan, V. L., Rajan, K., Computational Analysis of New Microchannel Heat Sink Configurations, Energy Conversion and Management, 86 (2014), Oct., pp. 595-604
  18. Colgan, E. G., et al., A Practical Implementation of Silicon Microchannel Coolers for High Power Chips, IEEE Transactions on Components and Packaging Technologies, 30 (2007), 2, pp. 218-225
  19. Kandlikar, S. G., Upadhye, H. R., Extending the Heat Flux Limit with Enhanced Micro-channels in Direct Single Phase Cooling of Computer Chips, Proceedings, IEEE 21st Annu. Symp. Semiconductor Thermal Meas. Manag., San Jose, California, USA, 2005, pp. 8-15
  20. Hong, F., Cheng, P., Three-dimensional Numerical Analysis and Optimization of Offset Strip-fin Microchannel Heat Sinks, International Communications in Heat and Mass Transfer, 36 (2009), 7, pp. 651-656
  21. Lu, M. C., Wang, C. C., Effect of the Inlet Location on the Performance of Parallel-Channel Cold Plate, IEEE Transactions on Components and Packaging Technologies, 29 (2006), 1, pp. 30-38
  22. Peng, X. F., et al., Frictional Flow Characteristics of Water Flowing Through Microchannels, Experimental Heat Transfer, 7 (1994), 4, pp. 249-264
  23. Peng, X. F., et al., Heat Transfer Characteristics of Water Flowing Through Microchannels, Experimental Heat Transfer, 7 (1994), 4, pp. 265-283
  24. Mendu, S. S., Das, P. K., Fluid Flow in a Cavity Driven by an Oscillating Lid ‒ A Simulation by Lattice Boltzmann Method, Europea Journal of Mechanics - B/Fluids, 39 (2013), May-June, pp. 59-70
  25. Guo, X., et al., Numerical and Experimental Study of Gas Flows in 2D and 3D Microchannels, Journal of Micromechanics and Microengineering, 18 (2008), 2, pp. 1-8

© 2018 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence