A study of turbulent heat transfer in convergent-divergent shaped microchannel with ribs and cavities using CFD

Pankaj Srivastava; Anupam Dewan

doi:10.15282/jmes.14.1.2020.12.0497

Authors

Pankaj Srivastava Instruments Research and Development Establishment, Defence Research and Development Organisation Dehradun - 248008, Uttarakhand, India.
Anupam Dewan Department of Applied Mechanics, Indian Institute of Technology Delhi, Hauz Khas, New Delhi - 110016, India. Phone: +911126594217.

DOI:

https://doi.org/10.15282/jmes.14.1.2020.12.0497

Keywords:

Heat transfer enhancement, turbulent heat transfer, thermal resistance, ribs and cavities

Abstract

This paper presents the effects of microchannel shape with ribs and cavities on turbulent heat transfer. Three-dimensional conjugate heat transfer using the SST k-ω turbulence model has been investigated for four different microchannels, namely, rectangular, rectangular with ribs and cavities, convergent-divergent (CD) and convergent-divergent with Ribs and Cavities (CD-RC). The flow field, pressure and temperature distributions and friction factor are analyzed, and thermal resistance and average Nusselt number are compared. The thermal performance of the CD-RC microchannel is found to be better than that of other microchannels considered in terms of an average Nusselt number increased from 16% to 40%. Heat transfer increases due to a strong fluid mixing and periodic interruption of boundary-layer. It is observed that with an increase in Reynolds number (Re), the thermal resitance drops rapidly. The thermal resistance of the CD-RC microchannel is decreased by 30% than that of the rectangular microchannel for Re ranging from 2500 to 7000. However, such design of microchannel loses its heat transfer effectiveness due to a high pumping power at high values of Re.

References

Tuckerman DB, Pease RFW. High-performance heat sinking for VLSI. IEEE: Electronic Device Letter. 1981; 12: 126-129.

Qu W, Mudawar I. Analysis of three dimensional heat transfer in micro-channel heat sink. International Journal of Heat and Mass Transfer. 2004; 45: 3973-3985.

Dewan A, Srivastava P. A review of heat transfer enhancement through flow disruption in a microchannel, Journal of Thermal Science. 2015; 24: 203-214.

Kamal H, Dewan A. Analysis of interrupted rectangular microchannel heat sink with high aspect ratio, Journal of Applied Fluid Mechanics. 2017; 10: 117-126.

Xie XL, Tao WQ, He YL. Numerical study of turbulent heat transfer and pressure drop characteristics in a water-cooled minichannel heat sink. ASME: Journal of Electronic Packaging. 2007; 129: 247-255.

Srivastava P, Dewan A, Bajpai JK. Flow and heat transfer characteristics in convergent-divergent shaped microchannel with ribs and cavities. International Journal of Heat and Technology. 2017; 35: 863-873.

Duryodhan VS, Singh A, Singh SG, Agrawal A. Convective heat transfer in diverging and converging microchannels, International Journal of Heat and Mass Transfer. 2015; 80: 424-438.

Srivastava P, Dewan A. Effect of bifurcation on thermal characteristics of convergent-divergent shaped microchannel. ASME Journal of Thermal Science and Engineering Applications. 2018; 10: 041008.

Hussein AM, Sharma KV, Bakar RA, Kadirgama K. Heat transfer enhancement with nanofluids - A Review. Journal of Mechanical Engineering and Sciences, 2013; 4: 452-461.

Sangmesh B, Gopalakrishna K, Manjunath SH, Kathyayini N, Kadirgama K, Samykano M, Vijayakumar GC. Experimental investigation on HSFP using MWCNT based nanofluids for high power light emitting diodes. Journal of Mechanical Engineering and Sciences, 2018; 12(3): 3852-3865.

Abidin SZ, Mohamad IS, Bani Hashim AY, Abdullah N, Hafiz MIM, Masripan NAB, Abdullah A. Investigation of thermal characteristics of CNF-based nanofluids for electronic cooling applications. Journal of Mechanical Engineering and Sciences, 2016; 10(3): 2336-2349.

Menni Y, Azzi1 A, Chamkha A J. Optimal thermo aerodynamic performance of s-shaped baffled channels. Journal of Mechanical Engineering and Sciences, 2018; 12(3): 3888-3913.

Liu D, Garimella SV. Investigation of liquid flow in micro channels. AIAA: Journal of Thermophysics and Heat Transfer. 2004; 18: 65-72.

Wang BX, Peng XF. Experimental investigation on liquid forced convection heat transfer through microchannels. International Journal of Heat and Mass Transfer. 1994; 37: 73-82.

Adams TM, Dowling MF, Abdel-Khalik SI, Jeter SM. Applicability of traditional turbulent single-phase forced convection correlations to non-circular microchannels. International Journal of Heat and Mass Transfer. 1999; 42: 4411-4415.

Li H, Olsen MG. Micro-PIV measurements of turbulent flow in square microchannels with hydraulic diameters from 200 to 640 μm. International Journal of Fluid Flow. 2006; 27: 123-134.

Oumer AN, Rao NT, Basrawi F, Ibrahim H. Numerical simulation on flow and heat transfer characteristics of supercritical fluids in mini-channels. Journal of Advances in Technology and Engineering Research. 2016; 2(3) :81-86.

Rahman MM. Measurements of heat transfer in microchannel heat sink. International Communications in Heat and Mass Transfer. 2000; 27: 495-506.

Al-Neama AF, Kapur N, Summers J, Thompson HM. An experimental and numerical investigation of the use of liquid flow in serpentine microchannels for microelectronics cooling. Applied Thermal Engineering. 2017; 116: 709-723.

Adib MAHM, Tuah NN, Hasni NHM, Osman K. Prediction of blood pressure in S shaped model of artery under normal blood pressure. Journal of Mechanical Engineering and Sciences. 2013; 4: 496-503.

Cheng KX, Chong YS. Ooi K T. Thermal-hydraulic performance of a tapered microchannel. International Communications in Heat and Mass Transfer. 2018; 94: 63-60.

Chan SM, Chong KH, Wong BT. The effect of 10μm microchannel on thermo-hydraulic performance for singlephase flow in semi-circular cross-section serpentine. Journal of Mechanical Engineering and Sciences. 2018; 12: 3724-3737.

Wang Y, Houshm F, Elcock D, Peles Y. Convective heat transfer and mixing enhancement in a microchannel with a pillar. International Journal of Heat and Mass Transfer. 2013; 62: 553–561.

Rezaei O, Akbari OA, Marzban A, Toghraie D, Pourfattah F, Mashayekhi R. The numerical investigation of heat transfer and pressure drop of turbulent flow in a triangular microchannel, Physica-E, Low Dimensional Systems Nanostructures. 2017; 93: 179-189.

Sharma N, Tariq A, Mishra M. Detailed heat transfer and fluid flow investigation in a rectangular duct with truncated prismatic ribs. Experimental Thermal and Fluid Science. 2018; 96: 383-396.

Abdulrazzaq T, Togun H, AAriffin MK, Kazi SN, Adam NM, Masuri S. Numerical simulation on heat transfer enhancement in channel by triangular ribs. International Journal of Mechanical, Aerospace, Industrial and Mechatronics Engineering. 2013; 7: 605-609.

Dewan A. Tackling Turbulent Flow in Engineering. 2011, Springer, Berlin.