Numerical Simulation and Size Optimization of the Flow Channel of Rectangular Micro-Channel Heat Sink

Abstract:

Because micro-channel has the advantages of small volume, low flow velocity and high efficiency, with the rapid development of miniaturization industry, micro heat sink is widely used. Previous studies have shown that the micro-channel heat transfer performance is mainly determined on its geometric and flow condition, and compared with triangle and trapezoid shape, rectangle structure has better heat transfer performance.Based on the finite element software ANSYS Workbench, micro-channel heat sink with the length of 40mm and different cross-sectional dimension are analyzed numerically, the dimension of micro-channel with smaller pressure drop and high heat transfer is gained. For the optimized model, when a given initial temperature 298K, flow rate of 1.5×10^-4kg/s, the substrate give heat flux as 187500 W/m². The heat flux of 5532W/m² can be dissipated, the pressure drop is reduced to 230.2Pa, and the heat transfer rate is 5.254W, so this micro-channel heat sink has good working performance.

• Periodical: Applied Mechanics and Materials (Volumes 444-445)
• Pages: 568-573
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.444-445.568
• Online since: October 2013
• Authors: Ying He, Bao Dong Shao, He Ming Cheng, Yan Jun Tang
• Keywords: Heat Flux, Heat Transfer Efficiency, Numerical Simulation, Pressure Drop, Rectangular Micro-Channel

References

[1] D.B. Tuckerman, R.F.W. Pease, High-performance heat sinking for VLSI, IEEE Electronic Device Letter 2, (1981), pp.126-129.

DOI: 10.1109/edl.1981.25367

[2] Peng X F, Peterson G P, Convective heat transfer and flow friction for water flow in microchannel structures, International Journal of Heat Mass Transfer, Vol. 39, No. 12, (1996), p.2599—2608.

DOI: 10.1016/0017-9310(95)00327-4

[3] Afzal Husain, Kwang-Yong Kim, Optimization of a microchannel heat sink with temperature dependent fluid properties, Applied Thermal Engineering, Vol. 28, 2008, p.1101–1107.

DOI: 10.1016/j.applthermaleng.2007.12.001

[4] Mohammad M. Mansoor, Kok-Cheong Wong, Mansoor Siddique, Numerical investigation of fluid flow and heat transfer under high heat flux using rectangular micro-channels, International Communications in Heat and Mass Transfer, Vol. 39, 2012, p.291.

DOI: 10.1016/j.icheatmasstransfer.2011.12.002

[5] X.L. Xie, Z.J. Liu, Y.L. He, W.Q. Tao, Numerical study of laminar heat transfer and pressure drop characteristics in a water-cooled minichannel heat sink, Applied Thermal Engineering, Vol. 29, 2009, p.64–74.

DOI: 10.1016/j.applthermaleng.2008.02.002

[6] Reiyu Chein, Janghwa Chen, Numerical study of the inlet/outlet arrangement effect on microchannel heat sink Performance, International Journal of Thermal Sciences, Vol. 8, 2009, p.1627–1638.

DOI: 10.1016/j.ijthermalsci.2008.12.019

[7] S.H. Chong, K.T. Ooi , T.N. Wong, Optimization of single and double layer counter flow microchannel heat sinks, Applied Thermal Engineering, Vol. 22, 2002, p.1569–1585.

DOI: 10.1016/s1359-4311(02)00083-2

[8] Kwasi Foli, Tatsuya Okabe, Markus Olhofer , Yaochu Jin, Bernhard Sendhoff, Optimization of micro heat exchanger: CFD, analytical approach and multi-objective evolutionary algorithms, International Journal of Heat and Mass Transfer, Vol. 48, 2006, p.1090.

DOI: 10.1016/j.ijheatmasstransfer.2005.08.032

[9] Shao Baodong, Sun Zhaowei, Wang Lifeng, Optimization design of structural size of microchannel cooling heat sink, International Journal of Heat & Fluid Flow, Vol. 2, 2007, pp.313-318.

DOI: 10.1108/09615530710761243

[10] Xiaojin Wei and Yogendra Joshi, Member, Optimization Study of Stacked Micro-Channel Heat Sinks for Micro-Electronic Cooling, IEEE TRANSACTIONS ON COMPONENTS AND PACKAGING TECHNOLOGIES, Vol. 1, No. 26, (2003).

DOI: 10.1109/tcapt.2003.811473

[11] Weilin Qu, Gh. Mohiuddin Mala, Dongqing Li, Heat transfer for water flow in trapezoidal silicon microchannels, International Journal of Heat and Mass Transfer, Vol. 43, 2000, pp.3925-3936.

DOI: 10.1016/s0017-9310(00)00045-4

[12] Jiang jie, Hao yingli, Shi mingheng, Experimental study on f low and heat transfer characteristics in rectangular microchannel, Journal of Thermal Science and Technology, Vol. 3, 2006, pp.189-194.

[13] ZHENG Huifan, QIN Guimian, FAN Xiaowei, LI An gui, ZHANG WenQuan, Development of Experimental Study on Single-phase Flow Characteristics of Micro-channels, ENERGY CONSERVATION TECHNOLOGY, Vol. 1, 2008, pp.32-38.