Analytical and experimental investigations on fluid flow and thermal characteristics of a plate-fin heat sink subject to a uniformly impinging jet

• Published in: International journal of heat and mass transfer Vol. 53; no. 9; pp. 2318 - 2323
• Main Authors: Do, Kyu Hyung, Kim, Tae Hoon, Kim, Sung Jin
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.04.2010; Elsevier
• Subjects: Applied sciences; Computational fluid dynamics; Design. Technologies. Operation analysis. Testing; Electronics; Exact sciences and technology; Fluid flow; Fluids; Heat sink; Heat sinks; Heat transfer; Integrated circuits; Mathematical analysis; Mathematical models; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices; Similarity solutions; Similarity transformation; Uniformly impinging jet; Volume averaging technique; Uniformly impinging jet; Volume averaging technique; Similarity transformation; Heat sink; Electronic component; Interaction; Cooling system; Theoretical study; Jet; Experimental study; Heat transfer
• ISSN: 0017-9310; 1879-2189
• DOI: 10.1016/j.ijheatmasstransfer.2009.12.049

In this paper, modified similarity solutions for velocity and temperature distributions in the heat sink subject to a uniformly impinging jet are presented. A heat sink is modeled as a fluid-saturated porous medium and a similarity transformation is employed. The Brinkman-extended Darcy equations for fluid flow and two-equation model for heat transfer are used as the governing equations. Specifically, a method for analytically determining the permeability and the interstitial heat transfer coefficient is presented. Experimental investigations are conducted to validate the proposed similarity solutions. From comparison of experimental and analytical results, the analytical results are shown to accurately predict the pressure drop and thermal resistance of the heat sink subject to the uniformly impinging jet.