Journal
INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW
Volume 31, Issue 4, Pages 586-598Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.ijheatfluidflow.2010.03.001
Keywords
Manifold; Micro-channels; Impinging jet; Heat transfer; Electronics cooling
Categories
Funding
- KTI/CTI [8074.1 NMPP-N]
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We present an ultra thin heat sink for electronics, combining optimized impinging slot-jets, micro-channels and manifolds for efficient cooling. We first introduce a three-dimensional numerical model of the heat transfer structure, to investigate its hydrodynamic and thermal performance and its sensitivity to geometric parameters. In a second step we propose a three-dimensional hydrodynamic numerical model representing the complete system. Based on this model we design a novel manifold providing uniform fluid distribution. In order to save computational time a simpler semi-empirical model is proposed and validated. The semi-empirical model allows a robust optimization of the heat sink geometric parameters. The design is optimized for a 2 x 2 cm(2) chip and provides a total thermal resistance of 0.087 cm(2) K/W for flow rates <1 l/mm n and an overall pressure drop <0.1 bar. This results in a maximum cooling capacity of 750 W/cm(2) for a temperature difference between fluid inlet and chip of 65 K. (c) 2010 Elsevier Inc. All rights reserved.
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