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Cylindrical pin-fin fan-sink heat transfer and pressure drop correlations

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2 Author(s)
Ning Zheng ; Dept. of Mech. Eng., Nevada Univ., Reno, NV, USA ; Wirtz, R.A.

New pressure drop/flow rate measurements coupled with a previously reported heat transfer database have resulted in new friction factor and heat transfer correlation equations for fan-driven impinging flow through square arrays of cylindrical cross section pin-fins. The correlation equations include the effect of coolant flow rate, pin-fin density and pin-fin height. A comparison with a similar jet-driven impingement flow configuration shows that the heat transfer/pressure drop characteristics. of the two flow configurations are fundamentally different. When the same arrays are compared at the same coolant flow rate, the fan-driven configuration will result in a lower pressure drop and heat transfer rate. An analysis shows that different optimal pin-fin configurations (fin height and fin density) result, depending on the design criteria imposed on the flow

Published in:

Components and Packaging Technologies, IEEE Transactions on  (Volume:25 ,  Issue: 1 )

Date of Publication:

Mar 2002

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