Number：

04097033

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Name：

Lin Jin Biao

Titles：

Lecturer

Author：

Lin Jin Biao

Paper name：

Flow Visualizations of a Rotating Pin-Fin Heat Sink Under the Impinging-Jet Condition

Name of activity：

Twenty-fifth of the Chinese Mechanical Engineering Society National Symposium

Keywords：

Impinging jet，pin-fin heat sink，Rotating system，Flow visualization.

Abstract：

This work experimentally investigated the fluid folw behavior of an impinging-jet flow onto the rotating heat sing. Air was used as the impinging coolant while the square heat sinks with uniformly in-line arranged 9x9pin-fins was employed. Theside length (L) of the heat sing equaled 60 mm and the diameter of the hetnozzle was 13 mm. the jet Reynolds number(Re) was fixed at 1506，but the relative distance of nozzle-to-fin tip (Cld) was variable. Both flow characterstics of stationary and rotating sytstems were investigated successfully by the smoke visualization. The results of flow visualization would be helpful in improving the cookling design of such rotating system.

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