Title :
Impingement air cooled plate fin heat sinks. Part I - Pressure drop model
Author :
Duan, Zhipeng ; Muzychka, Yuri S.
Author_Institution :
Fac. of Eng. & Appl. Sci., Memorial Univ. of Newfoundland, St. John´´s, Nfld., Canada
Abstract :
The performance of impingement air cooled plate fin heat sinks differs significantly from that of parallel flow plate fin heat sinks. A semi-empirical zonal model has been published to predict impingement flow in plate fin heat sinks. This model is not convenient to apply since it involves a large number of equations. A simple impingement flow pressure drop model based on developing laminar flow in rectangular channels is proposed. To test the validity of the model, experimental measurements of pressure drop are performed with heat sinks of various impingement inlet widths, fin spacings, fin heights and airflow velocities. It was found that the predictions agree with experimental data within 20% at channel Reynolds numbers less than 1200. The simple model is suitable for parametric design studies.
Keywords :
channel flow; cooling; flow simulation; heat sinks; laminar flow; Reynolds number; airflow velocity; fin height; fin spacing; impingement air cooled plate fin heat sink; impingement inlet width; laminar flow; rectangular channel; semiempirical zonal model; simple impingement flow pressure drop model; Friction; Heat engines; Heat sinks; Hydraulic diameter; Performance evaluation; Performance loss; Predictive models; Pressure measurement; Testing; Velocity measurement;
Conference_Titel :
Thermal and Thermomechanical Phenomena in Electronic Systems, 2004. ITHERM '04. The Ninth Intersociety Conference on
Print_ISBN :
0-7803-8357-5
DOI :
10.1109/ITHERM.2004.1319206
