Experimental Investigation of an Air Microjet Array Impingement Cooling Device

Autor:	Kevin S. Klasing, Rengasamy Ponnappan, John E. Leland
Rok vydání:	2002
Předmět:	Fluid Flow and Transfer Processes Pressure drop Jet (fluid) Materials science Mechanical Engineering Aerospace Engineering Mechanics Heat sink Condensed Matter Physics Nusselt number Coolant Space and Planetary Science Heat transfer Electronics cooling Choked flow
Zdroj:	Journal of Thermophysics and Heat Transfer. 16:187-192
ISSN:	1533-6808 0887-8722
DOI:	10.2514/2.6683
Popis:	A microjet impingement cooling device for high power electronics was constructed from silicon wafers using microelectromechnical systems fabrication techniques. The array of 221, 0.277-mm-diam jets was tested using air as the coolant for jet diameter Reynolds numbers from 4.65 × 10 2 to 1.405 x 10 3 . Heat transfer and pressure drop data were obtained for a range of mass rates extending up to the point of choked flow and also for variable heat fluxes. The results were compared to an existing Nusselt correlation for jet impingement arrays that was found to significantly under-predict the heat transfer. A new correlation is provided that also accounts for variable air properties
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0adf2dd56dd7d4e280a5eb46f0cda951 https://doi.org/10.2514/2.6683 Zobrazit plný text záznamu