Investigation of heat transfer and pressure drop of an impinging jet in a cross-flow for cooling of a heated cube
2008 (English)In: Journal of heat transfer, ISSN 0022-1481, Vol. 130, no 12, 121401-121413 p.Article in journal (Refereed) Published
The objective of this study is to investigate the thermal performance and the cost measured in pressure drops of a targeted cooling system with use of an impinging jet in combination with a low-velocity channel flow on a heated wall-mounted cube. The effects of the Reynolds numbers of the impinging jet and the cross-flow, as well as the distance between the top and bottom plates, are investigated. A steady-state 3D computational fluid dynamics model was developed with use of a Reynolds stress model as turbulence model. The geometrical case is a channel with a heated cube in the middle of the base plate and two inlets, one horizontal channel flow and one vertical impinging jet. The numerical model was validated against experimental data with a similar geometrical setup. The velocity field was measured by particle image velocimetry and the surface temperature was measured by an infrared imaging system. This case results in a very complex flow structure where several flow-related phenomena influence the heat transfer rate and the pressure drops. The average heat transfer coefficients on each side of the cube and the pressure loss coefficients are presented; correlations for the average heat transfer coefficient on the cube and the pressure loss coefficients are created.
Place, publisher, year, edition, pages
ASME International , 2008. Vol. 130, no 12, 121401-121413 p.
electronics cooling, impinging jet, CFD, RSM
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-16851DOI: 10.1115/1.2969266ISI: 000262842200004OAI: oai:DiVA.org:liu-16851DiVA: diva2:174395