A numerical investigation was performed at two Reynolds numbers to analyze the flow-field and heat transfer characteristics for a pair of laminar jets impinging on opposite walls in a channel. The present study is a continuation of the authors’ earlier work [1] in which the jets flowing out normal to the top channel wall produce a large stagnant bubble between the two jets which greatly reduce the heat transfer removal from the lower wall. In this case, the lower Reynolds number jet flow of 300 produces a symmetric, steady flow hydrodynamic pattern with the jets being deflected laterally. By further increasing the Reynolds number to 750, a complex asymmetric and highly unsteady flow develops between the two jets due to the opposite jet flow interaction. The convective heat transfer coefficients and the unsteady flow development between the jets are studied for each case. The flow unsteadiness is also characterized by analyzing the stagnation point displacement on the channel walls. The complex vortex patterns resulting from the jet interaction at the higher Reynolds number is investigated and its impact on the chip/microelectronics component cooling is thoroughly documented. This paper was also originally published as part of the Proceedings of the ASME 2005 Heat Transfer Summer Conference.
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ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems collocated with the ASME 2005 Heat Transfer Summer Conference
July 17–22, 2005
San Francisco, California, USA
Conference Sponsors:
- Heat Transfer Division and Electronic and Photonic Packaging Division
ISBN:
0-7918-4200-2
PROCEEDINGS PAPER
The Cooling Impact of a Pair of Opposed Unsteady Confined Impinging Air Jets Available to Purchase
Victor Chiriac,
Victor Chiriac
Freescale Semiconductor, Inc., Tempe, AZ
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Jorge L. Rosales
Jorge L. Rosales
Phoenix Analysis & Design Technologies, Tempe, AZ
Search for other works by this author on:
Victor Chiriac
Freescale Semiconductor, Inc., Tempe, AZ
Jorge L. Rosales
Phoenix Analysis & Design Technologies, Tempe, AZ
Paper No:
IPACK2005-73310, pp. 461-467; 7 pages
Published Online:
March 4, 2009
Citation
Chiriac, V, & Rosales, JL. "The Cooling Impact of a Pair of Opposed Unsteady Confined Impinging Air Jets." Proceedings of the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems collocated with the ASME 2005 Heat Transfer Summer Conference. Advances in Electronic Packaging, Parts A, B, and C. San Francisco, California, USA. July 17–22, 2005. pp. 461-467. ASME. https://doi.org/10.1115/IPACK2005-73310
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