Journal
JOURNAL OF ELECTRONIC PACKAGING
Volume 128, Issue 1, Pages 82-91Publisher
ASME
DOI: 10.1115/1.2161426
Keywords
heat sink; convective heat transfer; slot jet impingement; Grashof number; jet Reynolds number; Nusselt number
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A series of experimental investigations oil the studies related to transient- and steady-state cooling performance from the horizontally heated heat sinks with a confined slot jet impingement have been conducted. The relevant parameters influencing the transient convective cooling performance include the steady-state Grashof number ratio of jet separation distance to nozzle width, ratio of heat sink height to nozzle width, and jet Reynolds number The transient heat transfer behaviors such as the temperature distribution, local and average Nusselt numbers on the heated heat sinks have been systematically explored. Two empirical correlations of steady-state local and average Nusselt numbers are presented. Furthermore, a complete composite correlation of steady-state average Nusselt number for mixed convection due to jet impingement and buoyancy is proposed. This empirical correlation obtained by data regression is in good agreement with the experimental data. The maximum and average regression errors are 7.46% and 2.87%, respectively.
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