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Publication

Experimental characterization and model validation of liquid jet impingement cooling using a high spatial resolution and programmable thermal test chip

Journal Contribution - Journal Article

High efficiency direct liquid jet impingement cooling with locally distributed outlets is very promising in high power electronic devices. In order to elucidate the flow-thermal interaction for micro-scale jet impingement cooling, sensitive temperature measurements with high spatial and temporal resolution are required. In this work, a programmable thermal test chip with 832 heater cells with 75% heater uniformity and 3232 array of temperature sensors is introduced. The detailed measured temperature maps for different power dissipation patterns allow the in-depth study of the thermal performance of liquid jet impingement coolers and the detailed experimental validation of complex CFD models. The modeling and measurement study is applied to two jet impingement cooling implementations: 1) a single jet cooler with a 2 mm diameter nozzle, and 2) a multi-jet cooler with a 4×4 array of 500 µm inlet nozzles and distributed outlet nozzles. For both cooler configurations, the temperature measurements and CFD modeling results are investigated and compared for uniform and hot spot power dissipation patterns.
Journal: Applied Thermal Engineering
ISSN: 1359-4311
Volume: 152
Pages: 308 - 318
Publication year:2019
BOF-keylabel:yes
IOF-keylabel:yes
BOF-publication weight:3
CSS-citation score:2
Authors from:Government, Higher Education
Accessibility:Open