Influence of CuO/water nanofluid concentration and swirling flow on jet impingement cooling

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dc.contributor.authorWongcharee, K.
dc.contributor.authorChuwattanakul, V.
dc.contributor.authorEiamsa-ard, S.
dc.date.accessioned2026-08-06T10:17:41Z
dc.date.available2026-08-06T10:17:41Z
dc.date.issued2017-11-01
dc.description.abstractCuO/water nanofluids were applied in swirling impinging jets for heat transfer enhancement. Swirling flow was induced by twisted tape inserts with twist ratios (y/w) of 1.43, 2.86 and 4.28. Impinging jets were injected at three different ratios of jet-to-plate spacing to nozzle diameter (H/d) of 2, 3 and 4. Nanofluids with CuO concentrations of 2.0%, 3.0% and 4.0% by volume were comparatively tested with water (a base fluid) for Reynolds numbers ranging from 1600 to 9400. Experimental results reveal that the nanofluids with concentrations of 2.0 and 3.0% by volume yield higher Nusselt numbers than the base fluid while the one with concentration of 4.0% shows opposite result. At the ratio of jet-to-plate spacing/nozzle diameter (H/d) of 2, Nusselt number slightly increases with decreasing twist ratio (y/w). However, at the ratios of jet-to-plate spacing/nozzle diameter (H/d) of 3 and 4, Nusselt number increases with increasing twist ratio. Over the studied range, the optimum condition is found at H/d = 2, y/w = 1.43, and nanofluid concentration of 2.0% by volume.
dc.identifier.citationInternational Communications in Heat and Mass Transfer, 88, 277-283, 2017
dc.identifier.doi10.1016/j.icheatmasstransfer.2017.08.020
dc.identifier.issn07351933
dc.identifier.other2-s2.0-85029557832
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/7929
dc.sourceInternational Communications in Heat and Mass Transfer
dc.subjectCuO/water nanofluid
dc.subjectHeat transfer
dc.subjectSwirling impinging jet
dc.subjectTwisted tape
dc.titleInfluence of CuO/water nanofluid concentration and swirling flow on jet impingement cooling
dc.typeArticle

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