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dc.contributor.authorChu, Wen-Xiaoen_US
dc.contributor.authorChiou, Po-Hsiangen_US
dc.contributor.authorWang, Chi-Chuanen_US
dc.date.accessioned2020-03-02T03:23:27Z-
dc.date.available2020-03-02T03:23:27Z-
dc.date.issued2020-01-01en_US
dc.identifier.issn2156-3950en_US
dc.identifier.urihttp://dx.doi.org/10.1109/TCPMT.2019.2926406en_US
dc.identifier.urihttp://hdl.handle.net/11536/153737-
dc.description.abstractIn this paper, the impingement cooling performance on pin-fin heat sinks is experimentally and numerically investigated with different outlet arrangements and pin-fin layouts. Compared with one-way opening arrangement, results show that the two-way opening arrangement can offer a much lower pressure loss (Delta p) due to shorter flow distance of airflow from outer jets. Meanwhile, it is surprising that the two-way opening arrangement still offers appreciable improvements on effective heat transfer coefficient (h(eff)). This is because the fountain may shift toward the outer jets more rapidly with one-way opening arrangement. Yet the implementation of staggered pin-fin layout has minor improvement on h(eff) . However, Delta p can be obviously reduced by 11.1% due to the more effective spreading of impinging airflow in radial direction. The h(eff) value can be further increased by 8.8% when a smaller jet-to-target distance is applied. With priority consideration of hot spots in electronic cooling, the nonuniformity of local Nusselt number (S) is further studied through the computational fluid dynamics (CFD) method. S approaches 18.5% when the airflow directly impinges on a flat surface with optimized jet array. Implementing pin-fin heat sinks can reduce the nonuniformity of Nusselt number distribution to fall below 8.0%. The nonuniformity of local Nusselt number can be further reduced to 1.8% by applying four-way opening arrangement and larger central jet at the same time.en_US
dc.language.isoen_USen_US
dc.subjectComprehensive performanceen_US
dc.subjectimpingement coolingen_US
dc.subjectnonuniformityen_US
dc.subjectoutlet arrangementen_US
dc.subjectpin-fin heat sinken_US
dc.titleExperimental and Numerical Study Upon Uniformity of Impingement Cooling With Pin-Fin Heat Sinken_US
dc.typeArticleen_US
dc.identifier.doi10.1109/TCPMT.2019.2926406en_US
dc.identifier.journalIEEE TRANSACTIONS ON COMPONENTS PACKAGING AND MANUFACTURING TECHNOLOGYen_US
dc.citation.volume10en_US
dc.citation.issue1en_US
dc.citation.spage88en_US
dc.citation.epage98en_US
dc.contributor.department機械工程學系zh_TW
dc.contributor.departmentDepartment of Mechanical Engineeringen_US
dc.identifier.wosnumberWOS:000508385200012en_US
dc.citation.woscount0en_US
Appears in Collections:Articles