Local Convective Heat Transfer from Small Heaters to Impinging Submerged Axisymmetric Jets of Seven Coolants with Prandtl Number Ranging from 0.7 to 348-中国Betway体育网页登陆

摘要 Usingsevenworkingfluids,asystematicexperimentalstudywasperformedtoinvestigatethelocalconvectiveheattransferfromverticalheaterstoimpingingcircularsubmergedjetsintherangeofReynoldsnumberbetween1.17×10^2and3.69×10^4withtheemphasisplacedontheexaminationofPrandtlnumberdependence.Heattransfercoefficientsatthestagnationpointwerecollectedandcorrelatedwiththeplateheldwithinandbeyondthepotentialcore.Radialdistributionofthelocalheattransfercoefficientwasmeasuredwithfivetestliquids.Basedonthemeasuredprofilesofthelocalheattransfer,acorrelationwasdevelopedtocovertheentirerangeoftheadialdistance.Basidesthepresentdata,thecorrelationsdevelopedinthisworkwerealsocomparedwithalargequantityofavailabledataofcircularairjets.Generalagreementwasobservedbetweentheairdataandthecorrelations.

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Local Convective Heat Transfer from Small Heaters to Impinging Submerged Axisymmetric Jets of Seven Coolants with Prandtl Number Ranging from 0.7 to 348

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