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- W1976375329 abstract "Experiments were carried out on natural convection heat transfer from isothermal plates facing upwards in air in the range of Gr·Pr from 2 × 105 m̊to 109, Both the average and local heat transfer were determined. Plates of different shapes (square, rectangular and circular) were used and “corner” and “edge” effects were investigated. Dimensionless equations are suggested for the laminar and turbulent regions. Des expériences de transfert de chaleur par convection naturelle ont été effectuées dans l'air sur des plaques isothermes tournées vers le haut, pour un domaine de variation de Gr·Pr allant de 2.105 m̊à 109. Le transfert de chaleur local et le transfert moyen sont tous deux déterminés. Des plaques de formes différentes (carrées, rectangulaires et circulaires) ont été utilisées et les effets “d'angle” et de “bord” ont été analysés. On propose des équations adimensionnelles décrivant les régions laminaire et turbulente. Es wurden Versuche über den Wärmeübergang bei freier Konvektion an der Oberseite isothermer Platten mit Luft im Bereich von 2 × 105 < Gr · Pr < 109 durchgeführt. Sowohl der mittlere wie der lokale Wärmeübergang wurde bestimmt. Es wurden Platten verschiedener Form (quadratisch, rechteckig, kreisförmig) verwendet und der Ecken- und Seiteneinfluβ untersucht. Sowohl für den laminaren wie für den turbulenten Bereich werden dimensionslose Gleichungen vorgeschlagen. Пpoвeдeны экcпepимeнты пo пepeнocy тeплa пpи ecтecтвeннoй кoнвeкции oт изoтepмичecкич плacтин, c oднoй cтopoны oмывaeмыч вoздyчoм, в диaпaзoнe чиceл Gr — Pг oт 2 × 105 − 109. Oпpeдeлялиcь кaк cpeдниe, тaк и лoкaльныe кoэффициeнты пepeнoca тeплa. Иcпoльзoвaлиcь плacтины paзличнoй фopмы (квaдpaтныe, пpямoyгoльныe и кpyглыe) и иccлeдoвaлиcь ⪡yглoвыe⪢ и ⪡кpaeвыe⪢ эффeкты. Пpeдлoжeны бeзpaзмepныe ypaвнeния для лaминapнoй и тypбyлeнтнoй oблacтeй." @default.
- W1976375329 created "2016-06-24" @default.
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- W1976375329 date "1976-12-01" @default.
- W1976375329 modified "2023-09-26" @default.
- W1976375329 title "Natural convection heat transfer from isothermal horizontal plates of different shapes" @default.
- W1976375329 cites W1989729322 @default.
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- W1976375329 doi "https://doi.org/10.1016/0017-9310(76)90069-7" @default.
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