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The Effect of Nozzle Diameter on Heat Transfer to a Fully Developed Round Impinging Jet
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 Title & Authors
The Effect of Nozzle Diameter on Heat Transfer to a Fully Developed Round Impinging Jet
Lee, Dae-Hee; Won, Se-Youl; Lee, Young-Min; Cho, Heon-No;
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 Abstract
The effect of nozzle diameter on the local Nusselt number distributions has been investigated for an axisymmetric turbulent jet impinging on the flat plate surface. The flow at the nozzle exit has a fully developed velocity profile. A uniform heat flux boundary condition at the plate surface was created using gold film Intrex. Liquid Crystal was used to measure the plate surface temperature. The experiments were made for the jet Reynolds number (Re) 23,000, the dimensionless nozzle to surface distance (L/d) from 2 to 14, and the nozzle diameter (d) from 1.36 to 3.40 cm. The results show that the Nusselt number at and near the stagnation point increase with an increasing value of the nozzle diameter.
 Keywords
Impinging Jet;Nozzle Diameter Effect;Nusselt Number;Liquid Crystal;Uniform Heat Flux;Gold Film Intrex;
 Language
Korean
 Cited by
1.
충돌제트를 이용한 Pedestal 형상의 칩 냉각연구,이대희;이준식;정영석;정승훈;

대한기계학회논문집B, 2003. vol.27. 1, pp.1-8 crossref(new window)
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