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ISSN 打印: 1064-2285
ISSN 在线: 2162-6561

传热学

DOI: 10.1615/HeatTransRes.v38.i4.30
pages 313-323

Modeling of Nucleate Boiling Heat Transfer in a Film Formed by an Impinging Jet

Jaroslaw Mikielewicz
Institute of Fluid-Flow Machinery, Polish Academy of Science, 80-952 Gdansk, ul. Fiszera 14, Poland
Dariusz Mikielewicz
Gdansk University of Technology, Faculty of Mechanical Engineering, 80-233 Gdansk, ul. Narutowicza 11/12, Poland
Danuta Barnik
Institute of Fluid-Flow Machinery PASci, ul. Fiszera 14, 80-952 Gdansk, Poland

ABSTRACT

A simple model of heat transfer for turbulent liquid films with nucleate boiling formed by impinging jets has been postulated. The case with a film developing outside the stagnation region is considered. In such a case the model is derived on the basis of a change in the film thickness due to inertia and friction forces. Incorporated into the model is a blowing parameter, which models the transverse transport of momentum caused by departing bubbles. Velocity and temperature distributions in the liquid film have been calculated, which enabled determination of the corresponding heat transfer coefficient and Nusselt number.


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