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Heat Transfer Research
Fator do impacto: 0.404 FI de cinco anos: 0.8 SJR: 0.264 SNIP: 0.504 CiteScore™: 0.88

ISSN Imprimir: 1064-2285
ISSN On-line: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.v32.i1-3.120
7 pages

The Interaction of a Liquid Nitrogen Jet with a Surface in Boiling

Guenrikh A. Dreitser
Department of Aviation-Space Thermal Techniques, Moscow Aviation Institute, Volokolamskoe shosse, 4, Moscow, 125993, Russia
V. P. Firsov
Moscow Aviation Institute (Technical University), Moscow, Russia
I. V. Antyukhov
Moscow Aviation Institute (Technical University), Moscow, Russia
D. A. Morozov
Moscow State Aviation Institute (Technical University), Russia

RESUMO

The work presents the results of experimental investigation of heat transfer in interaction of a liquid nitrogen jet 3 mm and 4 mm in diameter (the jet velocity is from 1.5 m/sec to 16.5 m/sec, the angle of flow impingement is 90°C) with a preliminarily heated (up to 450 K) copper and steel surface. The temperature of the liquid in the experiment was maintained equal to 77.4 K at atmospheric pressure. The results of visual observations showed that a jet before its incidence on a surface is continuous and the region of the interaction of the jet with a surface is stable and forms a spot of contact of diameter from one to five diameters of the jet.


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