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Mathematical models for impinging jets

 
: Zemitis, Aivars

:

Buikis, A.:
Progress in Industrial Mathematics at ECMI 2002 : Twelfth Conference of the European Consortium for Mathematics in Industry, ECMI 2002, Riga, Latvia
Berlin: Springer, 2004 (The European Consortium for Mathematics in Industry 5)
ISBN: 978-3-642-07262-8 (Print)
ISBN: 978-3-662-09510-2 (Online)
pp.399-403
Conference of the European Consortium for Mathematics in Industry (ECMI) <12, 2002, Riga>
English
Conference Paper
Fraunhofer ITWM ()

Abstract
In this paper are discussed mathematical models for the liquid film generated by impinging jets. These models describe only the film shape under special assumptions about processes. Attention is stressed on the interaction of the liquid film with some obstacle. The idea is to generalize existing models and to investigate qualitative behavior of liquid film using numerical experiments. G.I. Taylor [TaI59]-[TaIII59] found that the liquid film generated by impinging jets is very sensitive to properties of the wire which was used as an obstacle. The aim of this presentation is to propose a modification of the Taylor’s model, which allows to simulate the film shape in cases when the angle between jets is different from 180°. Numerical results obtained by discussed models give two different shapes of the liquid film similar as in Taylors experiments. These two shapes depend on the regime: either droplets are produced close to the obstacle or not. The difference between two regimes becomes larger if the angle between jets decreases. Existence of such two regimes can be very essential for some applications of impinging jets, if the generated liquid film can have a contact with obstacles.

: http://publica.fraunhofer.de/documents/N-473704.html