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COMPUTATIONAL STUDIES OF IMPINGING JETS USING K-ϵ TURBULENCE MODELS

✍ Scribed by K. KNOWLES

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
667 KB
Volume
22
Category
Article
ISSN
0271-2091

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✦ Synopsis

This paper reports numerical modelling of impinging jet flows using Rodi and Malin corrections to the k -~ turbulence model, carried out using the PHOENICS finite volume code. Axisymmetric calculations were performed on single round free jets and impinging jets and the effects of pressure ratio, height and nozzle exit velocity profile were investigated numerically. It was found that both the Rodi and Malin corrections tend to improve the prediction of the hydrodynamic field of free and impinging jets but still leave significant errors in the predicted wall jet growth. These numerical experiments suggest that conditions before impingement significantly affect radial wall jet development, primarily by changing the wall jet's initial thickness.

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