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COMPUTATIONAL STUDIES OF IMPINGING JETS USING K‐ϵ TURBULENCE MODELS
Author(s) -
KNOWLES K.
Publication year - 1996
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/(sici)1097-0363(19960430)22:8<799::aid-fld381>3.0.co;2-2
Subject(s) - turbulence , jet (fluid) , mechanics , nozzle , rotational symmetry , physics , computational fluid dynamics , finite volume method , classical mechanics , flow (mathematics) , thermodynamics
This paper reports numerical modelling of impinging jet flows using Rodi and Malin corrections to the k –ϵ 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.