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Comparison of several turbulence models for predicting flow patterns within confined jets
Author(s) -
Tennankore K. N.,
Steward F. R.
Publication year - 1978
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450560604
Subject(s) - turbulence , turbulence kinetic energy , k epsilon turbulence model , kinetic energy , mechanics , mixing (physics) , isothermal process , physics , k omega turbulence model , jet (fluid) , statistical physics , flow (mathematics) , turbulence modeling , thermodynamics , classical mechanics , quantum mechanics
Numerical solutions of the differential equations governing isothermal and nonisothermal confined jets have been obtained for three different models of the turbulence correlation terms. The models used were 1) mixing length model 2) k‐l model 3) k‐e model A comparison of the predictions with experimental data taken in a confined jet system indicates that in the absence of a measured distribution of the kinetic energy of turbulence at the entrance section the mixing length model provided the best results for the isothermal case. For the nonisothermal jets, however, it was found that the k‐e model gives better prediction than the other two models in spite of the lack of measured distributions for the kinetic energy of turbulence at the entrance.