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contributor authorC. J. Hendricks
contributor authorJ. A. Brighton
date accessioned2017-05-08T22:59:01Z
date available2017-05-08T22:59:01Z
date copyrightMarch, 1975
date issued1975
identifier issn0098-2202
identifier otherJFEGA4-26866#51_1.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/87692
description abstractMixing of a turbulent jet with a coaxial slower-moving secondary stream in a constant diameter tube was investigated. Of special interests were the effects of swirling the jet and initial turbulence kinetic energy. The analysis involved a numerical solution of the governing flow equations which were simplified by the Prandtl boundary layer assumptions. The two unknown turbulent stresses in the flow equations were modeled by defining an isotropic effective viscosity. The effective viscosity was calculated from a two-equation model of turbulence. The turbulence model was modified for swirling flows. Predicted results were compared with experimental results of several investigators. Good agreement was obtained when calculated results were compared with mean velocity and wall pressure data. The addition of swirl to the jet increased the rate of spread of the jet and resulted in decreasing the axial length required for mixing. The initial turbulence levels of the streams were found to have a significant effect on the distribution of mean velocity and pressure. This dependence has not been considered by most investigators and makes it imperative that experimentalists include turbulence information in their presentation of results.
publisherThe American Society of Mechanical Engineers (ASME)
titleThe Prediction of Swirl and Inlet Turbulence Kinetic Energy Effects on Confined Jet Mixing
typeJournal Paper
journal volume97
journal issue1
journal titleJournal of Fluids Engineering
identifier doi10.1115/1.3447215
journal fristpage51
journal lastpage59
identifier eissn1528-901X
keywordsTurbulence
keywordsKinetic energy
keywordsEquations
keywordsSwirling flow
keywordsViscosity
keywordsPressure
keywordsFlow (Dynamics)
keywordsStress AND Boundary layers
treeJournal of Fluids Engineering:;1975:;volume( 097 ):;issue: 001
contenttypeFulltext


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