Abstract
The paper describes a computational fluid dynamics study of a single round turbulent buoyant jet discharging into neutral and stratified cross-flowing streams. Turbulence closure is effected using both two-equation eddy viscosity and second-moment closure transport models, with noticeable improvements in predictive accuracy for mean scalar dilution rates and plume trajectory and spreading resulting from the latter. An assumed shape pdf formulation, based on a β-function shape, is introduced to allow the model to predict instantaneous scalar behaviour. An empirical correction for intermittency has been incorporated. Comparison with measured scalar pdf shapes demonstrates that this approach can give reasonable predictions for the extremes of scalar values encountered in turbulent buoyant plumes.
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© 1994 Springer Science+Business Media Dordrecht
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Gosman, A.D., Liu, R., McGuirk, J.J. (1994). Prediction of Mean and Fluctuating Scalar Fields in Buoyant Jet in Cross-Flow Problems. In: Davies, P.A., Neves, M.J.V. (eds) Recent Research Advances in the Fluid Mechanics of Turbulent Jets and Plumes. NATO ASI Series, vol 255. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-0918-5_16
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DOI: https://doi.org/10.1007/978-94-011-0918-5_16
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-4396-0
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