A comparison of modified K-ε turbulence models for buoyant plumes

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dc.contributor.author Worthy, Jude en_UK
dc.contributor.author Sanderson, V. E. en_UK
dc.contributor.author Rubini, Philip A. en_UK
dc.date.accessioned 2005-11-22T13:34:07Z
dc.date.available 2005-11-22T13:34:07Z
dc.date.issued 2001-02-01 en_UK
dc.identifier.citation Numerical Heat Transfer: Part B: Fundamentals, Taylor & Francis, Volume 39, Number 2 / February 1, 2001, p151 - 165 en_UK
dc.identifier.issn 1040-7790 en_UK
dc.identifier.uri http://hdl.handle.net/1826/877
dc.description.abstract The effect of buoyancy on the production and dissipation of turbulent kinetic energy is investigated in variants of the popular k- ε turbulence model. The standard gradient diffusion model is considered for the scalar flux as well as a generalised gradient diffusion model. Also, the addition of the non-isotropic component of an algebraic stress model for the Reynolds stresses is assessed. The relative significance of the various models and terms are demonstrated using different combinations of the models, including the important flux Richardson correction term. The generalised gradient diffusion and algebraic stress models are shown to give a strong increase in turbulence production, although the effect on the flow can be largely controlled by the coefficient of the flux Richardson term. Recommendations are made regarding optimum models and coefficients. en_UK
dc.description.uri http://dx.doi.org/10.1080/10407790150503486 en_UK
dc.format.extent 1944 bytes
dc.format.extent 265446 bytes
dc.format.mimetype text/plain
dc.format.mimetype application/pdf
dc.language.iso en_UK
dc.publisher Taylor and Francis en_UK
dc.title A comparison of modified K-ε turbulence models for buoyant plumes en_UK
dc.type Article en_UK

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