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Mathematical modelling of three-dimensional heated surface jets

Published online by Cambridge University Press:  19 April 2006

J. J. McGuirk  and
W. Rodi
J. J. McGuirk
Affiliation:
Sonderforschungsbereich 80, University of Karlsruhe, Germany Present address: Department of Chemical Engineering, Imperial College, London.
W. Rodi
Affiliation:
Sonderforschungsbereich 80, University of Karlsruhe, Germany
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Abstract

A new economical finite-difference method is described for the calculation of three-dimensional heated surface jets discharging into stagnant water. The equations solved are for continuity, lateral and longitudinal momentum, and thermal energy. The turbulent shear stresses and heat fluxes in these equations are determined with a turbulence model involving simplified forms of the transport equations for these stresses and fluxes and the solution of differential transport equations for the turbulent kinetic energy κ and the rate of its dissipation ε. The experimentally observed entrainment reduction due to buoyancy is reproduced by this model. The predictions are compared in detail with the recent measurements of Pande & Rajaratnam, which are judged to be superior to those of other investigators. The agreement is generally satisfactory.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 95 , Issue 4 , 27 December 1979 , pp. 609 - 633
Copyright
© 1979 Cambridge University Press

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