A numerical study of laminar axisymmetric plumes due to the combined buoyancy of heat and mass diffusion
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This paper presents the results of a computational study of laminar axisymmetric plumes generated by the simultaneous diffusion of thermal energy and chemical species. Species concentrations are assumed small. The plume is treated as a boundary layer. Boussinesq approximations are incorporated and the governing conservation equations of mass, momentum, energy and species are suitably non-dimensionalised. These equations are solved using one time-step-forward explicit finite-difference method. Upwind differencing is employed for convective terms. The results thus obtained are explained in terms of the basic physical mechanisms that govern these flows. They show many interesting aspects of the complex interaction of the two buoyant mechanisms.
- J.C. Mollendorf and B. Gebhart, Axisymmetric natural convection flows resulting from the combined buoyancy effects of thermal and mass diffusion, Proc. 5th Int. Heat Transfer Conference, Tokyo, Paper No. CT 1.3 (1974).
- B. Gebhart and L. Pera, The nature of vertical natural convection flows resulting from the combined buoyancy effects of thermal and mass diffusion, Int. J. Heat Mass Transfer 14 (1971) 2025.
- J. Srinivasan and D. Angirasa, Numerical study of double-diffusive free convection from a vertical surface, Int. J. Heat Mass Transfer (1988), in press.
- L. Pera and B. Gebhart, Natural convection flows adjacent to horizontal surfaces resulting from the combined buoyancy effects of thermal and mass diffusion, Int. J. Heat Mass Transfer 15, (1972) 269.
- D. Angirasa and J. Srinivasan, Natural convection flows due to the combined buoyancy of heat and mass diffusion in a thermally stratified medium, submitted to Trans. ASME, J. Heat Transfer, Paper no. 87-F-445.
- D.A. Anderson, J.C. Tannehill and R.H. Pletcher, Computational Fluid Mechanics and Heat Transfer, Hemisphere, Washington/McGraw-Hill, New York (1984).
- P.J. Roache, Computational Fluid Dynamics, rev. edn., Hermosa, Albuquerque (1982).
- T. Fujii, Theory of steady laminar convection above a horizontal line source and a point heat source, Int. J. Heat Mass Transfer 6 (1963) 597.
- A numerical study of laminar axisymmetric plumes due to the combined buoyancy of heat and mass diffusion
Applied Scientific Research
Volume 45, Issue 4 , pp 339-352
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