Fully developed combined heat and mass transfer natural convection between parallel plates with asymmetric boundary conditions
An analysis of fully developed flow between parallel plates is presented for combined heat and mass transfer natural convection with asymmetric boundary conditions. Closed form solutions are obtained for uniform wall temperature and concentraction (UWT/C) and uniform heat and mass fluxes (UH/MF). For UWT/C, the solution is independent of Prandtl, Schmidt and Grashof numbers. For UH/MF, an analytical solution can be obtained only for equal Prandtl and Schmidt numbers. By assuming a purely parabolic velocity profile, an approximate solution for general Prandtl and Schmidt number is obtained that reduces to the analytical solution as a special case. The channel flow rate decreases in proportion to the square root of the Grashof number and depends on the Prandtl and Schmidt numbers as well as the boundary conditions. The highest Nusselt and Sherwood numbers occur for asymmetric boundary conditions, opposite of the results for forced convection duct flows.
- OSTI ID:
- 5747764
- Report Number(s):
- CONF-851125-
- Country of Publication:
- United States
- Language:
- English
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Combined heat and mass transfer natural convection between parallel plates
Related Subjects
420400* -- Engineering-- Heat Transfer & Fluid Flow
ABSTRACTS
ANALYTICAL SOLUTION
ASYMMETRY
BOUNDARY CONDITIONS
COMPARATIVE EVALUATIONS
CONVECTION
DOCUMENT TYPES
ENERGY TRANSFER
FLOW RATE
FORCED CONVECTION
GRASHOF NUMBER
HEAT FLUX
HEAT TRANSFER
LEADING ABSTRACT
MASS TRANSFER
MEETINGS
NATURAL CONVECTION
NUSSELT NUMBER
PLATES
PRANDTL NUMBER
TEMPERATURE MEASUREMENT
VELOCITY
WALLS