Heat and mass transfer by natural convection around a hot body in a rectangular cavity

The simultaneous heat and mass transfer by natural convection around ahot body in a rectangular cavity is investigated numerically. the cavity is lled withair and the ratio of body's length to enclosure's length is assumed to be constant at1/3. the dierential equations for continuity, momentum, energy and mass transfer aresolved using the patankar technique. the results are displayed in the form of isotherms,isoconcentrations and streamlines, and the eects of rayleigh number, lewis number andbuoyancy ratio on average sherwood and nusselt numbers are investigated. the studycovers a wide range of rayleigh numbers, lewis numbers, and buoyancy ratios. it isobserved that by increasing lewis number, the average sherwood number increases andthe average nusselt number decreases. additionally, by increasing the absolute value ofbuoyancy ratio, the average sherwood and nusselt numbers enhance. this work presents anovel approach in this eld in the light of geometry and the range of dimensionless numbers.