Abstract
A numerical analysis has been performed for the laminar mixed convection in the entrance region of a horizontal fully porous channel (i.e., where all walls are porous). Both constant wall temperature and constant wall heat flux thermal boundary conditions are considered. The flow depends on four independent parameters: Prandtl number (Pr), Reynolds number (Re), wall suction Reynolds number (Rew), and Grashof number (Gr). A vorticity-velocity method along with the power law scheme is employed in the present numerical analysis. A coordinate transformation technique is used to handle the far downstream boundary condition. The effects of wall suction and buoyancy on heat transfer and fluid flow are examined. The velocity profile, friction factor, and Nusselt number are presented as functions of axial position. They are seen to be strongly affected by the wall suction and buoyancy. When buoyancy is strong enough, flow reversal is observed. Comparisons with existing theoretical results are also presented.
| Original language | English |
|---|---|
| Pages (from-to) | 9 |
| Number of pages | 9 |
| Journal | American Society of Mechanical Engineers (Paper) |
| Publication status | Published - 1995 |
| Externally published | Yes |
| Event | Proceedings of the 1995 ASME International Mechanical Engineering Congress & Exposition - San Francisco, CA, USA Duration: 12 Nov 1995 → 17 Nov 1995 |
ASJC Scopus subject areas
- Mechanical Engineering