Skip to Main content Skip to Navigation
New interface
Journal articles

Conjugate Mixed Convection in a Horizontal Cylindrical Duct under the Solid Shell Internal Heat Generation

Abstract : This paper deals with three-dimensional, mixed convection in a cylindrical duct horizontally. This latter is partially subjected to a uniform volumetric heat generation at the solidliquid interface. The working fluid (water) with a parabolic velocity profile and a constant temperature T0 enters the tube. The study was carried out for different Richardson numbers values Ri=0.1-8 at Reynolds number Re=600. Results were conducted so that to show the influence of Richardson number Ri on the dynamic and thermal fields and local Nusselt number Nu(q,z) and peripherally averaged axial Nusselt number Nu(z). Also, analyses of the results showed that the hydrodynamic effects are manifested by the existence of secondary flow, inducing temperature gradient at a crosssection between the top and bottom of the duct. The reversed flow is observed for a low Reynolds number Re=10. A significant increase in heat exchange is observed in mixed convection compared to pure forced convection flow. Correlations for the variation of average Nusselt number Nu (Ri,z) at the entrance region with Ri and z=z¢/Di and local Nusselt Nu(Ri) number in the hydrodynamics establishment zone are proposed and compared with the present numerical results.
Document type :
Journal articles
Complete list of metadata
Contributor : Cherifa ABID Connect in order to contact the contributor
Submitted on : Tuesday, May 3, 2022 - 5:00:01 PM
Last modification on : Thursday, May 5, 2022 - 3:36:12 AM
Long-term archiving on: : Thursday, August 4, 2022 - 6:50:22 PM


Files produced by the author(s)


  • HAL Id : hal-03658267, version 1



Rachid Bessaih, Chérifa Abid. Conjugate Mixed Convection in a Horizontal Cylindrical Duct under the Solid Shell Internal Heat Generation. Journal of Applied and Computational Mechanics, 2021. ⟨hal-03658267⟩



Record views


Files downloads