# Combined heat and mass transfer in mixed convection through a horizontal tube

Combined heat and mass transfer in mixed convection through a horizontal tube

Aicha BouhezzaOmar Kholai Saadoun Boudebous Zoubir Nemouchi

Département de Technologie, Faculté de Technologie, Université 20 Août 1955-Skikda,, Skikda 21000, Algeria

Département de Génie des Transports, Université des Frères Mentouri, Constantine 25000, Algeria

Département de Génie Mécanique, Faculté des Sciences et des Sciences Appliquées, Université Larbi Ben M’hidi Oum El Bouaghi, Oum El Bouaghi 04000, Algeria

LEAP, Département de Génie Mécanique, Université Frères Mentouri Constantine 1, Constantine 25000, Algeria

Corresponding Author Email:
kholai.omar@gmail.com
Page:
72-80
|
DOI:
https://doi.org/10.18280/ijht.360110
13 October 2017
|
Accepted:
24 November 2017
|
Published:
31 March 2018
| Citation

OPEN ACCESS

Abstract:

Laminar mixed convection heat and mass transfer in horizontal circular tube with uniform heat and mass fluxes at the walls on part of its length have been investigated numerically using a three - dimensional elliptic equations model. The effect of the Schmidt number and the buoyancy ratio N, on the development of the hydrodynamic, thermal and solutal fields and the axial evolution of the Nusselt and the Sherwood numbers are presented. These results showed that the Schmidt number has the highest effect on the flow rather than the Nusselt and Sherwood numbers. The Nusselt number and Sherwood number increase for positive N and decrease when N is negative.

Keywords:

heat transfer, mass transfer, mixed convection, schmidt number, horizontal tube (3D), elliptic equations

1. Introduction
2. Physical Model and Mathematical Formulation
3. Numerical Methods
4. Results and Discussion
5. Conclusions
Nomenclature
References

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