vol14no3pa9

References

[1] Bejan, A., ” Convection heat transfer “, Wileye, New York, Chapter 10. 1984

[2] Kaviany, M., ” Laminar Flow Through a Porous Channel Bounded By Isothermal Parallel Plate”, Int.J.H.M.T, Vol. 28, No. 4, pp. 851-858, .1985

[3] Poulikakos, D., and Renken, K., ” Forced convection in a Channel Filled with Porous Medium, Including The Effect of Flow Inertia, Variable porosity , and Brinkman Friction”, ASME J.H.T, Vol. 109, pp .1987 ,880-888

[4] AL-Namr,M,A,et al,”Transient Forced Convection in the Entrance Region of a porous Tube”,The Candian J. of Chemical Eng. vol 72.pp .1994 ,249-255

[5] Chou,F.C. et al, “A Re-evaluation of Non-Darcian Forced and Mixed Convection in cylindrical Packed Tube” ASME J.H.T. vol.116, pp. .1994 ,513-516 

Tikrit Journal of Engineering Sciences (2007) 14(3) 42-60

Transient Forced Convection Laminar Heat Transfer for Tube Filled With Porous Media in the Entrance Region

Atalah H. Jasim Tahseen A. Tahseen Sherzad M. Ali
Mechanical Eng. Dept., Tikrit University, Iraq Mechanical Eng. Dept., Sulamany University, Iraq

Abstract

A theoretical study was carried out for transient heat transfer forced convection through horizontal tube filled with porous media. All the properties of the porous media are assumed to be constant in both the radial and axial directions. The governing equations are momentum and energy equation. These were formulated in using polar coordinates system. The results obtained are for three values of the effective Prandtl numbers and dimensionless pressure gradients. Theses gradient are (0.1,0.3,0.9) Pre ,(103 ,104 ,105 )B. The study proved that the thickness of the thermal boundary layer and its length depend on the parameter (B) and the effective Prandtl number. The thickness of the thermal boundary layer began with an increase starting from the front edge (inter section) until the thickness becomes equal to the radius of tube. The increase in Prandtl number gives an increase in the thickness of the thermal boundary layer for the same pressure gradient.

Download Full-text PDF

KeywordsForced Convection, Laminar, Tube, Porous Media, Transient State.

How to cite

TJES: Jasim AH, Tahseen AT, Ali SM. Transient Forced Convection Laminar Heat Transfer for Tube Filled With Porous Media in the Entrance RegionTikrit Journal of Engineering Sciences 2007; 14(3): 42-60.
APA: Jasim, A. H., Tahseen, A. T., & Ali, S. M. (2007). Transient Forced Convection Laminar Heat Transfer for Tube Filled With Porous Media in the Entrance Region. Tikrit Journal of Engineering Sciences, 14(3), 42-60.