Abstract
This article focuses on convective instabilities of throughflow in packed beds with internal heat sources. When a packed bed is heated with internal heat sources, the effects of throughflow on the onset conditions of convection have been examined numerically under the linear stability theory. The resulting conditions show that stationary instabilities occur at higher values of Darcy-Rayleigh number than the critical values as the amount of throughflow increases. The effects of free and rigid boundaries on the onset condition are also obtained for the Brinkman porous media with throughflow.
Article PDF
Avoid common mistakes on your manuscript.
References
Gasser, R. D. and Kazimi, M. S., “Onset of Convection in a Porous Medium with Internal Heat Generation”,ASME J. Heat Transfer,98, 49 (1976).
Gershuni, G. Z. and Zhukhovitskii, E. M., “Convective Stability of Incompressible Fluids”, Keter Publishing, Jerusalem (1976).
Homsy, G. M. and Sherwood, A. E., “Convective Instabilities in Porous Media with Throughflow”,AIChE J.,22, 168 (1976).
Horton, C. W. and Rogers, F. T., “Convection Currents in a Porous Medium”,J. Appl. Phys.,16, 367 (1945).
Jones, M. C. and Persichetti, J. M., “Convective Instability in Packed Beds with Throughflow”,AIChE J.,32, 1555 (1986).
Lapwood, E. R., “Convection of a Fluid in a Porous Medium”,Proc. Camb. Phil. Soc,44, 508 (1984).
Nield, D. A., “Convective Instability in Porous Media with Throughflow”,AIChE J.,33, 1222 (1987).
Rudraiah, N., Veerappa, B. and Balachandra, R. S., “Convection in a Fluid-Saturated Porous Layer with Non-Uniform Temperature Gradient”,Int. J. Heat Mass Transfer,25, 1147 (1982).
Wooding, R. A., “Rayleigh Instability of a Thermal Boundary Layer in Flow Through a Porous Medium”,J. Fluid Mech.,9, 183 (1960).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Yoon, DY., Kim, DS. & Choi, C.K. Convective instability in packed beds with internal heat sources and throughflow. Korean J. Chem. Eng. 15, 341–344 (1998). https://doi.org/10.1007/BF02707091
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02707091