ITEMS

modern scholarly publishers in the finest tradition

References

	Search

Annual Reviews of Heat Transfer

ISSN 1049-0787

Individual price:

$175.00 (Must be sent to your home address)

You can order single issue or individual article. To purchase a single issue or an individual article as well as to view tables of contents and abstracts click on issue number.

Institutional price:

$349.00

Volumes per year:

various

Year 1998

464 pages

Volume price - $141.00

MODELING OF COMBUSTION IN POROUS MEDIA

Massoud Kaviany
Department of Mechanical Engineering and Applied Mechanics, University of Michigan, Ann Arbor, MI 48109

ABSTRACT

In many applications involving porous permeable solids, gas-phase, surface-mediated, and/or condensed-phase reactions occurs. In exothermic reactions propagating as a front (i.e., combustion front), the front thickness and the extent of the chemical and thermal equilibria among the phases must be closely examined for the proper modeling. This is done here by considering some examples and by comparing the prediction of existing models with the results of direct simulations and experiments. These examples are, gas-phase reaction (premixed combustion in an inert porous medium), gas-solid reaction (flaming in reversed combustion), and a condensed-phase combustion (compacted powder combustion synthesis). In this review we examine the limits of the applicability of the volume-averaged models and models combining pore-level and volume-averaged treatments. Also addressed will be the suitability of the existing models that assume local chemical and thermal equilibria and nonequilibria among the phases.