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Showing papers by "Daniel Tondeur published in 1988"


Journal ArticleDOI
TL;DR: In this paper, a general transition type for isothermal monovariant systems (one adsorbable component in inert gas or two components with no inert gas) is defined, and several examples are given to illustrate the determination of transition types for simple waves, contact discontinuities, shocks and combined waves.
Abstract: In fixed-bed adsorption or desorption of gases, velocity variations accompany changes in gas composition, and these variations affect the transition types (spreading waves or shocks). A general criterion is developed for determining the transition type for isothermal monovariant systems (one adsorbable component in inert gas or two adsorbable components with no inert gas). Several examples are given to illustrate the determination of transition types for simple waves, contact discontinuities, shocks, and combined waves.

48 citations


Journal ArticleDOI
TL;DR: In this article, it is shown that explicit equilibrium relations of the form y = F (x ) with more than two independent variables must obey complicated constraints on the higher-order derivatives of F, which are usually impractical to test.

4 citations