A general purpose analytical expression for collision integrals, up to (l, s) = (4,4), of non-reactive interactions between heavy particles is proposed. The expression has been obtained from the classical cross section calculation for a model potential depending on few parameters, related directly to physical properties of the interacting particles. The fitting function has been verified in the temperature range 10(2) to 10(5) K making these collision integrals suitable for Chapman-Enskog calculations of complex mixtures in high enthalpy fluid dynamics. Parameter values for all the relevant interactions in I I species air model have been reported. (C) 2007 Elsevier B.V. All rights reserved.
|Autori interni:||CELIBERTO, Roberto|
|Titolo:||Classical transport collision integrals for a Lennard-Jones like phenomenological model potential|
|Rivista:||CHEMICAL PHYSICS LETTERS|
|Data di pubblicazione:||2007|
|Digital Object Identifier (DOI):||10.1016/j.cplett.2007.07.097|
|Appare nelle tipologie:||1.1 Articolo in rivista|