A Fortran Computer Code Package for the Evaluation Ofgas - Phase , Multicomponent Transport

This report documents a Fortran computer code package that is used for the evaluation of gas-phase multicomponent viscosities, thermal conductivities, diiusion coeecients, and thermal diiusion coeecients. The package is in two parts. The rst is a preprocessor that computes polynomial ts to the temperature dependent parts of the pure species viscosities and binary diiusion coeecients. The coeecients of these ts are passed to a library of subroutines via a linking le. Then, any subroutine from this library may be called to return either pure species properties or multicomponent gas mixture properties. This package uses the chemical kinetics package CHEMKIN, and transport property subroutines are designed to be used in conjunction with the CHEMKIN subroutine library. This package supersedes a previously-written transport property code package in which we used certain mixture averaging rules to compute mixture properties rather than the full multicomponent formulation.