TRANSPORT-PROPERTIES OF PURE HARD BIAXIAL FLUIDS

The modified Taxman transport coefficient formulae have been obtained correctly up to the first approximation for a pure hard-ellipsoidal lo w-density fluid in terms of four-dimensional quadratures over the coor dinates of two interacting ellipsoidal molecules. In the appropriate l imits, these expressions reduce to the corresponding transport coeffic ient formulae for a spheroidal or a hard sphere (HS) system. The HS fo rmula for the thermal conductivity agrees with the modified Eucken for mula to the first approximation implying that the basic ingredients of the latter formula are embedded in our formulation. The various quadr atures have been computed for the ellipsoidal as well as spheroidal sy stems. The numerical results for the transport coefficient are present ed in the form of universal curves for each kind of model fluid as fun ctions of axial ratios of the molecules. It has been found that our th ermal conductivity work is superior to that of Mason and Monchick. (C) 1998 Elsevier Science B.V. All rights reserved.