Shear viscosity of Gaussian overlap fluid

RAKESH RANJAN¹, MADAN KUMAR CHOUDHARY¹ and TARUN KUMAR DEY

¹Department of Chemistry, CGI College, Muzaffarpur - 842 001 (India). Post Graduate Department of Physics, L.S. College, Muzaffarpur - 842 001 (India).

Received on August 08, 2009 and accepted on October 15, 2009

ABSTRACT

Using perturbation theory for the molecular fluid to determine the effective hard sphere diameter and obtain expression for radial distribution function (RDF) of the hard sphere (HS) fluid. Shear viscosity of the molecular fluid are expressed in terms of the HS fluid of properly chosen hard sphere diameter. The shear viscosity µs of a dense HS fluid are obtained by the Revised Enskog theory (RET). Theory is applied to calculate shear µs of fluid N2. The theory provides good results at low density limit.

Keywords : Shear viscosity, radial distribution function, molecular fluid