Accession Number:

AD0720251

Title:

Triple Collision Effects in the Thermal Conductivity and Viscosity of Moderately Dense Gases. Part 2

Descriptive Note:

Technical rept. 1 Sep 1968-31 Aug 1970

Corporate Author:

MARYLAND UNIV COLLEGE PARK INST FOR MOLECULAR PHYSICS

Report Date:

1971-03-01

Pagination or Media Count:

169.0

Abstract:

Calculations of transport properties of dilute gases are always based on the Boltzmann equation. The Boltzmann equation accounts only for the effects of collisions between two gas molecules. To predict transport properties of moderately dense gases one needs to determine the effects of collisions among more than two gas molecules. The report studies the contributions to the transport properties caused by collisions among three gas molecules. It is demonstrated that the first density correction to the transport properties can be represented by a series of collision integrals associated with one, two, three and four collisions between three gas molecules. Numerical studies for calculating the dominant collision integrals are made for a gas of hard spherical molecules.

Subject Categories:

  • Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE