NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Potential energy curves and collision integrals of air componentsCollision integrals are fundamental quantities required to determine the transport properties of the environment surrounding aerospace vehicles in the upper atmosphere. These collision integrals can be determined as a function of temperature from the potential energy curves describing the atomic and molecular collisions. Ab initio calculations provide a practical method of computing the required interaction potentials. In this work we will discuss recent advances with an emphasis on the accuracy that is obtainable. Results for interactions, e.g. N+N, N+O, O+O, and H+N2 will be reviewed and their application to the determination of transport properties, such as diffusion and viscosity coefficients, will be examined.
Document ID
20020034905
Acquisition Source
Ames Research Center
Document Type
Preprint (Draft being sent to journal)
Authors
Partridge, Harry
(NASA Ames Research Center Moffett Field, CA United States)
Stallcop, James R.
(NASA Ames Research Center Moffett Field, CA United States)
Levin, Eugene
(Thermoscience Inst. Moffett Field, CA United States)
Langhoff, Stephen R.
Date Acquired
August 20, 2013
Publication Date
January 1, 1995
Subject Category
Geophysics
Meeting Information
Meeting: Molecular Physics and Hypersonic Flows
Location: Maratea
Country: Italy
Start Date: May 21, 1995
End Date: June 3, 1995
Sponsors: NATO Advanced Study Inst.
Funding Number(s)
PROJECT: RTOP 232-01-04
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Available Downloads

There are no available downloads for this record.
No Preview Available