Accession Number:

AD0415645

Title:

RELAXATION PHENOMENA AT A HIGH SPEED GAS FLOW,

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1963-04-15

Pagination or Media Count:

5.0

Abstract:

When solving the problem of gas dynamics it is frequently assumed that outer effects on the fl0 hange the state of the gas quite slowly, so that in each point sets in an equilibrium between various degrees of freedom of gas molecules. In fact the process of setting in an equilibrium requires a finite time, and it can be expected, that at sufficiently rapidly changing outer influences against the flow no equilibrium will be reached. The problem in this case becomes quite complicated because in the system of gas dynamics equations are added kinetic equations, describing the change in state of inert degrees of freedom of gas molecules. A simple approxi mate calculation method is offered to calculate the nonequilibrium of the flow, based on the fact, that in all instances of practical interest the flow appears to be locally close either to equilibrium, or to the frozen, wherby the zones of almost equilibrium and almost frozen flow are separated by a sufficiently lucid boundary. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE