Accession Number:

AD0601269

Title:

ESTIMATED PROPERTIES OF LAMINAR WAKES WITH COUPLED RATE CHEMISTRY AND DIFFUSION

Descriptive Note:

Corporate Author:

GENERAL APPLIED SCIENCE LABS INC WESTBURY NY

Report Date:

1962-09-18

Pagination or Media Count:

34.0

Abstract:

Theoretical analyses bearing on wake observables required a careful representation of the rate chemistry of air and its coupling with diffusive processes. A selection of preliminary results of recent calculations of laminar, constant-pressure axisymmetric wakes, including chemical-diffusive coupling made for several full-scale flight and firing range conditions is presented. The analysis employs an integral method wherein the governing differential equations are satisfied exactly along the axis. The present chemical and thermodynamical models which consider N2, N, O2, O, NO, NO-ion and electron species are more detailed than those usually used in connection with wake calculations. However, the following assumptions are retained a. vibrational equilibrium, b. Ficks law of diffusion for each species, c. a single representative Lewis number is taken constant and equal to 1.4, d. a constant value of the Prandtl number was taken as equal to 0.71.

Subject Categories:

  • Physical Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE