CaltechAUTHORS
  A Caltech Library Service

Nonequilibrium recombination after a curved shock wave

Wen, Chihyung and Hornung, Hans (2010) Nonequilibrium recombination after a curved shock wave. Progress in Aerospace Sciences, 46 (2-3). pp. 132-139. ISSN 0376-0421. http://resolver.caltech.edu/CaltechAUTHORS:20100412-083809478

[img] PDF - Published Version
Restricted to Repository administrators only
See Usage Policy.

466Kb

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:20100412-083809478

Abstract

The effect of nonequilibrium recombination after a curved two-dimensional shock wave in a hypervelocity dissociating flow of an inviscid Lighthill–Freeman gas is considered. An analytical solution is obtained with the effective shock values derived by Hornung (1976) [5] and the assumption that the flow is ‘quasi-frozen’ after a thin dissociating layer near the shock. The solution gives the expression of dissociation fraction as a function of temperature on a streamline. A rule of thumb can then be provided to check the validity of binary scaling for experimental conditions and a tool to determine the limiting streamline that delineates the validity zone of binary scaling. The effects on the nonequilibrium chemical reaction of the large difference in free stream temperature between free-piston shock tunnel and equivalent flight conditions are discussed. Numerical examples are presented and the results are compared with solutions obtained with two-dimensional Euler equations using the code of Candler (1988) [10].


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/j.paerosci.2009.11.001 DOIArticle
Additional Information:© 2009 Elsevier. Available online 5 December 2009. This work was supported by AFOSR Grant F49610-92-J-0110 (Dr. L. Sakell) and AFOSR Grant F49620-93-1-0338 (Dr. J. Tishkoff).
Group:GALCIT
Funders:
Funding AgencyGrant Number
Air Force Office of Scientific Research (AFOSR)F49610-92-J-0110
Air Force Office of Scientific Research (AFOSR)F49620-93-1-0338
Record Number:CaltechAUTHORS:20100412-083809478
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20100412-083809478
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:17926
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:26 Apr 2010 16:39
Last Modified:19 Sep 2016 17:53

Repository Staff Only: item control page