Accession Number:
AD0276455
Title:
DIFFUSION IN EXPANDING ELECTRICALLY NEUTRAL GASES WITH LARGE PRESSURE GRADIENTS. PART II. SHOCK TUBE FLOW USING GAS MIXTURES IN THE COMPRESSION CHAMBER
Descriptive Note:
Corporate Author:
FRANKFORD ARSENAL PHILADELPHIA PA PITMAN-DUNN RESEARCH LABS
Personal Author(s):
Report Date:
1962-03-01
Pagination or Media Count:
1.0
Abstract:
The mathematical model developed in Part I AD- 274 781 is evaluated for theoretical shock tube flow. A brief review of the theory for ideal shock tube flow is presented regarding notation and terminology. Then, a diffusion equation is used to determine the transient composition within the expanding compression chamber gas. Numerical calculations are made for argon-helium mixtures and nitrogen-helium mixtures. The result is that composition changes of the order 1 of the initial composition are predicted. Relationships between the magnitude of the composition changes, diaphragm pressure ratio, and initial composition are presented graphically for use in experimental studies. Author