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):

• KATSANIS,D.J.

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

Descriptors:

• *DIFFUSION
• *SHOCK TUBES
• *THERMODYNAMICS
• ARGON
• FLUID MECHANICS
• HELIUM
• IRREVERSIBLE PROCESSES
• MIXTURES
• NITROGEN
• TURBULENCE

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE