DIFFUSION IN EXPANDING ELECTRICALLY NEUTRAL GASES WITH LARGE PRESSURE GRADIENTS. PART II. SHOCK TUBE FLOW USING GAS MIXTURES IN THE COMPRESSION CHAMBER

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)

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1962
Accession Number
AD0276455

Entities

People

  • D.j. Katsanis

Tags

DTIC Thesaurus Topics

  • Compression
  • Diffusion
  • Equations
  • Mathematical Models
  • Models
  • Nitrogen
  • Notation
  • Pressure Gradients
  • Shock Tubes
  • Skeletal Muscle
  • Tubes

Fields of Study

  • Physics

Readers

  • Combustion Dynamics and Shock Wave Physics.
  • Combustion and Flow Dynamics.
  • Combustion science or combustion engineering.