DISCONTINUITY OF SURFACE CATALYCITY IN SHOCK TUBE FLOWS,
Abstract
Surface recombination of atoms on a perfectly catalytic surface element located downstream of a noncatalytic surface is analyzed behind a strong moving shock. The unsteady diffusion boundary layer is considered to be chemically frozen. The solution is obtained in a form of perturbations to the instantaneous steady state solution. The region in which the rate of surface reaction can be computed with a sufficient accuracy by use of the instantaneous steady state solution is determined. The application of the theory to the operation of differential catalytic gages located either on the shock tube wall or on a flat plate inserted into shock tube is discussed. It is shown that the sensitivity of the gages can be increased by 50 to 80% readily by utilizing the catalytic surface of the gages located downstream of a noncatalytic surface. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1963
- Accession Number
- AD0424915
Entities
People
- Paul M. Chung
- S. W. Liu
Organizations
- The Aerospace Corporation