Geometric Scale of Interaction between Moving Shock and Stationary Thermal Layer
Abstract
An analytical model is presented for estimating the streamwise length of the steady state separation bubble induced by the interaction of a shock moving with constant speed over a thin thermal (high sound speed) layer. In the case of a thermal layer of semi-infinite extent, the steady solution represents the asymptotic limit of an initially unsteady interaction. The streamwise length of the separation bubble is found by equating mass flow into the bubble to the mass flow removed by the wall boundary layer. Numerical results are presented for a variety of shock speeds, thermal layer heights, and thermal layer sound speeds. The present study indicates the importance of viscous effects on precursor development and provides a method for modifying the wall boundary condition in inviscid numerical codes in order to include the effect of the wall boundary layer on the inviscid flow field.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1989
- Accession Number
- ADA217769
Entities
People
- H. Mirels
Organizations
- The Aerospace Corporation