Normal Shock Interaction with a Turbulent Boundary Layer on a Curved Wall,
Abstract
A detailed analysis is made of longitudinal surface curvature effects on the interaction of a weak normal shock with a non-separating two-dimensional turbulent boundary layer. It is shown that the interactive viscous displacement effect on the local outer inviscid transonic flow completely eliminates the well-known singularity pertaining to purely inviscid flow on a curved wall, i.e., the interactive pressure field is regular behind the shock. A study of the inner interaction solution within the boundary layer, however, reveals that curvature can influence the interaction but for a hitherto-overlooked reason: the effect on the turbulent eddy viscosity, which alters the boundary layer profile shape upon which the interaction depends. An approximate nonasymptotic solution is given which incorporates this effect and example numerical results are presented and verified by comparison with experimental data. Small amounts of curvature are found to moderately spread out and thicken the interaction zone while also beneficially delaying the onset of any incipient separation that occurs under the shock foot.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1978
- Accession Number
- ADA062353
Entities
People
- George R. Inger
- H. Sobieczky
Organizations
- Virginia Tech