Two Approaches for the Prediction of Plume-Induced Separation
Abstract
A comparison with available measured data of the numerically predicted location of plume-induced separation on the afterbody of a bluff-base missile configuration at supersonic speed. A modified version of the implicit, three-dimensional Pulliam-Steger thin-layer Navier-Stokes code was used. The principal modification is the coupling of an inviscid algorithm to the viscous method to overcome the nozzle-lip difficulty encountered with highly underexpanded nozzles. This modification allowed the relatively easy computation of the interaction resulting from jet-to-free stream static pressure ratios through fifteen. In comparison with the measured data, the predictions of the separation locations are very good through a pressure ratio of 9.2. At a pressure ratio of fifteen, the method underpredicted the extent of separation. Keywords: Separation, Navier-Stokes equations, and Computational fluid dynamics.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1985
- Accession Number
- ADA154098
Entities
People
- J. H. Fox
Organizations
- Arnold Engineering Development Complex