Accession Number:

ADA394719

Title:

On Steady Laminar Basic Flows and Their Global Eigenmodes: An Elliptic Cone in Compressible Flow

Descriptive Note:

Final rept.

Corporate Author:

VASSILIOS (THEOFILIS) GOTTINGEN (GERMAN

Personal Author(s):

Report Date:

2000-10-31

Pagination or Media Count:

95.0

Abstract:

The present report is the first step towards global linear instability analysis of three-dimensional flowfields over elliptic cones at hypersonic speeds. The report discusses basic flows which form the variable coefficients of the partial differential equation eigenvalue problem at a small representative class of the parameter values at which the analyses will ultimately be performed. The report illustrates characteristic compressible flowfields recovered at constant Reynolds number and increasing angle of attack and Mach number, keeping for the most part of this work the same resolution of three-dimensional space. The contract tasking states The contractor will perform a three-dimensional inviscid analysis of the nonparallel steady compressible basic flow over an elliptic cone. A Compressible direct numerical simulation DNS code will be developed. The work will show a comparison between the basic flow results obtained with experimental and independently obtained results. The deliverables are the steady-state flow results and the code used to obtain them.

Subject Categories:

  • Numerical Mathematics
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE