Accession Number:

ADP013701

Title:

Large Eddy Simulation of a Supersonic Cavity Flow with an Unstructured Grid Flow Solver

Descriptive Note:

Conference paper

Corporate Author:

LOCKHEED MARTIN AERONAUTICS CO FORT WORTH TX

Personal Author(s):

• Smith, Brian R.

Report Date:

2001-08-01

Pagination or Media Count:

8.0

Abstract:

Large Eddy Simulation methods were implemented in a hexahedral based unstructured grid flow solver and tested for the analysis of transonic flow over an open cavity. This approach was developed for efficient application of Computational Fluid Dynamics methods to the highly unsteady flows in a geometrically complex weapons bay. A compressible sub grid scale model was implemented. The compressible flow solver uses an upwind flux difference splitting scheme. A Mach 1.2 flow over an open cavity was simulated. Comparisons of computed and experimental spectra of the sound pressure level at several locations in the cavity are presented. Good agreements between the simulations and test were obtained.

Descriptors:

• *EDDIES(FLUID MECHANICS)
• *COMPUTATIONAL FLUID DYNAMICS
• SYMPOSIA
• SCALE MODELS
• DIFFERENCE EQUATIONS
• CAVITIES
• COMPRESSIBLE FLOW
• FLOW FIELDS
• UNSTEADY FLOW
• SOUND PRESSURE
• TRANSONIC FLOW

Subject Categories:

• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE