Accession Number:

ADA210402

Title:

Computation of Transonic Flow About Stores

Descriptive Note:

Final rept. Jun 1984-Sep 1988

Corporate Author:

MISSISSIPPI STATE UNIV MISSISSIPPI STATE DEPT OF AEROSPACE ENGINEERING

Personal Author(s):

• Whitfield, David L.
• Thompson, Joe F.

Report Date:

1989-06-01

Pagination or Media Count:

56.0

Abstract:

The objective of this program was to derive grid generation and fluid flow algorithms to predict the aerodynamics of aircraftweapon configurations. Both captive carriage and the launch transient mode were considered in the design of the methods. The numerical grid generation techniques developed were both algebraic, based on transfinite interpolation, and elliptic, based on iterative solution of partial differential equations. The techniques were incorporated into one code that became the numerical grid generation for the Eglin Arbitrary Geometry Implicit Euler EAGLE code. In addition, an adaptive version of the grid generation code was developed and applied to missile configurations. The flow solvers developed were all upwind, finite volume schemes ranging from explicit, split-flux vector to implicit, split-flux difference algorithms. Both steady and unsteady, Euler and Navier-Stokes, were written and applied to various configurations. Two implicit algorithms were employed to form the EAGLE flow solver code. This code was run on complex aircraftweapon configurations, including the launch transient problem of a weapon releasing from an aircraft pylon.

Descriptors:

• *EXTERNAL STORE SEPARATION
• *TRANSONIC FLOW
• *FLUID DYNAMICS
• *BOUNDARY LAYER FLOW
• *EXTERNAL STORES
• AERODYNAMICS
• FLUID FLOW
• NAVIER STOKES EQUATIONS
• CONFIGURATIONS
• COMPUTER PROGRAMMING
• WEAPON SYSTEMS
• ALGORITHMS

Subject Categories:

• Aerodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE