Accession Number:

ADA288298

Title:

A Non-Iterative Grid Deformation Algorithm for Computational Fluid Dynamics for Aeroelasticity.

Descriptive Note:

Interim rept. Jun-Jul 94,

Corporate Author:

WRIGHT LAB WRIGHT-PATTERSON AFB OH

Personal Author(s):

• Synder, Richard D.

Report Date:

1994-09-01

Pagination or Media Count:

25.0

Abstract:

This Technical Memorandum presents an algorithm for deforming a two- or three-dimensional aerodynamic grid given deflections on a physical boundary. This algorithm is to be used in coupling a computational fluid dynamics code with a computational structural mechanics code. The deformation algorithm was tested successfully on both two- and three-dimensional grids. The method sufficiently maintalns grid quality for smooth deflections of realistic orders of magnitude. The method is computationally efficient the time required to deform the grid is small compared to the time required to solve the fluid dynamics.

Descriptors:

• *DEFORMATION
• *COMPUTATIONAL FLUID DYNAMICS
• *AEROELASTICITY
• AERODYNAMIC CONFIGURATIONS
• ALGORITHMS
• COMPUTATIONS
• TWO DIMENSIONAL
• STRUCTURAL MECHANICS
• COMPUTER PROGRAMMING
• DEFLECTION
• PROBLEM SOLVING
• BOUNDARIES
• CODING
• GRIDS(COORDINATES)
• THREE DIMENSIONAL
• SWEPT WINGS
• NONLINEAR DIFFERENTIAL EQUATIONS
• TRANSFORMATIONS(MATHEMATICS)
• FORTRAN
• FINITE DIFFERENCE THEORY

Subject Categories:

• Fluid Mechanics
• Mechanics
• Aerodynamics
• Computer Programming and Software

Distribution Statement:

APPROVED FOR PUBLIC RELEASE