Accession Number:

ADA009898

Title:

Convergence Acceleration and Shock Fitting for Transonic Aerodynamics Computations.

Descriptive Note:

Technical rept.,

Corporate Author:

UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES DEPT OF AEROSPACE ENGINEERING

Personal Author(s):

• Hafez,Mohamed M.
• Cheng,H. K.

Report Date:

1975-04-01

Pagination or Media Count:

28.0

Abstract:

The report presents a method to accelerate convergence of iterative solutions for elliptic and mixed-type partial differential equations. Part two presents shock-fitting method for the line-relaxation solutions to a transonic potential equation. Significant improvements over existing finite-difference methods in speed economy and in accuracy are demonstrated in the framework of transonic small-disturbance theory.

Descriptors:

• *PROBLEM SOLVING
• *AERODYNAMICS
• *TRANSONIC CHARACTERISTICS
• MATRICES(MATHEMATICS)
• SHOCK WAVES
• TRANSFORMATIONS(MATHEMATICS)
• PARTIAL DIFFERENTIAL EQUATIONS
• CONVERGENCE
• PERTURBATION THEORY
• RELAXATION
• ITERATIONS

Subject Categories:

• Aerodynamics
• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE