Accession Number:

ADA002293

Title:

A Pragmatical Analysis of Discretization Procedures For Initial- and Boundary-Value Problems in Gas Dynamics and Their Influence on Accuracy or LOOK MA, NO WIGGLES.

Descriptive Note:

Scientific rept.,

Corporate Author:

POLYTECHNIC INST OF NEW YORK FARMINGDALE DEPT OF AEROSPACE ENGINEERING AND APPLIED MECHANICS

Personal Author(s):

• Moretti,Gino

Report Date:

1974-09-01

Pagination or Media Count:

42.0

Abstract:

Examples are given of gas dynamical problems treated numerically, where apparently minor changes to the coding eliminate all numerical oscillations and instabilities. In each case, the changes are justified by physical considerations and the importance of consistency of coding with physical properties is emphasized.

Descriptors:

• *GAS DYNAMICS
• *COMPRESSIBLE FLOW
• TRANSIENTS
• SHOCK WAVES
• FINITE DIFFERENCE THEORY
• FLOW FIELDS
• NUMERICAL INTEGRATION
• BOUNDARY VALUE PROBLEMS
• ENTROPY
• LAVAL NOZZLES

Subject Categories:

• Numerical Mathematics
• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE