Accession Number:

ADA270502

Title:

Canonical Forms of Multidimensional Steady Inviscid Flows

Descriptive Note:

Contractor rept.

Corporate Author:

NATIONAL AERONAUTICS AND SPACE ADMINISTRATION HAMPTON VA LANGLEY RESEARCH CENTER

Personal Author(s):

Report Date:

1993-06-01

Pagination or Media Count:

15.0

Abstract:

Canonical forms and canonical variables for inviscid flow problems are derived. In these forms the components of the system governed by different types of operators elliptic and hyperbolic are separated. Both the incompressible and compressible cases are analyzed and their similarities and differences are discussed. The canonical forms obtained are block upper triangular operator form in which the elliptic and non-elliptic parts reside in different blocks. The full nonlinear equations are treated without using any linearization process. This form enables a better analysis of the equations as well as better numerical treatment. These forms are the analog of the decomposition of the one dimensional Euler equations into characteristic directions and Riemann invariants.

Subject Categories:

  • Aerodynamics
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE