Accession Number:

ADA243977

Title:

Accurate, Productive Aerodynamic Simulation on Patched Mesh Systems

Descriptive Note:

Final rept. 1 Oct 86-30 Sep 91,

Corporate Author:

PEDA CORP PALO ALTO CA

Personal Author(s):

Report Date:

1991-10-18

Pagination or Media Count:

52.0

Abstract:

In the fifth and final year of the program the research has completed defining data structures, object based programming style, and tools for a new flexible approach to scientific programming and problem solving. Problems of program complexity associated with changing models and physics as well as with joined and disjoint multiple independent patched mesh domain decompositions for treating complex geometries and resolving captured flow structures can by systematically organized within the context of the directed graph programming concept being explored. Problems and parts of problems having geometric connectivity or its analogs such as association, hierarchy or precedence relationships are naturally exhibited and easily debugged or modified in the graph. The solution of problems is literally to traverse the graphs. For the emerging prototype aerodynamic simulation facility, the graphs which are to control grid generation Navier Stokes solution procedures, and scientific graphics are to be constructed with a graphical editor hosted in high performance graphics workstations. The efficient global data structure for the system is a set of large linear arrays in which the data and parameterization associated with the independent quadrilateral blocks of mesh are sequentially stacked. The directed graph is to control procedures that point to and operate on the data structure.

Subject Categories:

  • Computer Programming and Software
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE