COUPLING GRID ADAPTION TO AN IMPLICIT NAVIER-STOKES SOLUTIONPROCEDURE

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: N/A
Agency Tracking Number: 11910
Amount: $59,999.00
Phase: Phase I
Program: SBIR
Awards Year: 1990
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
3055 112th Avenue N.e. #208, Bellevue, WA, 98004
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Scott T. Imlay
 Senior Research Engineer
 (206) 827-3304
Business Contact
 KELTON M. PEERY
Title: PRESIDENT
Phone: (206) 827-3304
Research Institution
N/A
Abstract
A GRID ADAPTION PROCEDURE IS PROPOSED FOR A RECENTLY DEVELOPED CLASS OF NAVIER-STOKES SOLVERS WHICH USE RELAXATION RATHER THAN APPROXIMATE FACTORIZATION TO SOLVE THE LINEAR SYSTEM OF EQUATIONS. THE OBJECTIVE OF THE PROPOSED WORK IS THE IMPLICIT COUPLING OF AN EXISTING TWO-DIMENSIONAL NAVIER-STOKES CODE AND AN EXISTING TWO-DIMENSIONAL GRID ADAPTION CODE. THE GRID ADAPTION USES A SPRING/DAMPER ANALOGY AND A NOVEL NON-LINEAR SPRING TO AVOID GRID DEPLETION PROBLEMS. DURING THE PHASE I R&D EFFORT THE GRID ADAPTION PROCEDURE WILL BE REFINED TO CONTROL GRID ORTHOGONALITY AND IMPROVE CONVERGENCE, AND METHODS OF IMPLICITLY COUPLING THE GRID ADAPTION TO THE NAVIER-STOKES SOLVER WILL BE INVESTIGATED. THE COMBINED ADAPTIVE GRID/NAVIER-STOKES SOLUTION PROCEDURE WILL THEN BE TESTED ON REPRESENTATIVE SUPERSONIC AND TRANSONIC FLOW PROBLEMS.

* Information listed above is at the time of submission. *

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