COUPLING GRID ADAPTION TO AN IMPLICIT NAVIER-STOKES SOLUTIONPROCEDURE

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$59,999.00
Award Year:
1990
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
11910
Agency Tracking Number:
11910
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
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Scott T. Imlay
Senior Research Engineer
(206) 827-3304
Business Contact:
KELTON M. PEERY
PRESIDENT
(206) 827-3304
Research Institute:
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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