COUPLING GRID ADAPTION TO AN IMPLICIT NAVIER-STOKES SOLUTIONPROCEDURE

Award Information
Agency:
National Aeronautics and Space Administration
Amount:
$59,999.00
Program:
SBIR
Contract:
N/A
Solitcitation Year:
N/A
Solicitation Number:
N/A
Branch:
N/A
Award Year:
1990
Phase:
Phase I
Agency Tracking Number:
11910
Solicitation Topic Code:
N/A
Small Business Information
Amtec Engineering, Inc.
3055 112th Avenue N.e. #208, Bellevue, WA, 98004
Hubzone Owned:
N
Woman Owned:
N
Socially and Economically Disadvantaged:
N
Duns:
N/A
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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