Adaptive Mesh Controller for Computational Analysis

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$749,973.00
Award Year:
2002
Program:
SBIR
Phase:
Phase II
Contract:
F33615-02-C-3215
Agency Tracking Number:
011VA-0578
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Combustion Research & Flow Techno
174 North Main Street, P.O. Box 1150, Dublin, PA, 18917
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
929950012
Principal Investigator:
Neeraj Sinha
Vice President & Technica
(215) 249-9780
sinha@craft-tech.com
Business Contact:
Neeraj Sinha
Vice President & Tech Dir
(215) 249-9780
sinha@craft-tech.com
Research Institution:
n/a
Abstract
"Numerical simulation of store separation from weapons bays or wing pylons is made difficult by the need to move the computational mesh and provide adequate resolution of flow structures that are changing with time. The Phase I achievements demonstratethat an adaptive grid, which is coarsened and/or refined to accommodate the motion of the store, is a viable approach for performing realistic separation scenarios. This recent effort demonstrated the practicality of the approach and identified theelements required for further maturation of an adaptive mesh controller, CRISP CFD, in Phase II. The challenge of maintaining accurate surface definition as the mesh is refined or deformed will be addressed. Generalized solution error estimates willreplace gradient-based criterion. Elements of transient solution adaptation, such as moving flow features and high order solution transfer, will receive attention. A parallel implementation and dynamic load re-balancing will provide the necessaryautomation, eliminating the current "man-in-the loop" procedure. These investigations will demonstrate the potential effectiveness of CRISP CFD in a variety of disciplines, including weapons dispense. While the proposed program focuses on storeseparation applications, the resulting mesh adaptation toolkit will be invaluable in any computational analysis in which an unstructured mesh is employed."

* information listed above is at the time of submission.

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