Coupled Vertical/Short Takeoff and Landing (VSTOL) Down Wash-Ground Effect and Ship Air Wake Turbulent Flow Simulation Model

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$99,972.00
Award Year:
2002
Program:
SBIR
Phase:
Phase I
Contract:
N68335-02-C-3057
Agency Tracking Number:
N01-155-05
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Combustion Research & Flow Technology, I
174 North Main Street, P.O. Box 1150, Dublin, PA, 18917
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
929950012
Principal Investigator:
Neeraj Sinha
Vice President & Tech Dir
(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
"Integration of aviation units with air capable Navy ships has always been a challenge. V/STOL aircraft, e.g. AV-8B, JSF, etc. encounter unique challenges in performing takeoff and landing during the course of shipboard operations due to the interaction ofthe propulsion-generated jet downwash with the unsteady air wake generated by the ship superstructure & deck. Operational envelopes must be developed through extremely expensive, time-consuming and demanding at-sea trials. Additionally, the powerful V/STOLjet outwash is a major safety hazard for ship deck personnel. The proposed effort will lead to thedevelopment and validation of a physics-based, high fidelity Computational Fluid Dynamic (CFD) model for predicting dynamic interface (DI) performance. Complexity of the geometry, magnitude of the domains entailed, and presence of a very broad range ofphysical phenomena make this into a challenging proposition. A novel unstructured CFD method is proposed which brings together: 1) innovations in CFD numerical algorithm; 2) resource efficient hybrid RANS-LES turbulence modeling; 3) turbulent flowfieldreconstruction using Proper Orthogonal Decomposition (POD); and 4) an advanced parallel architecture framework. A zonal simulation strategy has been formulated which provides optimum utilization of computational resources for simulating DI performance ofrealistic ship-aircraft at true conditions. The technology development proposed is directl

* information listed above is at the time of submission.

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