Short Duration, High Altitude, Mixed Continuum/Non-Continuum Flowfield

Award Information
Agency:
Department of Defense
Branch
Army
Amount:
$99,998.00
Award Year:
2013
Program:
SBIR
Phase:
Phase I
Contract:
W31P4Q-13-C-0172
Award Id:
n/a
Agency Tracking Number:
A131-005-0207
Solicitation Year:
2013
Solicitation Topic Code:
A13-005
Solicitation Number:
2013.1
Small Business Information
6210 Keller's Church Road, Pipersville, PA, -
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
929950012
Principal Investigator:
Neeraj Sinha
Vice President&Technical Director
(215) 766-1520
sinha@craft-tech.com
Business Contact:
Brian York
Treasurer and Principal Scientst
(215) 766-1520
york@craft-tech.com
Research Institute:
n/a
Abstract
The problem to be addressed within the present proposal is the accurate modeling of high altitude transient phenomena associated with short duration propulsive and/or detonative events taking into account the mixed continuum/rarefied nature of the flow, chemical kinetics, and two-phase flow while leveraging existing computational fluid dynamic technologies to minimizing development time. Past simulation work in the area of mixed continuum/rarefied flows has produced a mature one-way coupled framework for steady-state applications utilizing the CRAFT CFD Navier-Stokes flow solver for the continuum portion of the flow, the Automatic Efficient Generalized Interface Surface (AEGIS) Toolkit for continuum breakdown determination and interfacing, and a representative Direct Simulation Monte Carlo (DSMC) flow solver for the rarefied flow simulation. Application of this methodology to transient problems was also performed but contained many deficiencies from both a numerical and modeling standpoint. Recently, an unsteady framework has been developed for high-altitude transient flows, which relies on a more tightly coupled and synchronized methodology between the continuum and rarefied flows solvers and addresses the many deficiencies of earlier work. This new technology is now leveraged for the present application and will demonstrate the current capabilities. Simultaneously, improvements regarding two-phase flows and hard-body interaction will also be performed.

* information listed above is at the time of submission.

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