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

Award Information
Agency:
Department of Defense
Amount:
$99,998.00
Program:
SBIR
Contract:
W31P4Q-13-C-0172
Solitcitation Year:
2013
Solicitation Number:
2013.1
Branch:
Army
Award Year:
2013
Phase:
Phase I
Agency Tracking Number:
A131-005-0207
Solicitation Topic Code:
A13-005
Small Business Information
Combustion Research and Flow Technology, Inc.
6210 Keller's Church Road, Pipersville, PA, -
Hubzone Owned:
N
Woman Owned:
N
Socially and Economically Disadvantaged:
N
Duns:
929950012
Principal Investigator
 Neeraj Sinha
 Vice President&Technical Director
 (215) 766-1520
 sinha@craft-tech.com
Business Contact
 Brian York
Title: Treasurer and Principal Scientst
Phone: (215) 766-1520
Email: york@craft-tech.com
Research Institution
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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