Turbulent Combustion Interaction Models for LES Simulations of High Speed Flow

Award Information
Agency:
Department of Defense
Branch
Office of the Secretary of Defense
Amount:
$99,998.00
Award Year:
2011
Program:
STTR
Phase:
Phase I
Contract:
FA8650-11-M-2175
Award Id:
n/a
Agency Tracking Number:
O10B-001-1019
Solicitation Year:
2010
Solicitation Topic Code:
OSD10-T001
Solicitation Number:
2010.B
Small Business Information
8940 Old Annapolis Road Suite L, Columbia, MD, -
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
018413208
Principal Investigator:
PonnuthuraiGokulakrishnan
Principal Engineer
(410) 884-3266
pgokulakrishnan@csefire.com
Business Contact:
MichaelKlassen
Vice President
(410) 884-3266
mklassen@csefire.com
Research Institute:
University of Michigan
Krista L Campeau
Wolverine Tower,1st Flr,R1066
3003 South State Street
Ann Arbor, MI, 48109-1274
(734) 936-1289

Abstract
Computational Fluid Dynamics (CFD) solvers based on RANS, URANS or LES are required to estimate the filtered reaction rates to account for the turbulent-chemistry interactions for accurate modeling of reactive flows. It is critical to have a reliable reaction rate estimation scheme coupled with turbulent combustion models to estimate filtered reaction rates computationally efficient way. In this work, Combustion Science & Engineering (CSE), Inc. proposes to develop a new technically innovative time-scale based"adaptive chemistry scheme"coupled with off-line Linear Eddy Mixing (LEM) model to evaluate filtered reaction rates for RANS/URANS/LES simulation. This dynamic reduced kinetic modeling approach will reduce the computational cost of chemical source term estimation significantly by reducing the number of species to be evaluated locally as well as reducing the stiffness of the ODEs to be solved. The goal here is to develop a robust and dynamically evolving kinetics model that will be combined with the mixing model of LEM to account for the effect of small time scales of relevance to supersonic combustion. Competition between mixing and molecular processes will also be included to assess the importance of the latter on turbulent-chemistry interaction.

* information listed above is at the time of submission.

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