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Turbulent Combustion Interaction Models for LES Simulations of High Speed Flow

Award Information

Agency:
Department of Defense 		Branch:
Office of the Secretary of Defense 		Award ID:
 Program Year/Program:
2011 / STTR
Agency Tracking Number:
O10B-001-1019 		Solicitation Year:
2010 		Solicitation Topic Code:
OSD10-T001 		Solicitation Number:
2010.B
Small Business Information
Combustion Science & Engineering, Inc.
8940 Old Annapolis Road Suite L Columbia, MD -
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2011
Title: Turbulent Combustion Interaction Models for LES Simulations of High Speed Flow
Agency / Branch: DOD / OSD
Contract: FA8650-11-M-2175
Award Amount: $99,998.00
 

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.

Principal Investigator:

Ponnuthurai Gokulakrishnan
Principal Engineer
(410) 884-3266
pgokulakrishnan@csefire.com

Business Contact:

Michael Klassen
Vice President
(410) 884-3266
mklassen@csefire.com
Small Business Information at Submission:

Combustion Science & Engineering, Inc.
8940 Old Annapolis Road Suite L Columbia, MD -

EIN/Tax ID: 522071781
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Research Institution Information:
University of Michigan
Wolverine Tower,1st Flr,R1066
3003 South State Street
Ann Arbor, MI 48109-1274
Contact: Krista L. Campeau
Contact Phone: (734) 936-1289