Turbulent Combustion Interaction Models for LES Simulations of High Speed Flow

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$100,000.00
Award Year:
2011
Program:
STTR
Phase:
Phase I
Contract:
FA8650-AA-M-2173
Agency Tracking Number:
F10B-001-0081
Solicitation Year:
2010
Solicitation Topic Code:
OSD10-T001
Solicitation Number:
2010.B
Small Business Information
Cascade Technologies Incorporated
2445 Faber Place, #100, Palo Alto, CA, -
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
179576715
Principal Investigator:
Hung Le
General Manager
(650) 521-0243
hle@turbulentflow.com
Business Contact:
Donna Carrig
Chief Financial Officer
(650) 521-0243
ddcarrig@turbulentflow.com
Research Institution:
Georgia Institute of Technology
Suresh Menon
Georgia Tech Research Corporat
PO Box 100117
Atlanta, GA, 30384-
(404) 894-9126
Nonprofit college or university
Abstract
At present, the predictive capability of simulation codes and models used in the conceptual planning and design of high-speed propulsion systems is limited by the ability to describe the complex flow fields inside the combustor, mixing models, detailed chemistry and turbulence-chemistry interactions, and subgrid-closure models. The objective of the proposed work is to develop and validate a high-fidelity LES combustion model based on Flamelet Progress Variable Approach for the accurate prediction of high-speed turbulent combustion. At Cascade, we have a state-of-the-art, fully unstructured, multi-physics LES solver that is currently being used to simulate turbulent combustion in military aircraft engines. Our present efforts are on extending our simulation tool to high-speed turbulent combustion, improve its performance and further validate our approach. In Phase I, a comprehensive program is proposed that consists of (i) an a priori study to evaluate critical model assumption of the flamelet-formulation for reacting jet in high speed-relevant cross-flow conditions and (ii) a posteriori validation and applicability assessment of the LES flamelet-combustion model for supersonic combustion against experimental data. The results of these studies will be leveraged towards model development/assessment, validation of the simulation tool, and improvement of the predictive capabilities of the methodology for high-speed turbulent combustion.

* information listed above is at the time of submission.

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