USA flag logo/image

An Official Website of the United States Government

Turbulent Combustion Interaction Models for LES Simulations of High Speed Flow

Award Information

Department of Defense
Office of the Secretary of Defense
Award ID:
Program Year/Program:
2011 / STTR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Cascade TechNologies, Inc.
2445 Faber Place Suite 100 Palo Alto, CA 94303-3347
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-AA-M-2173
Award Amount: $100,000.00


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.

Principal Investigator:

Hung Le
General Manager
(650) 521-0243

Business Contact:

Donna Carrig
Chief Financial Officer
(650) 521-0243
Small Business Information at Submission:

Cascade Technologies Incorporated
2445 Faber Place #100 Palo Alto, CA -

EIN/Tax ID: 043353686
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Research Institution Information:
Georgia Institute of Technology
Georgia Tech Research Corporat
PO Box 100117
Atlanta, GA 30384-
Contact: Suresh Menon
Contact Phone: (404) 894-9126