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High-Fidelity Multiphysics Simulations of Nozzle Erosion

Award Information

Department of Defense
Missile Defense Agency
Award ID:
Program Year/Program:
2010 / STTR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
MDA 09T009
Solicitation Number:
Small Business Information
IllinoisRocstar LLC
60 Hazelwood Drive P. O. Box 3001 Champaign, IL -
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2010
Title: High-Fidelity Multiphysics Simulations of Nozzle Erosion
Agency / Branch: DOD / MDA
Contract: HQ0006-10-C-7390
Award Amount: $99,999.00


A collaborative effort is proposed between IllinoisRocstar LLC and the University of Illinois to develop and commercialize a computational framework to investigate nozzle erosion in solid-propellant rocket motors (SRM) and tangential instability modes in liquid rocket engines (LRE). For SRM, highly resolved simulations will be performed to understand the effects of turbulent inlet conditions, as well as nozzle vectoring, on nozzle erosion. The thermal boundary layer is captured along the nozzle walls to compute the heat flux and erosion rates. To optimize the computational resources, the SRM nozzle configuration is studied by itself and appropriate inflow conditions are imposed. Two complementary formulations to apply these inlet conditions are described: the first is based on extracting the flow field from the full motor configuration for turbulent flows; while the second invokes a multiscale asymptotic analysis of turbulent flows inside rocket motor. Preliminary results suggest that specifying turbulent, rather than uniform, inlet conditions has a significant effect on nozzle erosion. For LRE, a full three-dimensional configuration is proposed to investigate tangential instabilities.

Principal Investigator:

Mark D. Brandyberry
Chief Operating Officer

Business Contact:

William A. Dick
Chief Executive Officer
Small Business Information at Submission:

IllinoisRocstar LLC
P. O. Box 3001 Champaign, IL 61826

EIN/Tax ID: 208533123
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Research Institution Information:
University of Illinois
OSPRA, 1901 S. First
Champaign, IL 61820
Contact: Kathy Young
Contact Phone: 2173332187