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Advanced Flow Analyses in Complex Feed Systems

Award Information

National Aeronautics and Space Administration
Award ID:
Program Year/Program:
2004 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Combustion Research and Flow Technology, Inc.
6210 Kellers Church Road Pipersville, PA -
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 2
Fiscal Year: 2004
Title: Advanced Flow Analyses in Complex Feed Systems
Agency: NASA
Contract: NNS04AA08C
Award Amount: $599,999.00


The development of simulation technology is proposed for carrying out high-fidelity transient analyses of systems that support experimental rocket testing such as control valves, feed system elements, pressure regulators and other flow control elements. The simulation technology comprises of a generalized multi-element unstructured framework (CRUNCH CFD) with integrated sub-models for grid adaption, grid movement and multi-phase flow dynamics including cryogenic cavitation. As part of our Phase I effort, simulations were performed for a series of systems that included the 10-inch LOX service valve, split-body valve, pressure regulator valve and the cavitating LOX venturi valve, all at constant valve settings. Results indicated excellent agreement with experimental flow coefficient curves. In Phase II, we will extend the framework to provide coupled valve motion - flow transient analyses with the development of an automated grid movement procedure to track valve motion. Valve timing analysis for a number of high pressure valve systems will be performed and the resultant dynamic events such as cavitation and valve chatter that lead to pressure fluctuations will be simulated. The framework will be used as an analysis support tool to generate performance metrics, evaluate design modifications and identify dominant frequencies associated with hydrodynamic instabilities and valve motion.

Principal Investigator:

Vineet Ahuja
Principal Investigator

Business Contact:

Paula Schachter
Business Official
Small Business Information at Submission:

Combustion Research and Flow Technology, Inc.
6210 Keller's Church Road Pipersville, PA 18947

EIN/Tax ID: 232759059
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No