Advanced Flow Analyses in Complex Feed Systems

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$599,999.00
Award Year:
2004
Program:
SBIR
Phase:
Phase II
Contract:
NNS04AA08C
Agency Tracking Number:
022513
Solicitation Year:
2002
Solicitation Topic Code:
A5.04
Solicitation Number:
n/a
Small Business Information
Combustion Research and Flow Technology,
6210 Keller's Church Road, Pipersville, PA, 18947-1020
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
929950012
Principal Investigator:
Vineet Ahuja
Principal Investigator
(215) 766-1520
vineet@craft-tech.com
Business Contact:
Paula Schachter
Business Official
(215) 249-9780
schachte@craft-tech.com
Research Institution:
n/a
Abstract
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.

* information listed above is at the time of submission.

Agency Micro-sites

US Flag An Official Website of the United States Government