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High-Fidelity Simulation of Turbofan Noise

Award Information

Agency:
National Aeronautics and Space Administration
Branch:
N/A
Award ID:
90583
Program Year/Program:
2009 / SBIR
Agency Tracking Number:
084195
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
IllinoisRocstar LLC
60 Hazelwood Drive P. O. Box 3001 Champaign, IL -
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2009
Title: High-Fidelity Simulation of Turbofan Noise
Agency: NASA
Contract: NNX09CC83P
Award Amount: $99,975.00
 

Abstract:

Broadband fan noise ýý closely tied to turbulent flow on and around the fan blades ýý represents a key challenge to the noise reduction community due to the interaction of a highly turbulent flow field with complex, moving geometries. Prediction and high-fidelity simulation of fan noise demands a fundamental innovation in CFD methods due to moving geometries and accuracy requirements. The objective this work is to develop a flexible approach to handling multiple, overset grids for use in simulations of turbomachinery. In Phase 1 we will develop an innovative computational software tool for efficiently managing multiple, overlapping structured meshes in relative motion. This application will be used concurrently with a compressible Navier-Stokes solver and is an enabling technology in enabling high-fidelity simulations of turbulent flows in complex, moving geometries. Phase 1 will demonstrate software feasibility using a simplified model of the NASA Glenn Source Diagnostic Test (SDT) fan at realistic take-off conditions. We propose a simulation that includes a moving "rotor" blade row adjacent to a static blade row. Tailored post-processing of simulation results will provide information on the turbulent flow ýý and implied turbulent noise sources ýý including unsteady blade surface pressures, acoustic modes, and overall radiated noise. In Phase 2 we focus primarily on broadband turbulent noise sources of modern turbofan engines. By utilizing a realistic NASA SDT fan geometry and take-off flow conditions, we will use our new tools to simulate real-world systems and commercialize our software product.

Principal Investigator:

Mark D. Brandyberry
Principal Investigator
2177662567
mdbrandy@illinoisrocstar.com

Business Contact:

William A. Dick
Business Official
2174170885
wdick@illinoisrocstar.com
Small Business Information at Submission:

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

EIN/Tax ID: 208533123
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No