GLTRS--Glenn
TITLE AND SUBTITLE:
High Fidelity System Simulation of Multiple Components in Support of the UEET Program

AUTHOR(S):
Ronald C. Plybon, Allan VanDeWall, Rajiv Sampath, Mahadevan Balasubramaniam, Ramakrishna Mallina, and Rohinton Irani

REPORT DATE:
April 2006

FUNDING NUMBERS:
WBS 984754.02.07.03
NAS3-01135, Task Order #6

PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES):
GE Aircraft Engines
One Neumann Way
Cincinnati, Ohio 45215

PERFORMING ORGANIZATION REPORT NUMBER:
E-15477

SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES):
National Aeronautics and Space Administration
Washington, DC 20546-0001

REPORT TYPE AND DATES COVERED:
Final Contractor Report

SPONSORING/MONITORING AGENCY REPORT NUMBER:
NASA CR-2006-214230

SUPPLEMENTARY NOTES:
Ronald C. Plybon and Allan VanDeWall, GE Aircraft Engine, One Neumann Way, Cincinnati, Ohio 45215; Rajiv Sampath, Mahadevan Balasubramaniam, Ramakrishna Mallina, and Rohinton Irani, GE Global Research Center,1 Research Circle, Niskayuna, New York 12309. Project manager, Clayton Meyers, Vehicle Systems Projects Office, Glenn Research Center, organization code PRV, 216-433-3882.

ABSTRACT:
The High Fidelity System Simulation effort has addressed various important objectives to enable additional capability within the NPSS framework. The scope emphasized High Pressure Turbine and High Pressure Compressor components. Initial effort was directed at developing and validating intermediate fidelity NPSS model using PD geometry and extended to high-fidelity NPSS model by overlaying detailed geometry to validate CFD against rig data. Both "feed-forward" and "feedback" approaches of analysis zooming was employed to enable system simulation capability in NPSS. These approaches have certain benefits and applicability in terms of specific applications--"feedback" zooming allows the flow-up of information from high-fidelity analysis to be used to update the NPSS model results by forcing the NPSS solver to converge to high-fidelity analysis predictions. This apporach is effective in improving the accuracy of the NPSS model; however, it can only be used in circumstances where there is a clear physics-based strategy to flow up the high-fidelity analysis results to update the NPSS system model. "Feed-forward" zooming approach is more broadly useful in terms of enabling detailed analysis at early stages of design for a specified set of critical operating points and using these analysis results to drive design decisions early in the development process.

SUBJECT TERMS:
Propulsion systems (aircraft)

NUMBER OF PAGES:
41

PDF AVAILABLE FROM URL:
2006/CR-2006-214230.pdf ( 2,234 KB )
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