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A One Dimensional, Time Dependent Inlet/Engine Numerical Simulation for Aircraft Propulsion SystemsThe NASA Lewis Research Center (LeRC) and the Arnold Engineering Development Center (AEDC) have developed a closely coupled computer simulation system that provides a one dimensional, high frequency inlet/engine numerical simulation for aircraft propulsion systems. The simulation system, operating under the LeRC-developed Application Portable Parallel Library (APPL), closely coupled a supersonic inlet with a gas turbine engine. The supersonic inlet was modeled using the Large Perturbation Inlet (LAPIN) computer code, and the gas turbine engine was modeled using the Aerodynamic Turbine Engine Code (ATEC). Both LAPIN and ATEC provide a one dimensional, compressible, time dependent flow solution by solving the one dimensional Euler equations for the conservation of mass, momentum, and energy. Source terms are used to model features such as bleed flows, turbomachinery component characteristics, and inlet subsonic spillage while unstarted. High frequency events, such as compressor surge and inlet unstart, can be simulated with a high degree of fidelity. The simulation system was exercised using a supersonic inlet with sixty percent of the supersonic area contraction occurring internally, and a GE J85-13 turbojet engine.
Document ID
20000020811
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Doug Garrard
(Sverdrup Technology, Inc. Arnold AFS, TN United States)
Milt Davis Jr.
(Sverdrup Technology, Inc. Arnold AFS, TN United States)
Gary Cole
(Glenn Research Center Cleveland, Ohio, United States)
Date Acquired
August 19, 2013
Publication Date
February 1, 1999
Publication Information
Publication: Design Principles and Methods for Aircraft Gas Turbine Engines
Publisher: North Atlantic Treaty Organization
Subject Category
Aircraft Propulsion And Power
Meeting Information
Meeting: RTO Applied Vehicle Technology Panel (AVT) Symposium
Location: Toulouse
Country: FR
Start Date: May 11, 1998
End Date: May 15, 1998
Sponsors: North Atlantic Treaty Organization
Funding Number(s)
CONTRACT_GRANT: NASA Order C-71064-E
Distribution Limits
Public
Copyright
Other
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