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Accession Number N20120018049
Title Framework for Simulating Turbine-Based Combined-Cycle Inlet Mode-Transition.
Publication Date Jul 2012
Media Count 10p
Personal Author D. K. Le D. R. Vrnak E. O. Hessel J. W. Slater
Abstract A simulation framework based on the Memory-Mapped-Files technique was created to operate multiple numerical processes in locked time-steps and send I/O data synchronously across to one-another to simulate system-dynamics. This simulation scheme is currently used to study the complex interactions between inlet flow-dynamics, variable-geometry actuation mechanisms, and flow-controls in the transition from the supersonic to hypersonic conditions and vice-versa. A study of Mode-Transition Control for a high-speed inlet wind-tunnel model with this MMF-based framework is presented to illustrate this scheme and demonstrate its usefulness in simulating supersonic and hypersonic inlet dynamics and controls or other types of complex systems.
Keywords Complex systems
Fluid dynamics
High speed
Hypersonic inlets
Inlet flow
Supersonic inlets
Wind tunnel models

Source Agency National Aeronautics and Space Administration
NTIS Subject Category 51A - Aerodynamics
81D - Jet & Gas Turbine Engines
46B - Fluid Mechanics
Corporate Author National Aeronautics and Space Administration, Cleveland, OH. NASA John H. Glenn Research Center at Lewis Field.
Document Type Conference proceedings
Title Note N/A
NTIS Issue Number 1316
Contract Number N/A

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