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Numerical Methodology for Coupled Time-Accurate Simulations of Primary and Secondary Flowpaths in Gas TurbinesDetailed information of the flow-fields in the secondary flowpaths and their interaction with the primary flows in gas turbine engines is necessary for successful designs with optimized secondary flow streams. Present work is focused on the development of a simulation methodology for coupled time-accurate solutions of the two flowpaths. The secondary flowstream is treated using SCISEAL, an unstructured adaptive Cartesian grid code developed for secondary flows and seals, while the mainpath flow is solved using TURBO, a density based code with capability of resolving rotor-stator interaction in multi-stage machines. An interface is being tested that links the two codes at the rim seal to allow data exchange between the two codes for parallel, coupled execution. A description of the coupling methodology and the current status of the interface development is presented. Representative steady-state solutions of the secondary flow in the UTRC HP Rig disc cavity are also presented.
Document ID
20080003805
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Authors
Przekwas, A. J. (CFD Research Corp. Huntsville, AL, United States)
Athavale, M. M. (CFD Research Corp. Huntsville, AL, United States)
Hendricks, R. C. (NASA Glenn Research Center Cleveland, OH, United States)
Steinetz, B. M. (NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
August 24, 2013
Publication Date
August 1, 2006
Publication Information
Publication: Seals/Secondary Fluid Flows Workshop 1997; Volume I
Subject Category
Aircraft Propulsion And Power
Distribution Limits
Public
Copyright
Public Use Permitted.

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IDRelationTitle20080003791Collected WorksSeals/Secondary Fluid Flows Workshop 1997; Volume I
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