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Rapid Calculations of Three-Dimensional Inlet/Fan InteractionTwo computational fluid dynamics codes have been merged to permit rapid calculations of inlet/fan interaction. Inlets are modeled using the WIND-US Navier-Stokes code. Fans are modeled using a new three-dimensional Euler code called CSTALL that solves the flow through the entire compression system but models blade rows using body forces for turning and loss. The body force model is described and it is shown how unknown terms in the model can be estimated from other Navier-Stokes solutions of the blade rows run separately. The inlet and fan calculations are run simultaneously and are coupled at an interface plane using a third code called SYNCEX that is described briefly. Results are shown for an axisymmetric nacelle at high angle of attack modeled both as an isolated inlet and coupled to a single stage fan. The isolated inlet calculations are unrealistic after the flow separates but the coupled codes can model large regions of separated flow extending from the lower lip of the nacelle into the fan rotor.
Document ID
20080005207
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Authors
Chima, Rodrick V. (NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
August 24, 2013
Publication Date
October 30, 2007
Subject Category
Aeronautics (General)
Meeting Information
Meeting: Fundamental Aeronautics 2007 Annual Meeting
Location: New Orleans, LA
Country: United States
Start Date: October 30, 2007
End Date: November 1, 2007
Funding Number(s)
WBS: WBS 984754.02.07.03.13.02
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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