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3-D viscous flow CFD analysis of the propeller effect on an advanced ducted propeller subsonic inletThe time-marching Navier-Stokes code PARC3D was used to study the 3D viscous flow associated with an advanced ducted propeller subsonic inlet at take-off operating conditions. At a free stream Mach number of 0.2, experimental data for the inlet-with-propeller test model indicated that the airflow was attached on the cowl windward lip at an angle of attack of 25 deg became unstable at 29 deg, and separated at 30 deg. An experimental study with a similar inlet and without propeller (through-flow) indicated that flow separation occurred at an angle of attack a few degrees below the value observed when the inlet was tested with the propeller, indicating the propeller's favorable effect on inlet performance. In the present numerical study, flow blockage analogous to the propeller was modeled via a PARC3D computational boundary condition (BC), the 'screen BC', based on 1-1/2 dimension actuator disk theory. The application of the screen BC in this numerical study provided results similar to those of past experimental efforts in which either the blockage device or the propeller was used.
Document ID
19930065731
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Iek, Chanthy
(NASA Lewis Research Center Cleveland, OH, United States)
Boldman, Donald R.
(NASA Lewis Research Center Cleveland, OH, United States)
Ibrahim, Mounir
(Cleveland State Univ. OH, United States)
Date Acquired
August 16, 2013
Publication Date
June 1, 1993
Subject Category
Aerodynamics
Report/Patent Number
AIAA PAPER 93-1847
Meeting Information
Meeting: AIAA, SAE, ASME, and ASEE, Joint Propulsion Conference and Exhibit
Location: Monterey, CA
Country: United States
Start Date: June 28, 1993
End Date: June 30, 1993
Sponsors: ASEE, ASME, AIAA, SAE
Accession Number
93A49728
Distribution Limits
Public
Copyright
Other

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