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Numerical calculation of boundary-induced interference in slotted or perforated wind tunnels including viscous effects in slotsA numerical method is presented for calculating the incompressible boundary-induced interference in wind tunnels of rectangular cross section with slotted or perforated walls. The method includes a wall representation which is capable of satisfying a generalized homogeneous boundary condition including the effects of viscosity within the slots. The effects of viscosity in the slots are found to be very significant. The method allows for a variation in the boundary conditions along the tunnel walls. The model can be any configuration and can be located anywhere in the test section. The interference can be computed at any point in the test section.
Document ID
19720021342
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Technical Note (TN)
Authors
Keller, J. D. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 2, 2013
Publication Date
August 1, 1972
Subject Category
Aerodynamics
Report/Patent Number
L-8349
NASA-TN-D-6871
Accession Number
72N28992
Funding Number(s)
PROJECT: RTOP 501-06-09-02
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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