NDLI: Investigation of transonic flow over segmented slotted wind tunnel wall with mass transfer

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Investigation of transonic flow over segmented slotted wind tunnel wall with mass transfer

Content Provider	NASA Technical Reports Server (NTRS)
Author	Bhat, M. K. Vakili, A. D. Wu, J. M.
Copyright Year	1990
Description	The flowfield on a segmented multi-slotted wind tunnel wall was studied at transonic speeds by measurements in and near the wall layer using five port cone probes. The slotted wall flowfield was observed to be three-dimensional in nature for a relatively significant distance above the slot. The boundary layer characteristics measured on the single slotted wall were found to be very sensitive to the applied suction through the slot. The perturbation in the velocity components generated due to the flow through the slot decay rapidly in the transverse direction. A vortex-like flow existed on the single slotted wall for natural ventilation but diminished with increased suction flow rate. For flow on a segmented multi-slotted wall, the normal velocity component changes were found to be maximum for measurement points located between the segmented slots atop the active chamber. The lateral influence due to applied suction and blowing, through a compartment, exceeded only slightly that in the downstream direction. Limited upstream influence was observed. Influence coefficients were determined from the data in the least-square sense for blowing and suction applied through one and two compartments. This was found to be an adequate determination of the influence coefficients for the range of mass flows considered.
File Size	2958729
Page Count	89
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19910006668
Archival Resource Key	ark:/13960/t1kh5gx5q
Language	English
Publisher Date	1990-12-01
Access Restriction	Open
Subject Keyword	Aerodynamics Suction Transonic Flow Upstream Transonic Speed Blowing Perturbation Wind Tunnel Walls Coefficients Mass Transfer Sensitivity Slotted Wind Tunnels Compartments Flow Distribution Flow Velocity Ventilation Distance Boundary Layers Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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