NDLI: Turbulence and pressure loss characteristics of the inlet vanes for the 80- by 120-ft wind tunnel

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Turbulence and pressure loss characteristics of the inlet vanes for the 80- by 120-ft wind tunnel

Content Provider	NASA Technical Reports Server (NTRS)
Author	Dudley, Michael R.
Copyright Year	1990
Description	A series of wind tunnel investigations were conducted to determine the flow characteristics downstream of a set of wind tunnel inlet flow conditioning vanes. The purpose was to develop an understanding of the flow mechanisms that contributed to the pressure loss and turbulence generated by the vane set. The near-field characteristics and flow field development were investigated with a 1/3 scale two dimensional model of the vane set at near full-scale Reynolds numbers. In a second series of tests, the global flow field characteristics were investigated by means of a 1/15 scale model of the full vane set and the 5:1 contraction leading to the model's test section. Scale effects due to Reynolds number mismatch were identified and their significance noted and accounted for when possible. Scaling parameters were adopted that allowed predictions to be made of the expected turbulence and pressure distributions in the full-scale wind tunnel test section, based on the small-scale test results. The predictions were found to be in good agreement with actual measurements made in the full-scale facility.
File Size	1975917
Page Count	26
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19910004153
Archival Resource Key	ark:/13960/t6741pc6g
Language	English
Publisher Date	1990-10-01
Access Restriction	Open
Subject Keyword	Research And Support Facilities (air) Turbulence Wind Tunnels Scale Models Reynolds Number Scale Effect Two Dimensional Models Flow Characteristics Wind Tunnel Apparatus Inlet Flow Full Scale Tests Flow Distribution Vanes Wind Tunnel Tests Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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