Spatial resolution and downwash velocity corrections for multiple-hole pressure probes in complex flows
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Authors
Ligrani, P.M.
Singer, B.A.
Baun, L.R.
Subjects
Advisors
Date of Issue
1989
Date
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Abstract
Methods to account for finite spatial resolution and
induced downwash velocity are given for multiple-hole
pressure probes as they are used to measure complex
three-dimensional flow fields. Spatial resolution limitations
result because pressures from different ports are not
measured at the same physical location. As transverse
gradients increase in magnitude, uncorrected errors then
become larger. Because of this, most existing correction
techniques employ schemes which depend on gradients of
velocity or pressure (Ikui and Inoue 1970; Sitaram et al.
1981; Eibeck and Eaton 1985; Westphal etal. 1987). A
simpler and more sensible approach for a five-hole probe
corrects pressures so that all appear to be measured at the
location of the central hole by accounting for the exact
spacing between different pressure ports...
Type
Article
Description
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Department
Mechanical Engineering
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Sponsors
This work was sponsored by the US Army Office of Aviation Research and Development, NASA-Defense Purchase Request No. C-80019-F. Dr. K. Civinskas was the program monitor.
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Format
Citation
Experiments in Fluids 7 (1989)
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.