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Analysis of the uncertainties in velocity measurements with triple hot-wire probesA detailed computerized sensitivity analysis of the triple hot-wire equations has been performed in order to delineate the uncertainties associated with measurements of the velocity components. Absolute and relative uncertainties for the instantaneous hot-wire outputs are calculated as functions of roll and pitch angles, based on a constant probability combination of the uncertainties in the inputs. From the results, it is concluded that the small inherent difficulties associated with the triple hot-wire data do not reflect artifacts introduced by the data processing. Fixed errors present in the V and W channels of the output are due to the nonzero measuring volume of the triple wire probe, and are entirely predictable.
Document ID
19860039730
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Frota, M. N.
(Stanford Univ. CA, United States)
Moffat, R. J.
(Stanford University CA, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1984
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
86A24468
Funding Number(s)
CONTRACT_GRANT: NAG3-3
Distribution Limits
Public
Copyright
Other

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