Multiwire thermocouples in reversing flow
作者:
L. J. Forney,
G. C. Fralick,
期刊:
Review of Scientific Instruments
(AIP Available online 1995)
卷期:
Volume 66,
issue 10
页码: 5050-5054
ISSN:0034-6748
年代: 1995
DOI:10.1063/1.1146129
出版商: AIP
数据来源: AIP
摘要:
Measurements are recorded for multiwire thermocouples consisting of either two or three wires of unequal diameters. Signals from the multiwire probe are recorded for a reversing gas flow with both a periodic temperature and time constant fluctuation. It is demonstrated that the reconstructed signal from the multiwire thermocouple requires no compensation provided &ohgr;/&ohgr;1<2.3 for two wires or &ohgr;/&ohgr;1<3.6 for three wires where &ohgr;1(=2&pgr;f) is the natural frequency of the smaller wire based on the maximum gas velocity. The latter results were possible provided Fourier transformed data from the wires were used and knowledge of the gas velocity phase angle was available. ©1995 American Institute of Physics.
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