Turbulent‐nonturbulent interface detector
作者:
Valdis Kibens,
Leslie S. G. Kovasznay,
Lawrence J. Oswald,
期刊:
Review of Scientific Instruments
(AIP Available online 1974)
卷期:
Volume 45,
issue 9
页码: 1138-1144
ISSN:0034-6748
年代: 1974
DOI:10.1063/1.1686827
出版商: AIP
数据来源: AIP
摘要:
An analog circuit is presented for the detection in real time of the turbulent‐nonturbulent interface at the free stream edge of turbulent shear flows. The output of the circuit is a square wave whose value is unity when the detector probe is in turbulent flow, and is zero when in nonturbulent flow. The effectiveness of several detection schemes is evaluated. A method for calibrating the detector circuit is given by using a ``synthetic,'' intermittently turbulent simulated signal of known intermittency properties. A circuit for generating the simulated signal is also presented.
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