Hydrogen bubble/thymol blue water velocity meter
作者:
C. R. Ellis,
H. G. Stefan,
期刊:
Journal of Hydraulic Research
(Taylor Available online 1987)
卷期:
Volume 25,
issue 2
页码: 187-196
ISSN:0022-1686
年代: 1987
DOI:10.1080/00221688709499297
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Water velocities in the centimeter or millimeter per second range are measurable by only a few instruments. Experimental laboratory studies frequently require such measurements. An inexpensive optical hydrogen bubble tracing device is described for velocity measurements in the range 0.5 to 8 cm/s. Modification to a thymol blue (pH) tracer method extends its applicability to the range 0.1 to 1.0 cm/s. Design and operational characteristics of the hydrogen bubble/thymol blue current meter are described. Analysis of low Reynolds number flow around a cylinder is used to explain meter calibration characteristics.
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