Mesure des vitesses d’eau à L’aide de bulles d’hydrogéne/bleu de thymol

Translated title of the contribution: Hydrogen bubble/thymol blue water velocity meter

C. R. Ellis, H. G. Stefan

Research output: Contribution to journalArticlepeer-review


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.

Translated title of the contributionHydrogen bubble/thymol blue water velocity meter
Original languageFrench
Pages (from-to)187-196
Number of pages10
JournalJournal of Hydraulic Research
Issue number2
StatePublished - Mar 1987

Bibliographical note

Funding Information:
material is based on work done under National Science Foundation Grant No. CEE 830


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