Flow meter utilizing Karman vortex street

Details Flow meter utilizing Karman vortex street Flow meter utilizing Karman vortex street

1980-09-08

1983-07-12

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

By measuring vibrations or acoustic energy

73202, G01F 132

Patent

active

043923852

ABSTRACT:
A fluid conduit with a rectangular cross-section is divided into two parallel conduits. A vortex generating rod is disposed perpendicularly to the flow direction in one of the conduits. An ultrasonic wave is directed perpendicularly across the conduit to detect the Karman vortex streets. A sound absorbing material is located along the portion of the conduit wall where the ultrasonic waves exist for preventing the formation of standing waves.

REFERENCES:
patent: 2515221 (1950-07-01), Henning
patent: 3116639 (1964-01-01), Bird
patent: 3693438 (1972-09-01), Yamasaki et al.
patent: 3751979 (1973-08-01), Ims
patent: 3818877 (1974-06-01), Barrera
patent: 4041757 (1977-08-01), Baker
patent: 4142407 (1979-03-01), Kurolwa et al.
patent: 4275590 (1981-01-01), Kawai

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