Vorticity probe utilizing strain measurements

Details Vorticity probe utilizing strain measurements Vorticity probe utilizing strain measurements

1978-01-24

1979-03-27

Goldstein, Herbert

Measuring and testing

Meteorology

Electric disturbance

73194E, G01P 508

Patent

active

041459210

ABSTRACT:
A probe with no-moving parts for measuring the vorticity of a flowing fluid. The probe consists of an elongated, cylindrical stem member having one end fixedly mounted, means for imparting to the other end of the stem member a torque which is proportional to the vorticity of a flowing fluid, and means for measuring the imparted torque. In a specific embodiment the torque imparting means consists of fins attached to the other end of the stem member and the measuring means consists of strain gauges oppositely wound around the circumference of the stem member. The strain gauge outputs indicate the torque being applied to the stem, and therefore provide signals proportional to the vorticity of the flowing fluid.

REFERENCES:
patent: 2714310 (1955-08-01), Jennings
patent: 3175395 (1965-03-01), Atanasoff
patent: 3203237 (1965-04-01), Ogren
patent: 3213682 (1965-10-01), Gongwer
patent: 3240060 (1966-03-01), Doyle
patent: 3381529 (1966-05-01), Martin et al.
Instrument & Apparatus News, 1/54.
Tollins et al., "Torsion Vane Flowmeter for the Continuous Recording of Air Flow", in J. of Sci. Instruments, 1962, vol. 39, pp. 115-118.

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