Measurement of velocity in water flow model

Details Measurement of velocity in water flow model Measurement of velocity in water flow model

1983-11-08

1985-10-01

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

By measuring transit time of tracer or tag

356 28, G01F 100

Patent

active

045438340

ABSTRACT:
The measurement of the velocity of a flow in a water flow model, characterized by conducting into a model water tank water containing a large volume of fine, uniform air bubbles to form a simulated field of flow; projecting a slit of light on said field of flow; photographing the slit of light beams with a television camera and displaying said photographed beams of light on the screen of a monitor television set; measuring changes of said displayed, irregularly reflected beams of light at two close points with two photosensors on said screen; determining a time interval in the changes of irregularly reflected beams of light at said two close points and finding the velocity of said flow with said time interval taken as defining the duration required for the pictured aggregate of air bubbles to move from one to the other of said two photosensors.

REFERENCES:
patent: 3762221 (1973-10-01), Coultnard
patent: 4201467 (1980-05-01), Hartmann et al.
Matthes et al., "Measurement of the Velocity of Gas Bubbles in Water by a Correlation Method", in Rev. Sci. Anst., vol. 41, #6, pp. 843-845.

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