Sidetone generator flowmeter
A device is described for measuring the velocity of fluid flow along an enclosed path in a velocity range in which the Strouhal number is constant. The device consists of: sidetone generator means, comprising a cavity in a wall defining the flow path for the fluid flow, for generating a side tone during the flow of fluid past the cavity in the velocity range in which the Strouhal number is constant, the dimensions of the cavity being such as to produce a dominant vibratory frequency within the cavity; pressure sensing means for sensing the dominant vibratory frequency produced in the cavity responsive to the flow of fluid past the cavity; and meter meand responsive to the dominant vibratory frequency sensed by the pressure sensing means for providing an indication of the flow velocity of the fluid flowing past the cavity; the cavity being formed in the wall of a pipe and comprising a recess in the pipe wall, and a chamber being formed on the upstream edge of the recess.
- Assignee:
- Dept. of Energy
- Patent Number(s):
- US 4572003
- OSTI ID:
- 5810190
- Country of Publication:
- United States
- Language:
- English
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