Influence of the form of the vortex bodies on the technical performance of a vortex meter
Abstract
The performance of the vortex meter is reviewed. The measuring properties of the vortex meter depend on the behavior of the Strouhal, Reynolds, and Mach numbers. The vortex cavitation frequency is measured with an isothermal hot-film anemometer. Vortex bodies with T and delta profiles are studied by measuring the signal frequency period. The body thickness and length and the Reynolds number influence the Strouhal number and the relative standard difference of the period. Results are compared with measurements with a differential pressure flowmeter. The pressure loss of the vortex meter is smaller than that of the orifice plate, equal to that of the nozzle, and greater than that of the venturi nozzle.
- Publication:
-
In its Problems of Large Gas Flow Measurements at High and Low Pressures p 391-407 (SEE N86-30962 22-34
- Pub Date:
- July 1985
- Bibcode:
- 1985plgf.nasa..391K
- Keywords:
-
- Flowmeters;
- Performance Tests;
- Reynolds Number;
- Strouhal Number;
- Vortices;
- Cavitation Flow;
- Differential Pressure;
- Evaluation;
- Frequency Measurement;
- Hot-Film Anemometers;
- Fluid Mechanics and Heat Transfer