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Development of a liquid-flow pulsator
Svete, Andrej, 1983- ...
The increasing demands for more accurate flow measurements have made the study of pulsating flow effects crucial for the further development of flowmeters. This paper presents the development of an ...experimental test facility with an integrated water-flow pulsator for experimental investigations of the water pulsation effects on flowmeters. The mechanical implementation of the measurement system with a built-in diaphragm pulsator and integrated expansion chambers was developed with the help of mathematical modeling of the entire test system using the method of characteristics. The mathematically obtained frequency characteristic of the pulsator shows typical resonances, which depend on the acoustic properties of the measurement system and the mechanical properties of the pulsators diaphragm. The water-flow pulsators characteristics were experimentally confirmed by a spectral analysis of the generated water flow pulsations, which were measured with an orifice plate flowmeter. The developed flow pulsator with integrated expansion chambers is able to generate reproducible water flow pulsations with defined properties, such as the frequency and amplitude of the pulsating flow.
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