Advanced Smart-Oriented Approach in Creation of Modern Ultrasonic Meters

The main goal of our research is based on the development of scientifically substantiated methodology for improving the design and ensuring the proper installation of modern ultrasonic meters. Their measurement principle is based on local flow velocity measurements in some defined planes, followed by mathematical transformations of the obtained results to estimate the flow rate as a whole by a circular cross-section in closed pressurized pipelines. In fact, the design of most current ultrasonic “time-of-flight” meters is based on this approach. The specific activities of the investigation are focused on: - development of the database using mathematical descriptions of flows with distorted axial symmetry caused by typical elements of closed pressurized pipelines; - research of the degree of real flow disturbances influence on the measurement results of ultrasonic meters with different locations of measuring paths; - development of scientifically substantiated methodology for optimal design and information processing algorithms aimed to improve the accuracy of ultrasonic meters in conditions of flow distortion. The main task is to investigate both the flow characteristic at the inlet of the meters and the interaction of the meter’s transducers with the flow by evaluating their response to the known distorted velocity profiles. Designated problem has been solved by a comprehensive investigation of physical processes occurring in pipelines, in particular with a complex velocity distribution, which can be caused by bends, spatial bends, contaminants or incorrect meter’s installations. Particular importance during the research was given to formulate the fundamental basis that can be used to minimize the measurement error of disturbed flows by ultrasonic meters.