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Title: Turbine Flowmeter And Real Time Computation As A Diagnosis Tool For Unsteady Flows
Author: Francois Liousse
Source: 1986 International Symposium on Fluid Flow Measurement
Year Published: 1986
Abstract: It is well known that almost every type of currently used flowmeters exhibit some deviations in evaluating a mean flow value from steady state calibration when submitted to unsteady flow conditions such as pulsations or intermittency. Some methods of correction are availaible, depending on the metering device type and on the knowledge of the time dependent characteristics of the flow, mainly pressure and velocity fluctuations (1). The way proposed in this paper to determine the flow characteristics is the use of a turbine flowmeter associated with a computer including a model of the dynamic behaviour of the flowmeter rotor. A three steps process is described : i) establishment of the dynamic behaviour equation. ii) parameters identification - Results. iii) use of the model for real time signal corrections and evaluation of flow characteristics.

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