MEASUREMENTS OF UNSTEADY FLOW PARAMETERS IN PIPE-RECEIVER AND PIPE-TURBOCHARGER SYSTEMS
Journal Title: Metrology and Measurement Systems - Year 2006, Vol 13, Issue 1
Abstract
In the paper, the characteristic features of an unsteady flow in two systems: a high-volume pipe-receiver and a pipe-turbine are described. The tests were made under the conditions of a pulsating pipe supply in the range of frequencies 20-100 Hz. The following measurements of instantaneous values of unsteady flow parameters were made: pressure (piezoresistive transducers), temperature (Constant Current Thermometer) and velocity (Constant Temperature Anemometer). The applied measurement methods - owing to good dynamic properties of transducers - permitted us to gather relatively rich and complete information on flow phenomena in such systems. It was shown that the pipe-receiver system behaved as a resonator with a marked range of amplitude amplification and a distinct relationship between the resonance frequency and the pipe length. In this system, an effect of high pressure signal attenuation along the pipe and a reverse flow were observed as well. On the other hand, the pipe-turbine system is free of characteristic resonance frequencies and the pressure signal is transmitted along the pipe up to the turbine inlet section practically without any changes.
Authors and Affiliations
ALEKSANDER OLCZYK
Keywords
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