Design And Testing Of Instrumentation For
Multi-phase Flow Sampling And Local Void
Fraction Measurement
Author(s)
Y. Yang & D. Telionis
Abstract
Instrumentation is available to obtain samples in two and three-phase flow and
then measure the local void fraction as well as the size and number density of
bubbles and/or particles. But in most cases, these methods interfere with the flow
and bias the sampling process. We have developed an isokinetic probe that can
take accurate samples without changing the sample’s composition. This is
achieved by aligning the probe’s intake nozzle with the flow’s local predominant
direction and matching its internal pressure with its hydrodynamic environment,
and hence equalizing the inside and outside velocities. Then the fluid sample’s
density is measured to calculate the local void fraction. The calibration procedure
and results as well as extensive test data obtained in a bubbly-flow tunnel and
flotation cells are presented and discussed.
Keywords flow sampling, void fraction measurement.
Keywords
Keywords flow sampling, void fraction measurement.
Related Book
Other papers in this volume
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