Apparatus for measuring the local void fraction in a flowing liquid containing a gas
Patent
·
OSTI ID:6763741
The local void fraction in liquid containing a gas is measured by placing an impedance-variation probe in the liquid, applying a controlled voltage or current to the probe, and measuring the probe current or voltage. A circuit for applying the one electrical parameter and measuring the other includes a feedback amplifier that minimizes the effect of probe capacitance and a digitizer to provide a clean signal. Time integration of the signal provides a measure of the void fraction, and an oscilloscope display also shows bubble size and distribution.
- DOE Contract Number:
- W-31-109-ENG-38
- Assignee:
- Dept. of Energy
- OSTI ID:
- 6763741
- Country of Publication:
- United States
- Language:
- English
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