Apparatus for measuring the local void fraction in a flowing liquid containing a gas
Abstract
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.
- Inventors:
- Issue Date:
- OSTI Identifier:
- 6763741
- Assignee:
- Dept. of Energy
- DOE Contract Number:
- W-31-109-ENG-38
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; TWO-PHASE FLOW; VOID FRACTION; MEASURING INSTRUMENTS; DESIGN; OSCILLOGRAPHS; ELECTRONIC EQUIPMENT; EQUIPMENT; FLUID FLOW; 420400* - Engineering- Heat Transfer & Fluid Flow
Citation Formats
Dunn, P F. Apparatus for measuring the local void fraction in a flowing liquid containing a gas. United States: N. p., 1979.
Web.
Dunn, P F. Apparatus for measuring the local void fraction in a flowing liquid containing a gas. United States.
Dunn, P F. Tue .
"Apparatus for measuring the local void fraction in a flowing liquid containing a gas". United States.
@article{osti_6763741,
title = {Apparatus for measuring the local void fraction in a flowing liquid containing a gas},
author = {Dunn, P F},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1979},
month = {7}
}
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