# Method and apparatus for probing relative volume fractions

## Abstract

A relative volume fraction probe particularly for use in a multiphase fluid system includes two parallel conductive paths defining therebetween a sample zone within the system. A generating unit generates time varying electrical signals which are inserted into one of the two parallel conductive paths. A time domain reflectometer receives the time varying electrical signals returned by the second of the two parallel conductive paths and, responsive thereto, outputs a curve of impedance versus distance. An analysis unit then calculates the area under the curve, subtracts the calculated area from an area produced when the sample zone consists entirely of material of a first fluid phase, and divides this calculated difference by the difference between an area produced when the sample zone consists entirely of material of the first fluid phase and an area produced when the sample zone consists entirely of material of a second fluid phase. The result is the volume fraction. 9 figs.

- Inventors:

- Issue Date:

- Sponsoring Org.:
- USDOE, Washington, DC (United States)

- OSTI Identifier:
- 321187

- Patent Number(s):
- 5729123

- Application Number:
- PAN: 8-635,425

- Assignee:
- Dept. of Energy, Washington, DC (United States)

- Resource Type:
- Patent

- Resource Relation:
- Other Information: PBD: 17 Mar 1998

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; 42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; MULTIPHASE FLOW; PROBES; MEASURING METHODS; ELECTRIC CONDUCTORS; VOLUME; DESIGN

### Citation Formats

```
Jandrasits, W G, and Kikta, T J.
```*Method and apparatus for probing relative volume fractions*. United States: N. p., 1998.
Web.

```
Jandrasits, W G, & Kikta, T J.
```*Method and apparatus for probing relative volume fractions*. United States.

```
Jandrasits, W G, and Kikta, T J. Tue .
"Method and apparatus for probing relative volume fractions". United States.
```

```
@article{osti_321187,
```

title = {Method and apparatus for probing relative volume fractions},

author = {Jandrasits, W G and Kikta, T J},

abstractNote = {A relative volume fraction probe particularly for use in a multiphase fluid system includes two parallel conductive paths defining therebetween a sample zone within the system. A generating unit generates time varying electrical signals which are inserted into one of the two parallel conductive paths. A time domain reflectometer receives the time varying electrical signals returned by the second of the two parallel conductive paths and, responsive thereto, outputs a curve of impedance versus distance. An analysis unit then calculates the area under the curve, subtracts the calculated area from an area produced when the sample zone consists entirely of material of a first fluid phase, and divides this calculated difference by the difference between an area produced when the sample zone consists entirely of material of the first fluid phase and an area produced when the sample zone consists entirely of material of a second fluid phase. The result is the volume fraction. 9 figs.},

doi = {},

journal = {},

number = ,

volume = ,

place = {United States},

year = {1998},

month = {3}

}