Measurement of average density and relative volumes in a dispersed two-phase fluid
An apparatus and a method are disclosed for measuring the average density and relative volumes in an essentially transparent, dispersed two-phase fluid. A laser beam with a diameter no greater than 1% of the diameter of the bubbles, droplets, or particles of the dispersed phase is directed onto a diffraction grating. A single-order component of the diffracted beam is directed through the two-phase fluid and its refraction is measured. Preferably, the refracted beam exiting the fluid is incident upon a optical filter with linearly varying optical density and the intensity of the filtered beam is measured. The invention can be combined with other laser-based measurement systems, e.g., laser doppler anemometry. 3 figs.
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- Patent Number(s):
- US 5110208; A
- Application Number:
- PPN: US 7-629961
- OSTI ID:
- 7273250
- Resource Relation:
- Patent File Date: 19 Dec 1990
- Country of Publication:
- United States
- Language:
- English
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Measurement of average density and relative volumes in a dispersed two-phase fluid
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Related Subjects
42 ENGINEERING
MEASURING INSTRUMENTS
DESIGN
MIXTURES
DENSITY
TWO-PHASE FLOW
VOLUME
LASER RADIATION
OPERATION
DISPERSIONS
ELECTROMAGNETIC RADIATION
FLUID FLOW
PHYSICAL PROPERTIES
RADIATIONS
440800* - Miscellaneous Instrumentation- (1990-)
420400 - Engineering- Heat Transfer & Fluid Flow