Measurement of average density and relative volumes in a dispersed two-phase fluid

Patent · Wed Jan 01 00:00:00 EST 1992

OSTI ID:868268

Sreepada, Sastry R ^[1]; Rippel, Robert R ^[2]

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1. Clifton Park, NY
2. late of Scotia, NY

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 varing 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.

• Research Organization: Knolls Atomic Power Laboratory (KAPL), Niskayuna, NY (United States)
• DOE Contract Number: AC12-76SN00052
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 5110208
• OSTI ID: 868268
• Country of Publication: United States
• Language: English

Related Subjects

measurement
average
density
relative
volumes
dispersed
two-phase
fluid
apparatus
method
disclosed
measuring
essentially
transparent
laser
beam
diameter
bubbles
droplets
particles
phase
directed
diffraction
grating
single-order
component
diffracted
refraction
measured
preferably
refracted
exiting
incident
optical
filter
linearly
varing
intensity
filtered
combined
laser-based
systems
doppler
anemometry
two-phase fluid
optical density
beam exit
optical filter
diffraction grating
laser beam
dispersed phase
phase fluid
relative volume
measurement systems
diffracted beam
beam exiting
average density
laser doppler
relative volumes
doppler anemometry
dispersed two-phase
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