Fluid flow visualization with neutron radiography. [Using collimated beam of neutrons]

Miscellaneous · Tue Jan 01 00:00:00 EST 1991

OSTI ID:7291338

Sathianathan, D

A technique was developed that permits fluid flow to be visualized even where the flow is completely shrouded by metal. The technique employs real-time neutron radiography, which is similar to x-ray radiography except a collimated beam of neutrons is used. Various combinations of neutron-opaque tracer materials were tested with neutron-transparent fluid. Neutron opaque tracers, such as solid particles, fluid droplets, and streaklines were imaged through metal walls as they convected in neutron-transparent ambient fluid. Visualization of bubbles/voids were evaluated for possible future applications. Surface-flow patterns were also imaged by using neutron-opaque tufts. These techniques were evaluated for image contrast, resolution, and the ability to accurately track fluid flow fields. The techniques were also modeled to optimize contrast in various flow configurations. Imaging techniques such as real-time video, high speed video, and photographic techniques were evaluated for flow visualization applications. High-speed photographic techniques were developed to radiography instantaneous images of the flow fields.

• Research Organization: Pennsylvania State Univ., University Park, PA (United States)
• OSTI ID: 7291338
• Resource Relation: Other Information: Thesis (Ph.D.)
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
07 ISOTOPES AND RADIATION SOURCES
FLUID FLOW
FLOW VISUALIZATION
NEUTRON RADIOGRAPHY
PERFORMANCE
DISPLAY DEVICES
IMAGES
MEASURING METHODS
COMPUTER OUTPUT DEVICES
COMPUTER-GRAPHICS DEVICES
INDUSTRIAL RADIOGRAPHY
420400* - Engineering- Heat Transfer & Fluid Flow
070204 - Radiation Sources- Industrial Uses
Radiometric