Streakline flow visualization with neutron radiography

John Michael Cimbala, D. Sathianathan

    Research output: Contribution to journalArticle

    4 Citations (Scopus)

    Abstract

    Although flow visualization is an extremely useful tool in fluid mechanics research, many practical fluid flow problems have limited optical access for visualization. A technique has been developed which permits fluid flow to be visualized even in cases where the flow is completely shrouded by metal. The technique employs real-time thermal neutron radiography, which is similar to x-ray radiography except that a collimated beam of neutrons is used. Neutrons can easily penetrate metal casings, but are attenuated by elements such as hydrogen, boron, cadmium, and gadolinium. Various combinations of neutron-opaque tracer particles moving in neutron-transparent ambient fluids were tested for image contrast, resolution, and ability to accurately track the flow. Experiments in a simple pipe flow have demonstrated the feasibility of the technique. Namely, it was possible to visualize the motion of streaklines within a flow field shrouded by metal, which would not have been possible with any other technique.

    Original languageEnglish (US)
    Pages (from-to)547-552
    Number of pages6
    JournalExperiments in Fluids
    Volume6
    Issue number8
    DOIs
    StatePublished - Jan 1 1988

    Fingerprint

    Neutron radiography
    neutron radiography
    flow visualization
    Flow visualization
    Neutrons
    neutrons
    Metals
    fluid flow
    Flow of fluids
    metals
    casing
    pipe flow
    Boron
    fluid mechanics
    Gadolinium
    Radiography
    Fluid mechanics
    Pipe flow
    image contrast
    radiography

    All Science Journal Classification (ASJC) codes

    • Computational Mechanics
    • Mechanics of Materials
    • Physics and Astronomy(all)
    • Fluid Flow and Transfer Processes

    Cite this

    Cimbala, John Michael ; Sathianathan, D. / Streakline flow visualization with neutron radiography. In: Experiments in Fluids. 1988 ; Vol. 6, No. 8. pp. 547-552.
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    Streakline flow visualization with neutron radiography. / Cimbala, John Michael; Sathianathan, D.

    In: Experiments in Fluids, Vol. 6, No. 8, 01.01.1988, p. 547-552.

    Research output: Contribution to journalArticle

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