Streakline flow visualization with neutron radiography.

John Michael Cimbala, D. Sathianathan

    Research output: Contribution to journalArticle

    Abstract

    Although flow visualisation is an extremely useful tool in fluid mechanics research, many practical fluid flow problems have limited optical access for visualisation. A technique was 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 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)
    JournalEXP. FLUIDS
    Volume6
    Issue number8 , 1988, p.547-552.
    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, J. M., & Sathianathan, D. (1988). Streakline flow visualization with neutron radiography. EXP. FLUIDS, 6(8 , 1988, p.547-552.).
    Cimbala, John Michael ; Sathianathan, D. / Streakline flow visualization with neutron radiography. In: EXP. FLUIDS. 1988 ; Vol. 6, No. 8 , 1988, p.547-552.
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    Cimbala, JM & Sathianathan, D 1988, 'Streakline flow visualization with neutron radiography.', EXP. FLUIDS, vol. 6, no. 8 , 1988, p.547-552..

    Streakline flow visualization with neutron radiography. / Cimbala, John Michael; Sathianathan, D.

    In: EXP. FLUIDS, Vol. 6, No. 8 , 1988, p.547-552., 01.01.1988.

    Research output: Contribution to journalArticle

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    Cimbala JM, Sathianathan D. Streakline flow visualization with neutron radiography. EXP. FLUIDS. 1988 Jan 1;6(8 , 1988, p.547-552.).