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Related Experiment Videos

Correlation of pulsed flow vortex shedding.

W J Dorson, D W Smith, V B Pizziconi

    Transactions - American Society for Artificial Internal Organs
    |January 11, 1975
    PubMed
    Summary

    Pulsed flow creates vortex shedding in indentations, enhancing mass transport. This technique shows promise for membrane separation processes, particularly in ultrafiltration of plasma streams.

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    Area of Science:

    • Fluid Dynamics
    • Chemical Engineering
    • Membrane Science

    Background:

    • Vortex shedding is a fluid dynamics phenomenon.
    • Mass transport augmentation is crucial for membrane separation processes.
    • Pulsed flow can influence flow patterns.

    Purpose of the Study:

    • To develop an empirical correlation for vortex shedding from indentations.
    • To assess the practicality of pulsed flow for mass transport augmentation in membrane separations.
    • To investigate the relationship between steady and pulsed flow rates for vortex shedding.

    Main Methods:

    • Flow visualization experiments were conducted.
    • An empirical correlation was developed based on experimental data.
    • The study analyzed conditions for vortex shedding relative to flow reversal.

    Main Results:

    • A correlation for vortex shedding from indentations was established.
    • The peak pulse flow rate for vortex shedding varies with steady flow rate.
    • Vortex shedding occurs near flow reversal conditions at high steady flow rates.

    Conclusions:

    • The developed correlation can assess the utility of pulsed flow for mass transport.
    • Vortex shedding significantly augments transport in plasma ultrafiltration.
    • Further research is recommended to deepen the understanding of vortex shedding phenomena.

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