A Numerical Simulator of Unsteady Flow Velocity Profile in the Entrance Region of a Circular Pipe

Fan Liu, Masaru Uchiyama, Kyojiro Hakomori

    Research output: Contribution to journalArticlepeer-review

    Abstract

    In this paper, we present a numerical simulator of unsteady flow velocity profile in the entrance region of a circular pipe by means of finite difference method (FDM). The simulator is useful in verifying the accuracy of velocity profiles estimated by the model-based technique proposed by us, since an approximated fluid line model of the entrance region in the pipe is used for the technique. The accuracy of the simulator itself is verified by comparing velocity profiles obtained by the simulator with (1) an analytical solution for fully developed flow and (2) experimental results for the entrance flow. The experimental results were obtained by using a beam scanning laser Doppler velocimeter (BS-LDV) which was developed in our laboratory and which can measure the velocity profile on a line by scanning the laser beam in a very short period of time.

    Original languageEnglish
    Pages (from-to)3088-3093
    Number of pages6
    JournalTransactions of the Japan Society of Mechanical Engineers Series B
    Volume54
    Issue number507
    DOIs
    Publication statusPublished - 1988 Jan 1

    Keywords

    • Dynamic Fluid Line Model
    • Entrance Flow
    • Finite Difference Method
    • Flow Velocity Profile
    • Laser Doppler Velocimeter

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Mechanical Engineering

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