Numerical investigation of turbulent flow pulsation in compound rectangular channels

Seong Ho Hong, Jeong Sik Seo, Jong Kuen Shin, Young Don Choi

    Research output: Contribution to conferencePaperpeer-review

    2 Citations (Scopus)

    Abstract

    In the present article, we investigate numerically turbulent flow pulsation through compound rectangular channels. RANS, URANS and LES are employed for unsteady turbulence modelling. Strong large-scale quasi-periodic flow oscillations are observed in most of the channels. Such large-scale flow oscillations in compound rectangular channels are similar to the quasi-periodic flow pulsation through the gaps between fuel rod bundle in nuclear reactor. There is a strong peak in the power density spectrum of the axial velocity component. LES gives better predictions for the axial mean velocity distribution than those of URANS. The large scale cross motions through the rectangular compound channels induce significant heat transfer enhancement of the compound channel flow.

    Original languageEnglish
    Pages511-516
    Number of pages6
    Publication statusPublished - 2009
    Event6th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2009 - Seoul, Korea, Republic of
    Duration: 2009 Jun 222009 Jun 24

    Other

    Other6th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2009
    Country/TerritoryKorea, Republic of
    CitySeoul
    Period09/6/2209/6/24

    Bibliographical note

    Funding Information:
    This work was supported by grant No. KSC-2009-S01-0006 from Korea Institute of Science and Technology Information.

    Publisher Copyright:
    © 2009 TSFP4 Symposium. All Rights Reserved.

    ASJC Scopus subject areas

    • Fluid Flow and Transfer Processes

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