Visualization of rotating vortex in a centrifugal blower impeller

D. Tsugita, C. K P Kowshik, Yutaka Ota

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    Rotating instability, RI, is a well-known unsteady phenomenon occurring in the off-design operation of various types of turbomachinery systems. However, the generation mechanism as well as its unsteady characteristics, especially in the case of centrifugal machines, has not yet been investigated in detail. In the present paper, therefore, research attention is focused on an unsteady vortex rotating along the impeller periphery, which is considered to be the cause of the RI, and its characteristics are investigated by experiments and two kinds of CFD analyses. A significant amplitude increase within a frequency band below the blade passing frequency is found to be caused by irregular change of the vortex rotating speed.

    Original languageEnglish
    Pages (from-to)207-214
    Number of pages8
    JournalJournal of Visualization
    Volume15
    Issue number3
    DOIs
    Publication statusPublished - 2012 Aug

    Fingerprint

    blowers
    Blowers
    Vortex flow
    Visualization
    vortices
    Turbomachinery
    Frequency bands
    turbomachinery
    Computational fluid dynamics
    charge flow devices
    blades
    causes
    Experiments

    Keywords

    • Centrifugal blower
    • Correlation analysis
    • Rotating instability
    • Rotating vortex

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Electrical and Electronic Engineering

    Cite this

    Visualization of rotating vortex in a centrifugal blower impeller. / Tsugita, D.; Kowshik, C. K P; Ota, Yutaka.

    In: Journal of Visualization, Vol. 15, No. 3, 08.2012, p. 207-214.

    Research output: Contribution to journalArticle

    Tsugita, D. ; Kowshik, C. K P ; Ota, Yutaka. / Visualization of rotating vortex in a centrifugal blower impeller. In: Journal of Visualization. 2012 ; Vol. 15, No. 3. pp. 207-214.
    @article{911f1a2b2a814e6d963c61ffb12a0176,
    title = "Visualization of rotating vortex in a centrifugal blower impeller",
    abstract = "Rotating instability, RI, is a well-known unsteady phenomenon occurring in the off-design operation of various types of turbomachinery systems. However, the generation mechanism as well as its unsteady characteristics, especially in the case of centrifugal machines, has not yet been investigated in detail. In the present paper, therefore, research attention is focused on an unsteady vortex rotating along the impeller periphery, which is considered to be the cause of the RI, and its characteristics are investigated by experiments and two kinds of CFD analyses. A significant amplitude increase within a frequency band below the blade passing frequency is found to be caused by irregular change of the vortex rotating speed.",
    keywords = "Centrifugal blower, Correlation analysis, Rotating instability, Rotating vortex",
    author = "D. Tsugita and Kowshik, {C. K P} and Yutaka Ota",
    year = "2012",
    month = "8",
    doi = "10.1007/s12650-012-0124-3",
    language = "English",
    volume = "15",
    pages = "207--214",
    journal = "Journal of Visualization",
    issn = "1343-8875",
    publisher = "Springer Heidelberg",
    number = "3",

    }

    TY - JOUR

    T1 - Visualization of rotating vortex in a centrifugal blower impeller

    AU - Tsugita, D.

    AU - Kowshik, C. K P

    AU - Ota, Yutaka

    PY - 2012/8

    Y1 - 2012/8

    N2 - Rotating instability, RI, is a well-known unsteady phenomenon occurring in the off-design operation of various types of turbomachinery systems. However, the generation mechanism as well as its unsteady characteristics, especially in the case of centrifugal machines, has not yet been investigated in detail. In the present paper, therefore, research attention is focused on an unsteady vortex rotating along the impeller periphery, which is considered to be the cause of the RI, and its characteristics are investigated by experiments and two kinds of CFD analyses. A significant amplitude increase within a frequency band below the blade passing frequency is found to be caused by irregular change of the vortex rotating speed.

    AB - Rotating instability, RI, is a well-known unsteady phenomenon occurring in the off-design operation of various types of turbomachinery systems. However, the generation mechanism as well as its unsteady characteristics, especially in the case of centrifugal machines, has not yet been investigated in detail. In the present paper, therefore, research attention is focused on an unsteady vortex rotating along the impeller periphery, which is considered to be the cause of the RI, and its characteristics are investigated by experiments and two kinds of CFD analyses. A significant amplitude increase within a frequency band below the blade passing frequency is found to be caused by irregular change of the vortex rotating speed.

    KW - Centrifugal blower

    KW - Correlation analysis

    KW - Rotating instability

    KW - Rotating vortex

    UR - http://www.scopus.com/inward/record.url?scp=84869501784&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=84869501784&partnerID=8YFLogxK

    U2 - 10.1007/s12650-012-0124-3

    DO - 10.1007/s12650-012-0124-3

    M3 - Article

    AN - SCOPUS:84869501784

    VL - 15

    SP - 207

    EP - 214

    JO - Journal of Visualization

    JF - Journal of Visualization

    SN - 1343-8875

    IS - 3

    ER -