Turbulent Transition Mechanisms of Natural Convection over Upward-Facing Horizontal Plates Turbulent Transition Mechanisms of Natural Convection over Upward-Facing Horizontal Plates

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Abstract

・rights:日本機械学会・rights:本文データは学協会の許諾に基づきCiNiiから複製したものである・relation:isVersionOf:http://ci.nii.ac.jp/naid/110003474231/

Turbulent transition mechanisms and heat transfer characteristics of the natural convection over heated, horizontal plate were investigated both experimentally and analytically. An unsteady, 3-D numerical analysis has been performed on the water flow over 150 mm-wide plate heated with constant heat flux. The analytical results showed that longitudinal vortices play a crucial role on the turbulent transition over the plate. The vortices appear first in the laminar boundary layer at certain distance from the leading edge. Then, they detach from the plate and become distorted toward downstream. Meanwhile, the flow and temperature fields over the plate were visualized experimentally. The results confirmed that the above transition actually occurs over the plate. Moreover, the local heat transfer coefficients predicted by the analysis coincide well with those measured by the experiments.

Journal

  • JSME International Journal Series B

    JSME International Journal Series B 44(1), 90-98, 2001-02-15

    The Japan Society of Mechanical Engineers

References:  10

Codes

  • NII Article ID (NAID)
    110003474231
  • NII NACSIS-CAT ID (NCID)
    AA10888815
  • Text Lang
    ENG
  • Article Type
    ART
  • ISSN
    13408054
  • NDL Article ID
    5669058
  • NDL Source Classification
    ZN11(科学技術--機械工学・工業)
  • NDL Call No.
    Z53-Y271
  • Data Source
    CJP  NDL  NII-ELS  IR  J-STAGE 
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