Computation Transport Phenomena in Chemical Engineering. Flow Structure and Heat Transfer Mechanism of Laminar Vortex Rolls Driven by Gravity Currents between Parallel Plates of Non-Uniform Wall Temperature.

  • Fujiwara Masahiro
    Department of Chemical Engineering, Himeji Institute of Technology
  • Fukui Keisuke
    Department of Chemical Engineering, Himeji Institute of Technology
  • Hirota Syouji
    Department of Chemical Engineering, Himeji Institute of Technology

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  • 流れの数値解析と化学装置のモデリング  壁面温度が水平横方向に急変する平行平板間における重力流に誘起された層流縦渦の流れ構造と伝熱機構
  • ヘキメン オンド ガ スイヘイ ヨコホウコウ ニ キュウヘン スル ヘイコウ

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Abstract

Laminar vortex rolls which occur between horizontal parallel plates, of which the temperature is not uniform in the lateral direction normal to the forced main flow, are investigated by means of a flow-visualization technique and 3-D steady state numerical calculation. It was found that the vortex rolls were driven by the horizontal gravity currents, which were caused by density difference in the lateral direction, and that the generation mechanism of the vortex rolls could be classified into four types. The effects of vortex rolls upon the local Nusselt number were also investigated.

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