Flow structure and mass transfer for a wavy channel in transitional flow regime.

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概要

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• The relationship between flow structure and mass transfer in a wavy channel was investigated in the range from laminar to turbulent flow. Laminar flow has a steady two-dimensional structure, but turbulent flow has an unsteady three-dimensional vortical structure. In particular, the flow field in a large recirculation vortex within the furrow of a wavy wall shows an intermittent reversed flow and a nonuniformity of flow in the spanwise direction for turbulent flow. The flow intermittency is closely related to the mass transfer, and a remarkable increment of mass transfer rate is induced near the flow reattachment point in the large recirculation vortex, which suggests a renewal of the concentration boundary layer because of the flow intermittency.

• 公益社団法人 化学工学会の論文

著者

• Kawamura Yuji

  Department Of Chemical Engineering Hiroshima University

• KAJIMOTO YOSHIHIKO

  Department of Chemical Engineering, Hiroshima University

• Nishimura Tatsuo

  Department of Applied Chemistry, Faculty of Engineering, Keio University

• NISHIMURA TATSUO

  Department of Chemical Engineering, Hiroshima University

• TARUMOTO ATSUSHI

  Department of Chemical Engineering, Hiroshima University

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