Visualization of Flows Normal to Slot-Perforated Plate Bundles.

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  • 短冊板群流路内における噴流の可視化
  • タンザクバングン リュウロ ナイ ニ オケル フンリュウ ノ カシカ

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Abstract

Authors have disclosed the flow characteristics of network ducts with which the slot-perforated plate bundles in three rows are arranged in different types. An experimental study was performed to disclose the flow characteristics in network ducts of the slot-perforated plate bundles with which the intersecting angles connecting the centers of gaps of their plates are 30°and 60°, Yespectively. The depth of their ducts was almost the same as the relative length of their plates. The flow patterns were visualized using the tracer method and the velocity variations in the flow field were measured using two-dimensional laser Doppler velocimetry. The secondary flow with vortices and the resulting oscillation of main streams are visualized in the plate bundles. The characteristics of hydraulic resistance and dominant frequency for power spectrum in their ducts are also determined.

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