G051033 ステレオPlVによる気泡の周囲液相流動の可視化と瞬時物質移動の考察([G051-03]流体工学部門,一般セッション : 混相流一分子動力学他)

DOI Web Site

書誌事項

タイトル別名
  • G051033 Visualization of liquid flow around a bubble via Stereo-PIV and consideration of instantaneous mass transfer from the bubble

抄録

The purpose of this study is to clarify the mutual relationship among the bubble motion, the surrounding liquid motion and the instantaneous mass transfer from the bubble to the liquid phase. For this specific purpose, the zigzag motion of the bubble were captured with high spatial resolution by a pair of high speed cameras, and instantaneous changes in volume and surface area of the bubble were obtained from the captured images by our originally developed method. The instantaneous mass transfer from the bubble to the surrounding liquid was enhanced at a section around the second inversion point. The enhancement in the mass transfer on the right side surface was dominant; hence the instantaneous mass transfer coefficient increased. In addition, in order to obtain the liquid motion induced by the bubble, Stereo-PIV measurement was conducted. As a result, the vortices were shed from the bubble rear in the sections. The vortices acted like transporting the liquid rich in dissolved CO_2 away from the bubble rear. The convective transportation was promoted; consequently the mass transfer was enhanced.

収録刊行物

  • 年次大会

    年次大会 2013 (0), _G051033-1-_G051033-3, 2013

    一般社団法人 日本機械学会

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ