Numerical Analsis of Density Wave in Dense Gas-Solid Flows in a Vertical Pipe

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概要

• 論文の詳細を見る

• Dense gas-solid flows in a vertical pipe are important relating to many industrial applications ; for example, standpipe flows in circulating fluidized beds or vertical plug flows in pneumatic conveying systems. In such flows, particles do not disperse uniformly in the pipes but form clusters, or generate density waves. Experimental and numerical studies have been performed for small-scale standpipe flows, and a power law have been found in power spectra of the density waves. In the present work, we analyzed the density wave in an industrial-scale vertical pipe, and found the similar power law in it although the value of the exponent was different from that of the previous works for small-scale systems. We also performed a numerical simulation based on the discrete element method (DEM) couple with CFD. The calculated value of the exponent agreed quantitatively with that in the corresponding experiment. The effect of the gas velocity on flow structure was also investigated.

• 理論物理学刊行会の論文
• 2000-04-28

著者

• Tsuno Y

  Kyushu Univ. Fukuoka

• Tsuji Y

  Department Of Mechanophysics Engineering Graduate School Of Engineering Osaka University.

• KAWAGUCHI Toshihiro

  Department of Physics and Mathematics, Aoyama Gakuin University

• Tsuji Yutaka

  Department Of Mechanical Engineering Osaka University

• Tsuno Y

  Institute For Fundamental Research Of Organic Chemistry Kyushu University

• TANAKA TOSHITSUGU

  Department of Mechanophysics Engineering, Faculty of Engineering, Osaka University

• Tanaka Toshitsugu

  Department Of Mechanophysics Engineering Graduate School Of Engineering Osaka University.

• Tanaka Toshitsugu

  Department Of Food Chemistry Kobe Institute Of Health

• Tsuji Yutaka

  Department Of Mechanical Engineering For Industrial Machinery Osaka University

• Takai Y

  The Institute Of Scientific And Industrial Research Osaka University

• Tsuno Y

  Kyushu Univ. Fukuoka Jpn

• Tsuno Yuho

  Institute For Molecular Science

• KAWAGUCHI Takaaki

  Department of Technology, Faculty of Education, Shimane University

• Kawaguchi T

  Department Of Mechanophysics Engineering Graduate School Of Engineering Osaka University.

• Kawaguchi Toshihiro

  Department Of Astronomy Faculty Of Science Kyoto University

• KAWAGUCHI Toshihiro

  Department of Mechanical Engineering, Osaka University

• KAWAGUCHI Toshihiro

  Department of Astronomy, Graduate School of Science Kyoto University

• Kawaguchi Toshihiro

  Department of Mechanophysics Engineering, Faculty of Engineering, Osaka University

• Tsuji Yutaka

  Institute for Materials Chemistry and Engineering, Kyushu University

• Tsuji Yutaka

  Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University

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