Theoretical Analysis on the Flow Inside a New Beadless Disperser

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  • メディアレス新型分散機分散部における流れの理論解析
  • メディアレス シンガタ ブンサンキ ブンサンブ ニ オケル ナガレ ノ リロン カイセキ

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Abstract

In this paper, a theoretical analysis on the flow over micro-clearance between stationary disk and rotating disk at small mass flow rate was studied for the improvement of dispersion performance of a new headless disperser. <BR>As the results of this study, characteristics of the flow over the dispersion part of the new beadless disperser were found to be expressed as follows. <BR>(1) The feature of the flow at a small clearance depends on Reynolds number and dimensionless mass flow rate. <BR>(2) The friction moment coefficient of the rotating disk at a small mass flow rate can be calculated by the following equation. <BR>CM=M/1/2pΩ2R25=π/Rer·R2/h [1- (R1/R2) 4] <BR>(3) When the mass flow rate is smaller than a certain value, adverse flow occurs near outlet. <BR>Incorporation of those theoretical analysis results into the design of the dispersion part of a high-performance disperser was found to improve the dispersion efficiency.

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