ESTIMATION OF MIXING TIME FOR HELICAL SCREW IMPELLERS WITH A DRAUGHT TUBE

朱秀林; 宋秋安; 王凯; 潘祖仁

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ESTIMATION OF MIXING TIME FOR HELICAL SCREW IMPELLERS WITH A DRAUGHT TUBE

更新时间：2025-12-16

- ESTIMATION OF MIXING TIME FOR HELICAL SCREW IMPELLERS WITH A DRAUGHT TUBE
- CIESC Journal Issue 4, (1992)
- 作者机构：
  
  苏州大学化工系,浙江大学化工系,浙江大学化工系,浙江大学化工系苏州215006,杭州310027,杭州310027,杭州,310027
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 August 1992，
  
  Published：25 August 1992
- 稿件说明：
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朱秀林, 宋秋安, 王凯, et al. ESTIMATION OF MIXING TIME FOR HELICAL SCREW IMPELLERS WITH A DRAUGHT TUBE[J]. CIESC Journal, 1992, (4).
DOI：

朱秀林, 宋秋安, 王凯, et al. ESTIMATION OF MIXING TIME FOR HELICAL SCREW IMPELLERS WITH A DRAUGHT TUBE[J]. CIESC Journal, 1992, (4). DOI：

摘要

采用单个悬浮粒子法测定了多种不同几何尺寸的螺杆-导流简搅拌器的循环时间分布.实验发现

该分布曲线一般呈单峰分布

基本上与Re数无关

可以用指数衰减函数表示成P(θ)=aexp[-a(θ-θ_0)]在层流区

衰减系放a_c与搅拌转速成正比a_c/N=c_5(常数)C_6是表征循环性能的一个参数(同频度).由回归分析得到c_5=1.62A_c~(0.260)(p/d_r)~(0.297)(d/d_r)~(4.460)/c_3可以由下式来估算搅拌器的混合时间c_1=-12.91nJ/(c_3c_5)

Abstract

The distributions of circulation time were obtained by means of a single suspend bead for sixteen types of helical screw impellers with a draught tube in the laminar regime. The distributions were almost independent of the Reynolds number and were characterized by a single peak.

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