Power Consumption for Agitating Viscoelastic Liquids with Helical Ribbon Impellers

朱秀林; 王凯; 潘祖仁

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Power Consumption for Agitating Viscoelastic Liquids with Helical Ribbon Impellers

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- Power Consumption for Agitating Viscoelastic Liquids with Helical Ribbon Impellers
- CIESC Journal Issue 5, (1989)
- 作者机构：
  
  浙江大学化工系,浙江大学化工系,浙江大学化工系杭州苏州大学化学系,,杭州,杭州
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 October 1989，
  
  Published：25 October 1989
- 稿件说明：
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朱秀林, 王凯, 潘祖仁. Power Consumption for Agitating Viscoelastic Liquids with Helical Ribbon Impellers[J]. CIESC Journal, 1989, (5).
DOI：

朱秀林, 王凯, 潘祖仁. Power Consumption for Agitating Viscoelastic Liquids with Helical Ribbon Impellers[J]. CIESC Journal, 1989, (5). DOI：

摘要

本文研究了层流区内外单螺带-锚、四螺带-锚桨叶在粘弹性流体中的搅拌功率消耗。与牛顿型流体比较结果表明

流体的弹性对搅拌功率有较大的影响。Boger流体较牛顿型流体的功率消耗大50％以上。本文采用了广义二阶流体本构方程导出搅拌功率计算式: 用实验数据确定f_3和F_(1av)~*

得到了适用于牛顿型流体、假塑性流体和粘弹性流体的功率计算式。计算结果与实验值比较接近。

Abstract

The power consumption for agitating viscoelastic fluids including Boger fluids and Newtonian fluids in the laminar regime were compared for the inner-and-outer helical ribbon-anchor and the four helical ribbon-anchor impellers. The influence of elasticity on power consumption is significant. For Boger fluids the power consumption could be up to 1.5 times of that fro Newtonian fluids.The power consumption correlations:for agitating Newtonian

pseudoplastic and viscoelastic fluids was developed by means of a second-order elastic fluid rheological model. The parameters f_v

f_s and F~*_(1av) were determined experimentally. The predicted results agree with experimental data.

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