A NEW METHOD FOR DETERMINING THE CRITICAL SHEAR RATE IN RHEDLOGICAL MODEL OF COAL-WATER SLURRY

ZHAO Guo-hua; DUAN Yu-fengSouth-east China University

doi:10.19666/j.rlfd.2008.02.007

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A NEW METHOD FOR DETERMINING THE CRITICAL SHEAR RATE IN RHEDLOGICAL MODEL OF COAL-WATER SLURRY

更新时间：2025-09-28

- A NEW METHOD FOR DETERMINING THE CRITICAL SHEAR RATE IN RHEDLOGICAL MODEL OF COAL-WATER SLURRY
- Thermal Power Generation Issue 2, Pages: 32-34(2008)
- 作者机构：
  
  东南大学
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.2008.02.007
  CLC： TQ531
- Published：2008
- 稿件说明：
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ZHAO Guo-hua, DUAN Yu-fengSouth-east China University. A NEW METHOD FOR DETERMINING THE CRITICAL SHEAR RATE IN RHEDLOGICAL MODEL OF COAL-WATER SLURRY[J]. Thermal power generation, 2008, (2): 32-34.
DOI：

ZHAO Guo-hua, DUAN Yu-fengSouth-east China University. A NEW METHOD FOR DETERMINING THE CRITICAL SHEAR RATE IN RHEDLOGICAL MODEL OF COAL-WATER SLURRY[J]. Thermal power generation, 2008, (2): 32-34. DOI： 10.19666/j.rlfd.2008.02.007.

摘要

水煤浆是一种高粘性、不透明的液固分散悬浮液

表现出非牛顿特性

其流变特性十分复杂。在低剪切速率下

对水煤浆粘度测量发现剪切速率与剪切应力关系曲线的变化趋势突变。根据Herschel-Bulkley模型

运用一种新方法确定水煤浆的临界剪切速率

结合旋转粘度计法和管流法在广范围剪切速率下得出水煤浆的真实流变方程。

Abstract

The coal-water slurry is a solid-liquid suspension with high viscosity and opacity

which features property of non-newtonian fluid

boasting very complex rheological property.Under low shear rate

the tendency of relation curve between the shear rate and the shearing stress breaks in the measurement of viscosity for coal-water slurry.Based on the Herschel-Bulkley model

the critical shear rate is obtained by a new method.By combining the method of rotary viscometer with the method of pipe flow

the true rheological equation has been gained in a wide range of the shear rate.

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