用落球法测量悬浮体表观粘度  

Measuring the Viscosity of Fluidized Suspension Using Falling Spheres

作　　者：韦鲁滨[1] 陈清如[1] 赵跃民[1] 

机构地区：[1]中国矿业大学化工与环境工程系

出　　处：《化工冶金》2000年第2期187-190,共4页

基　　金：国家自然科学基金!(编号:59774009);煤炭科学基金资助项目

摘　　要：采用落球法测量了密相气固流化床表现粘度，发现流化床的流变特性可用Ｂｉｎｇｈａｍ 粘塑性模型描述，床层的有效粘度可由下式计算： μｅ＝μ十ｒ０ｄｏ／３ｕｒ 通过实验数据求得线性回归公式，可算出塑性粘度和屈服应力．The viscosity of fluidized gas-solid dispersion was measured using falling spheres. The rheological characteristics can be described by the Bingham fluid model. The relationship between efficient viscosity of fluidized beds ue, plastic viscosity u, yield stress to, sphere size d. and relative velocity between falling sphere and fluidized particles ur is expressed as ue = u + t0do/3ur. The plastic viscosity and yield stress of fluidized dispersion can be obtained by linear regression of experimental data.

关 键 词：流化订 表观粘度 测量 落球法 悬浮体 

分 类 号：TQ051.13[化学工程] TQ021.1