STEADY-SHEAR VISCOSITY AND TRANSIENT STRESS RESPONSE FOR ELASTO-THIXOTROPIC FLUIDS

被引：2

作者：

Fang Tunan

Carlos Tiu Department of Chemical Engineering East China University of Chemical Technology Shanghai China Department of Chemical Engineering Monash University Clayton Victoria Australia ^{[3168
]}

机构：

来源：

Acta Mechanica Sinica | 1991年 / 01期

关键词：

elasto-thixotropic fluid; Theological model; steady-shear viscosity; transient stress response;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

<正> A phenomenological model for dispersed systems which exhibit complex theological behavioursuch as shear and time-dependent viscosity, yield stress, and elasticity is proposed. The model extends theQuemeda model to describe the viscosity function with a structural parameter λ which varies according to differ-ent kinetic orders of particle aggregation and segregation. The transient stress response is obtained by solvingan instantaneous Maxwell model with an assumed shear modulus function G of the same form as the viscosityfunction η. Accuracy of the proposed model is verified experimentally with the results obtained for twooil (creosote)/water emulsions. The model that gives the best fit of experimental data appears to be the onewith kinetic orders n = m = 2.

引用

页码：46 / 50

页数：5