Viscosity equations for

Hui H. and Zhang Y. (2007) Toward a general viscosity equation for natural anhydrous and hydrous silicate melts. Geochim. Cosmochim. Acta 71, 403-416. 

The Eyring analysis presents some problems also. Suppose one accepts their suggestion that only the movement of segments between one pair of couples, that containing the chain center, serves to advance the chain. Then, to be consistent, the correct modification of the viscosity equation for small molecules is to replace K0 by nc K0 and A by A/n, rather than the original substitutions, K0- nK0 and A- A/n(E + 1). The result is... 

We ll call this equation the viscosity equation. Solving the viscosity equation for q will help us to understand the SI units of this quantity ... 

Quemada et al. (1985) proposed a viscosity equation for dispersed systems based on zero-shear, tjq, and infinite-shear, i oo> viscosities, and a structural parameter, k, dependent on the shear rate, that may be written as ... 

Taniguchi, H. (1995) Universal viscosity-equation for silicate melts over wide temperature range, J. Vole, and Geotherm. Res. 66, 1-8. 

A NEW FORM OF THE ANDRADE VISCOSITY EQUATION FOR PURE ORGANIC LIQUIDS. M.S. THESIS. 

This equation is analogous to Einstein-Simha viscosity equation for suspended particles of variable shapes (20,21). 

With the Cao et al. method and its large number of parameters, it is possible to fit the experimental viscosity data of most fluids, including hydrocarbons, within experimental error. Among the advantages claimed for this model are that it reduces to some well-known practical viscosity equations—for example, the empirical Andrade-like expression (Equation 4) with a particular choice of its parameters— and that it can be extended to mixtures without additional adjustable parameters. 

The viscosity of a liquid containing charged particulate—the colloidal suspension system has been found to increase to a considerable extent even without an external electric field. This can be demonstrated by comparing Eq. (91), the viscosity equation for charged spherical colloidal suspensions, with Hq. (54), the viscosity equation for uncharged spherical colloidal... 

This section could have followed section 1 in this chapter. The reason for placing it here is that the concepts and derivations developed in section 2 are needed for deriving the viscosity equation for polymeric electrolytes (polymer solutions) and polymer melts. Similar to the previous two sections, the viscosity of polyelectrolytes and polymer melts without an external electric field are discussed first, and then the viscosity of those materials under an external electric field or having strong surface charges are focused upon thereafter. 

Mehrotra, A.K. (1991a). A generalized viscosity equation for pure heavy hydrocarbons. Ind. Eng. Chem. Res., 30,420-427. 

Wilke, C. R. A viscosity equation for gas mixtures. Journal of Chemical Physics 18 517-519,1950. 

Hence, the viscosity equation for any fluid in capillary flow is given as follows ... 

Average molecular weight was determined by using the viscosity equations for heparin. 

---