Dynamic viscosity of water

The dynamic viscosity of water can be calculated using the following equation (Reid et al., 1988) ... 

Hint In case you need values for the dynamic viscosity of water they are listed in Appendix B as a function of temperature T. 

Figure 17,1 Dynamic viscosity of water at 20 C (top line) and 80°C (bottom line).

The considered radial process in the bentonite annulus is a complicated one with coupled, highly nonlinear flows that involve many things. There are liquid flow and vapor flow as well as conductive and convective heat flow depending on gradients in pressure, water vapor density and temperature. The flow coefficients depend on water properties such as saturation water vapor pressure and dynamic viscosity of water. They also depend on the properties of bentonite water retention curve, hydraulic conductivity and water vapor diffusion coefficient, and thermal conductivity, all of which are functions of degree of water saturation. 

The fluidity of a liquid, its rate of flow under a pressure gradient, is the reciprocal of its viscosity. The dynamic viscosity of water, jjw, although rather small compared with that of other liquids, is caused by the extensive network of hydrogen bonds existing in it that must be partly broken for the water to flow (Jenkins and Marcus 1995 Marcus 2009a). Ions affect the dynamic viscosity of the solution, n], some electrolytes enhancing it whereas others diminishing it. The effect is described up to fairly concentrated solutions by the Jones-Dole expression (Jones and Dole 1929) ... 

Watson, XT.R., Basu, R.S., Sengers, XV. (1980). An improved representation equation for the dynamic viscosity of water substance. Journal of Physical and Chemical Reference Data, 9, 1255-1290. 

Dynamic viscosities of water/sucrose laurate/ethoxylated mono-di-glyceride/oil + ethanol systems studied at 25°C are presented in Figure 5.16. The oils were R (+)-LIM... 

Using Equation 4-22, determine the correction for the friction factor for the portion of solids in a slurry mixture of uniform size distribution. The slurry is pumped at the rate of 16,000 gpm in a rubber-lined 22.75" ID pipe. The volumetric concentration is 22%. Assume Kf = 85 and Cn=0. 45. Use the Swain-Jaime equation to determine /). The specific gravity of the solids is 2.65. The dynamic viscosity of water is 2.7 x lO" Ibf-sec/ft. ... 

The dynamic viscosity is corrected to take in account the presence of fines at a volumetric concentration of 0.089. The dynamic viscosity of water is 1.2 cP, the Einstein-Thomas equation is applied ... 

V = total volume produced AP = transmembrane pressure p = dynamic viscosity of water A = membrane area... 

HjO = hydraulic permeability coefficient of water M-H20 = dynamic viscosity of water... 

Fig. 2.5 Temperature dependence of the dynamic viscosity of water. Values from [36]...

FIGURE 5.4 Dynamic viscosity of water as a function of temperature. (Data from Perry, R.H. and Green, D.W. 1997. Perry s Chemical Engineers Handbook, 7th Ed., McGraw-Hill, Columbus, OH.)... 

Diffusion coefficient of hydrogen in water. At 298 K, the diffusion constant of hydrogen in water is 5.85 x 10" cmVs Perry and Chilton 1973). Correcting for temperature using >h2 Pw/7 = constant Logan 1999) where p , is the dynamic viscosity of water at temperature T (K), we calculate at 303 K the diffusion coefficient is... 

Fig. 2.4 Effect of temperature on surface tension and dynamic viscosity of water, data from [14]...

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