Читать книгу Agitator Design for Gas-Liquid Fermenters and Bioreactors - Gregory T. Benz - Страница 64

In laminar and transition flow, the apparent viscosity at the impeller can be evaluated using the average shear rate:

(3.27)

where K_M is the Metzner–Otto constant. There are some disagreements about what that constant is for various impellers. Table 3.1 is an average of some of the published numbers.

In turbulent flow, the shear rates may be higher, so the apparent viscosity may be less for most fluids.