The first term in the above equation represents the
viscous flow. The second term caters for Knudsen diffusion whereas the third term describes the surface diffusion that occurs in the pores.
It shows that the apparent activation energies ([E.sub.w]) decrease with increasing Ti[O.sub.2] and FeO content, indicating that the reduce of energy barrier for
viscous flow and the formation of some simpler structural units in the slags [20, 21].
Among the four Cu-Sn alloys, [Cu.sub.80][Sn.sub.20] and [Cu.sub.70][Sn.sub.30] alloys have higher [E.sub.a,V] (the activation energy for
viscous flow), [E.sub.a,D] (the activation energy for structural evolution), and y (the slope of the linear relationship of D/[eta] with temperature) due to the more [Cu.sub.3]Sn clusters formation in [Cu.sub.80][Sn.sub.20] and [Cu.sub.70][Sn.sub.30] melts than the other two Cu-Sn alloys.
Song, "Amphoteric behavior of alumina in
viscous flow and structure of CaO-Si[O.sub.2] (-MgO)-[Al.sub.2][O.sub.3] slags," Metallurgical and Materials Transactions B, vol.
Viscous Flow. The total shale gas flux is composed of a
viscous flow flux and a Knudsen diffusion flux component.
Parallel computation of unsteady three-dimensional incompressible
viscous flow using an unstructured multigrid method, Computers and Structures 82: 2425-2436.
The static pressure measurements at the lower surface of the 14-X B model are compared with the static pressure evaluated at the same freestream conditions via no
viscous flow, calorically perfect air ([gamma] = 1.4) oblique shock wave relationships, and computational fluid dynamics (CFD) simulations using the ANSYS FLUENT software (Figure 9).
The test problem used was that of a three-dimensional unsteady laminar
viscous flow with heat and mass transfer due to a stretching sheet in a rotating fluid.