viscous flow


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viscous flow

[′vis·kəs ′flō]
(fluid mechanics)
The flow of a viscous fluid.
The flow of a fluid through a duct under conditions such that the mean free path is small in comparison with the smallest, transverse section of the duct.
References in periodicals archive ?
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.
Perig and Golodenko (2016) have analyzed ECAE-driven viscous flow through an angular die of Segal geometry with 2[theta] = 90[degrees] through a direct numerical solution of the Navier-Stokes equations with respect to the physical variables "flow velocities u, v of viscous flow and ECAE punching pressure P" [20].
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).
Next, a study of the viscous flow over a shrinking sheet analytically solved using a second-order slip flow model was by Fang et al.
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.
Theoretically the LBM introduced above simulates the compressible viscous flow instead of incompressible viscous one, because the spatial density variation is not zero in LBM simulations.
The subject of the public tender is the assembly of equipment for carrying out reactions in molten thermoplastic material, which devices are used for plasticizing the material and transfer to the state of viscous flow, further to the homogenization of reactive and inert ingredients and additives, as well as to transfer to the required geometry of the sample suitable for subsequent further use of the prepared samples, especially for analysis or use in processing machines.