Can I read Identifying the dominant transport mechanism in single nanoscale pores and 3D nanoporous media on EtoBox?

Identifying the dominant transport mechanism in single nanoscale pores and 3D nanoporous media by Ying Yin; Zhiguo Qu; Maša Prodanović; Christopher J. Landry is a Engineering article available to read on EtoBox.

What is Identifying the dominant transport mechanism in single nanoscale pores and 3D nanoporous media about?

Gas transport mechanisms can be categorized into viscous flow and mass diffusion, both of which may coexist in a porous media with multiscale pore sizes. To determine the dominant transport mechanism and its contribution to gas transport capacity, the gas viscous flow and mass diffusion processes are analyzed in single nanoscale pores via a theoretical method, and are simulated in 3D nanoporous media via pore-scale lattice Boltzmann methods. The apparent permeability from the viscous flow and apparent diffusivity from the mass diffusion are estimated. A dimensionless parameter, i.e., the diffusion-flow ratio, is proposed to evaluate the dominant transport mechanism, which is a function of the apparent permeability, apparent diffusivity, bulk dynamic viscosity, and working pressure. The results show that the apparent permeability increases by approximately two orders of magnitude when the average Knudsen number (Kn avg) of the nanoporous media or Knudsen number (Kn) of single nanoscale pores increases from 0.1 to 10. Under the same conditions, the increment in the apparent diffusivity is only approximately one order of magnitude. When Kn 10, the apparent diffusivity has an upper b

Who reads Identifying the dominant transport mechanism in single nanoscale pores and 3D nanoporous media?

Author

Ying Yin; Zhiguo Qu; Maša Prodanović; Christopher J. Landry

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Engineering (Physical Sciences)