Computational analysis of gas permeability of slip flow through microannulus replete by based‐circular Sierpinski porous medium

Abstract

There are wide applications for flow in a microporous medium. In this study, a computational analysis of airflow through a porous microannulus constructed by circular‐based Sierpinski has been performed in a slip flow regime, where several parameters played an important role in the flow characteristics. These parameters are the Knudsen number, the average friction factor, radius ratio, and porosity. The impacts of these parameters on permeability and the gas flow characteristics are examined and analyzed thoroughly. The ranges of the investigated parameters are as follows (0.001 ≤ Kn ≤ 0.1 and the porosity range is 0.75 ≤ ε ≤ 0.95). The results showed that porosity has a significant impact on the velocity distribution and Darcy number. The Knudsen number has also a direct effect on the velocity distribution, while it has a positive logarithmic proportionality with a dimensionless permeability but the radius ratio does have a neglected effect on the Darcy number. Moreover, the effect of the average friction factor has an inverse proportional relationship to the Darcy number.

Effect of porous slab thickness and Darcy number on thermohydraulic transport characteristics of Ag–TiO2/water hybrid nanofluid flow‐through partially porous wavy channels

“…Because of their low cost, passive technologies are commonly used in industrial manufacturing. Finned tube, 1,2 contoured tube, inserts, corrugated tube, 3,4 porous media flow, 5,6 converging and diverging channels, 7 and nonfluids flow 8,9 are all commonly used passive technologies. Vicente et al 10 investigated the heat transmission and flow rates of ten various types of corrugated tubes.…”