TU Darmstadt / ULB / TUprints

Discrimination between Pore and Throat Resistances against Single-Phase Flow in Porous Media

Adloo, Hadi ; Foshat, Saeed ; Vaferi, Behzad ; Alobaid, Falah ; Aghel, Babak (2022)
Discrimination between Pore and Throat Resistances against Single-Phase Flow in Porous Media.
In: Water, 2022, 14 (7)
doi: 10.26083/tuprints-00021116
Article, Secondary publication, Publisher's Version

[img] Text
Copyright Information: CC BY 4.0 International - Creative Commons, Attribution.

Download (4MB)
Item Type: Article
Type of entry: Secondary publication
Title: Discrimination between Pore and Throat Resistances against Single-Phase Flow in Porous Media
Language: English
Date: 8 April 2022
Place of Publication: Darmstadt
Year of primary publication: 2022
Publisher: MDPI
Journal or Publication Title: Water
Volume of the journal: 14
Issue Number: 7
Collation: 20 Seiten
DOI: 10.26083/tuprints-00021116
Corresponding Links:
Origin: Secondary publication DeepGreen

This study investigates the critical agents that cause non-Darrian flow in porous media. Four porous media different in morphology but similar in topology were studied numerically. By varying the throat diameters, the distinct roles of pores and throats in total dissipation were investigated using direct numerical simulation. Forchheimer model was selected to analyze the non-Darcian flow. In our simplified geometry, the ratio KappKD can best be correlated by non-Darcy effect (E). Total dissipation is directly related to the porous medium resistance against fluid flow. The energy dissipated in pores and throats was calculated by summing the dissipation in each computational segment. Pores are more prone to disobey the Darcy model than throats due to irregularity in fluid flow, and they are introduced as the cause of Darcy-model cessation. By increasing the pore-to-throat ratio, the non-Darcian flow in the pores begins sooner. The results show that the energy dissipation due to eddies is negligible. The dissipation in pores and throats was simulated through separate power-law equations, and their exponents were also extracted. The exponent for the pore body is equal to two when the viscous forces are dominant, and it increases by increasing the inertia force. The dissipation due to pore bodies is more apparent when the size of pore and throats are of the same order of magnitude. The relative losses of pore body increase as the velocity increases, in contrast to throats.

Uncontrolled Keywords: single-phase flow, model porous medium, pore network analysis, non-Darcian flow, eddy formation, inertial core flow
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-211165
Classification DDC: 600 Technology, medicine, applied sciences > 620 Engineering and machine engineering
Divisions: 16 Department of Mechanical Engineering > Institut für Energiesysteme und Energietechnik (EST)
Date Deposited: 08 Apr 2022 11:28
Last Modified: 14 Nov 2023 19:04
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/21116
PPN: 500785422
Actions (login required)
View Item View Item