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- Title
Investigating Pressure Gradient Dynamics in Two-phase Fluid Flow through Porous Media: An Experimental and Numerical Analysis.
- Authors
Ashouri, H.; Mohammadiun, H.; Mohammadiun, M.; Sabet, G. Shafiee; Bonab, M. H. Dibaee; Sabbaghzadeh, F.
- Abstract
This study investigates pressure gradient dynamics within a porous medium in the context of two-phase fluid flow, specifically water and sand particle interactions. Using experimental data, we refine pressure correction coefficients within a numerical solution framework, employing the Semi-Implicit Method for the Pressure-linked Equations algorithm. Our findings highlight the relative nature of pressure gradient phenomena, with particle size and volume fraction emerging as crucial determinants. Graphical representations reveal a clear trend: an increase in volume fraction, up to 40%, across varying Reynolds Numbers, leads to a transition towards non-Newtonian behavior in the two-phase fluid system. Unlike the linear pressure gradient seen in single-phase fluid flow, the interplay between liquid and solid phases, along with drag forces, imparts a distinctly nonlinear trajectory to the pressure gradient in two-phase fluid flow scenarios. As the two-phase flow enters a porous medium, numerous factors come into play, resulting in a pressure drop. These factors include changes in cross-sectional geometry, alterations in boundary layer dynamics, and ensuing momentum fluctuations. Interestingly, an increase in porosity percentage inversely correlates with pressure gradient, resulting in reduced pressure gradient with higher porosity levels.
- Subjects
FLUID flow; POROUS materials; SINGLE-phase flow; BOUNDARY layer (Aerodynamics); PRESSURE drop (Fluid dynamics); DRAG force; TWO-phase flow; NON-Newtonian fluids
- Publication
Journal of Applied Fluid Mechanics, 2024, Vol 17, Issue 7, p1499
- ISSN
1735-3572
- Publication type
Article
- DOI
10.47176/jafm.17.7.2360