نتایج جستجو برای: pulsatile flow darcy forchhmeir model

تعداد نتایج: 2491466  

2010
Nian-Sheng Cheng Zhiyong Hao Soon Keat Tan

The quadratic and power laws are two typical formulations that can be used to extend the Darcy law to non-Darcy flows through porous media. Both laws are reformulated in the dimensionless form in this study. They are then evaluated by fitting to experimental data with specified variations in seepage velocity, which were specifically collected for a simplified ordered porous model. The results s...

In this paper pulsatile laminar blood flow in an axisymmetric stenosed tube is simulated by the Non-Newtonian Power law model. Effect of stenosis, for severe condition of 75% reduction of local area was considered and the flow patterns for three Womersley numbers were studied. The results show that there is a fundamental difference in the flow pattern at . This difference is related to second c...

Journal: :journal of chemical and petroleum engineering 2013
morteza baghalha amin dehghan mohammad hosein zareenejad

water alternating gas (wag) technique is used in the petroleum industry to inject carbon dioxide (co2) into underground formations either for sequestration or enhanced oil recovery (eor) processes. co2 injection causes reactions with formation brine or aquifer and produces carbonic acid, the acid dissolves calcite and changes flow behavior significantly. modeling and investigating effects of co...

Journal: :Journal of controlled release : official journal of the Controlled Release Society 2013
Caroline C O'Brien Vijaya B Kolachalama Tracie J Barber Anne Simmons Elazer R Edelman

Drug-eluting stents reside in a dynamic fluid environment where the extent to which drugs are distributed within the arterial wall is critically modulated by the blood flowing through the arterial lumen. Yet several factors associated with the pulsatile nature of blood flow and their impact on arterial drug deposition have not been fully investigated. We employed an integrated framework compris...

Journal: :Applied Mathematics and Computation 2008
N. Merabet Hani I. Siyyam M. H. Hamdan

Three exact solutions are obtained for flow through porous media, as governed by the Darcy–Lapwood–Brinkman model, for a given vorticity distribution. The resulting flow fields are identified as reversing flows; stagnation point flows; and flows over a porous flat plate with blowing or suction. Dependence of the flow Reynolds number on the permeability of the flow through the porous medium is i...

2015
HERBERT EGGER

The goal of this short course is to review the analysis and the systematic discretization of saddlepoint systems that arise in the weak formulation of certain fluid flow problems by Galekrin methods. To demonstrate the applicability of the main arguments in various situations, we consider the slow flow of water through a channel surrounded by a porous aquiver. While the free flow of the fluid m...

2015
Yuanqing WU Amgad SALAMA Shuyu SUN

The acid treatment of carbonate reservoirs is a widely practiced oil and gas well stimulation technique. The injected acid dissolves the material near the wellbore and creates flow channels that establish a good connectivity between the reservoir and the well. Such flow channels are called wormholes. Different from the traditional simulation technology relying on Darcy framework, the new Darcy-...

2011
P. Bera Ashok Kumar

Least stable mode of convective flow, induced by external pressure gradient and buoyancy force in the vertical pipe filled with porous medium, is investigated. Non-Darcy Brinkman-extended model has been considered. To study least stable mode of the fully developed flow linear theory of stability analysis has been used for an wide range [0.01, 100] of Prandtl number (Pr). To this end, coupled or...

Journal: :Proceedings Of The Institution Of Mechanical Engineers, Part E: Journal Of Process Mechanical Engineering 2022

The present work deals with the impact of hybrid nanoparticles (Au-Al 2 O 3 ) on blood flow pattern through a porous cylindrical artery bell-shaped stenosis in presence an external magnetic field, Joule heating, and viscous dissipation by considering two-dimensional pulsatile flow. temperature-dependent viscosity model is utilized this study. assumed to be unsteady, laminar, viscous, incompress...

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