نتایج جستجو برای: permeability tensor

تعداد نتایج: 93176  

1998
ROMAN TOMASCHITZ

A phenomenological theory of gravitation is proposed\ based on a pre!relativistic approach to electromagnetism[ The general relativistic\ purely geometric\ spacetime conception is criticized[ Space itself is assumed to have physical substance[ This substance\ the ether\ manifests by its permeability[ Gravitational _elds do not curve space\ but rather distort the ether\ and so a}ect its permeabi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده علوم 1377

in the first chapter we study the necessary background of structure of commutators of operators and show what the commutator of two operators on a separable hilbert space looks like. in the second chapter we study basic property of jb and jb-algebras, jc and jc-algebras. the purpose of this chapter is to describe derivations of reversible jc-algebras in term of derivations of b (h) which are we...

Journal: : 2023

the influence of permeability tensor upon drainage anisotropic soils under ponded water and steady recharge (rainfall) is theoretically investigated. Tensorial has led to formulation mixed type partial differential equations. Since there no analytical solution this problem, therefore solved numerically by method finite elements. The element implemented into a computer model which can be applied...

Journal: :Biomechanics and modeling in mechanobiology 2015
A Comerford K Y Chooi M Nowak P D Weinberg S J Sherwin

The medial layer of the arterial wall may play an important role in the regulation of water and solute transport across the wall. In particular, a high medial resistance to transport could cause accumulation of lipid-carrying molecules in the inner wall. In this study, the water transport properties of medial tissue were characterised in a numerical model, utilising experimentally obtained data...

2010
Christophe Van der Kelen Peter Göransson Nils-Erik Hörlin Marcus Wallenberg

The flow resistivity tensor, which is the inverse of the viscous permeability tensor, is one of the most important material properties for the acoustic performance of open cell foams, used in acoustic treatments. Due to the manufacturing processes, these foams are most often geometrically anisotropic. This paper discusses the estimation of the flow resistivity tensor using an improvement of a p...

Journal: :Fluid dynamics & materials processing 2022

This study clarifies the seepage characteristics of complex fractured pressure-sensitive reservoirs, and addresses a common technological problem, that is alteration permeability degree reservoir bed (known to be responsible for changes in direction velocity fluid flows between wells). On basis new equation considers fracture directional effect, an oil-gas-water three-phase mathematical model i...

Journal: :Transport in Porous Media 2021

Abstract Capillary dominated flow or imbibition—whether spontaneous forced—is an important physical phenomena in understanding the behavior of naturally fractured water-driven reservoirs (NFR’s). When water flows through fractures, it imbibes into matrix and pushes oil out pores due to difference capillary pressure. In this paper, we focus on modeling quantifying recovered from NFR’s imbibition...

Journal: :Applied sciences 2022

Based on the proposed calculation method for determining different dip angle fracture permeability coefficients derived from well flow vibration equation and self-developed slug test system, research in a field fractured rock mass was carried out based underground water sealed cavern project of National Huangdao Petroleum Reserve. The formation lithology site granite gneiss, fractures were not ...

2009
M. A. Alsunaidi

An additional tuning strategy for microstrip patch antennas on magnetized ferrite substrates is presented. It is shown that by introducing simple ground plane structures, the response of the patch antenna can be improved considerably. The analysis method is based on a 3D FDTD algorithm. The FDTD model utilizes the auxiliary differential equation approach to represent the frequency dependent per...

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