Highly efficient and versatile computational electromagnetic analysis of 3-D transformation-based metamaterial cloaking structures based on a hybridization of a higher order finite element method for discretization of the cloaking region and a higher order method of moments for numerical termination of the computational domain is proposed and demonstrated. The technique allows for an effective ...

In mathematical models of ow through porous media, the coe cients typically exhibit severe variations in two or more signi cantly di erent length scales. Consequently, the numerical treatment of these problems relies on a homogenization or upscaling procedure to de ne an approximate coarse-scale problem that adequately captures the in uence of the ne-scale structure. Inherent in such a procedur...

In this work, a complete work flow from pore-scale imaging to absolute permeability determination is described and discussed. Two specific points are tackled, concerning (1) the mesh refinement for a fixed image resolution and (2) the impact of the determination method used. A key point for this kind of approach is to work on enough large samples to check the representativity of the obtained ev...

permeability can be directly measured using cores taken from the reservoir in the laboratory. due to high cost associated with coring, cores are available in a limited number of wells in a field. many empirical models, statistical methods, and intelligent techniques were suggested to predict permeability in un-cored wells from easy-to-obtain and frequent data such as wireline logs. the main obj...

We present a general method for retrieving the effective tensorial permittivity of uniaxially anisotropic metamaterials. By relaxing the usually imposed constraint of assuming nonmagnetic metal/dielectric metamaterials, we also retrieve the effective permeability tensor and show that multilayer hyperbolic metamaterials exhibit a strong and broadband diamagnetic response in the visible regime. T...

Resin Transfer Molding (RTM) is a polymer composite processing technique widely used in the aeronautics and automotive sectors. This paper describes the numerical simulation of the RTM process where Darcy’s law was used for the mathematical formulation of the problem. A control volume finite element method was used for the determination of pressure gradients inside the mold, and a geometric rec...

A reiterative technique is developed for finding in normalized form the differential phase shift provided by the circular waveguide, completely filled with azimuthally magnetized ferrite which propagates normal TE01 mode. It consists in a repeated numerical solution of the structure’s characteristic equation, derived in terms of a definite complex Kummer confluent hypergeometric function, follo...

Abstract The magnetic polarizability tensor (MPT) is an economical characterisation of a conducting object, which can assist with identifying hidden targets in metal detection. MPT’s coefficients depend on multiple parameters interest including the object shape, size, electrical conductivity, permeability, and frequency excitation. computation follow from post-processing eddy current transmissi...