Results 101 to 110 of about 55,201 (283)
Efficient Cartesian-Grid-Based Modeling of Rotationally Symmetric Bodies [PDF]
IEEE Transactions on Microwave Theory and Techniques, 2007 Axially symmetric waveguides, resonators, and scatterers of arbitrary cross section and anisotropy in the cross section can be modeled rigorously with use of 2-D Cartesian-grid-based codes by means of mere redefinition of material permittivity and permeability profiles.
openaire +2 more sources
Local Polynomial Regression and Filtering for a Versatile Mesh‐Free PDE Solver
International Journal for Numerical Methods in Fluids, EarlyView.A high‐order, mesh‐free finite difference method for solving differential equations is presented. Both derivative approximation and scheme stabilisation is carried out by parametric or non‐parametric local polynomial regression, making the resulting numerical method accurate, simple and versatile. Numerous numerical benchmark tests are investigated for
Alberto M. Gambaruto
wiley +1 more source
CFD Analysis of Dual‐Layer PCM Roofs for Thermal Mitigation in Residential Buildings
Heat Transfer, EarlyView.ABSTRACT This study presents a computational fluid dynamics analysis of dual‐layer phase change material (PCM) roofs for passive cooling in residential buildings under the hot and humid climate of Bangladesh. A three‐dimensional transient model was developed in ANSYS Fluent using the enthalpy–porosity approach to simulate coupled heat conduction ...
Mohammad Junaid +6 more
wiley +1 more source
Interaction Design and Architecture(s)GPS and digital mapping allow unprecedented accuracy, and the precision of digital storage has replaced the vagueness of the cartographer’s pencil.
Alan Dix
doaj +1 more source
Modelling and Simulation in Engineering, 2014 The vorticity-velocity formulation of the Navier-Stokes equations allows purely kinematical problems to be decoupled from the pressure term, since the pressure is eliminated by applying the curl operator.
Seung-Jae Lee +2 more
doaj +1 more source
Review of millimeter‐wave and terahertz near‐field synthetic aperture radar imaging technology
InfoScience, EarlyView.Abstract This paper comprehensively reviews the development of millimeter‐wave (MMW) and terahertz (THz) near‐field imaging technologies, with an emphasis on the state of synthetic aperture radar (SAR)‐based imaging technologies. Near‐field imaging technologies are categorized into passive and active imaging modes, among which active imaging is favored
Qi Yang +3 more
wiley +1 more source
Spherical Gravity Forwarding of Global Discrete Grid Cells by Isoparametric Transformation
MathematicsFor regional or even global geophysical problems, the curvature of the geophysical model cannot be approximated as a plane, and its curvature must be considered.
Shujin Cao +5 more
doaj +1 more source
Analytical solution to swing equations in power grids.
PLoS ONE, 2019 OBJECTIVE:To derive a closed-form analytical solution to the swing equation describing the power system dynamics, which is a nonlinear second order differential equation.
HyungSeon Oh, HyungSeon Oh
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Evolving spherical boson stars on a 3D Cartesian grid [PDF]
Physical Review D, 2004 12 pages, 13 figures. To appear in Phys.
openaire +3 more sources
Tight Bounds for Hypercube Minor‐Universality
Journal of Graph Theory, EarlyView.ABSTRACT A graph G $G$ is m $m$‐minor‐universal if every graph H $H$ with at most m $m$ edges and no isolated vertices is contained as a minor in G $G$. Recently, Benjamini, Kalifa and Tzalik proved that there is an absolute constant c>0 $c\gt 0$ such that the d $d$‐dimensional hypercube Qd ${Q}_{d}$ is (c⋅2d/d $c\cdot {2}^{d}/d$)‐minor‐universal ...
Emma Hogan +5 more
wiley +1 more source