Essays about: "FDTD method"

Showing result 6 - 10 of 14 essays containing the words FDTD method.

  1. 6. Simulating Low Frequency Reverberation in Rooms

    University essay from KTH/Marcus Wallenberg Laboratoriet MWL

    Author : Mattias Svensson; [2020]
    Keywords : Low frequencies; Room acoustics; Finite Difference Time Domain method; FDTD.; Rumsakustik; låga frekvenser; Finite Difference Time Domain metoden; FDTD.;

    Abstract : The aim of this thesis was to make a practical tool for low frequency analysis in room acoustics.The need arises from Acad’s experience that their results from simulations using raytracing software deviate in the lower frequencies when compared to field measurements inrooms. READ MORE

  3. 7. Electromagnetic Homogenization-simulations of Materials

    University essay from Uppsala universitet/Elektricitetslära

    Author : Julia Törnqvist; [2019]
    Keywords : relative permittivity; electromagnetic simulations; FDTD method; scattering parameters; transmitted electric field; reflected electric field; plane wave; wave guides; percolation;

    Abstract : This thesis aims to determine the distribution of the relative permittivity for random mixtures of material using electromagnetic simulations. The algorithm used in the simulations is the FDTD method which solves Maxwell's equations numerically in the time-domain. READ MORE

  4. 8. Black-box optimization of simulated light extraction efficiency from quantum dots in pyramidal gallium nitride structures

    University essay from Linköpings universitet/Matematiska institutionen

    Author : Karl-Johan Olofsson; [2019]
    Keywords : Black-box optimization; Radial basis functions; Gallium nitride; light extraction efficiency; FDTD; surrogate functions; semiconductors; global optimization;

    Abstract : Microsized hexagonal gallium nitride pyramids show promise as next generation Light Emitting Diodes (LEDs) due to certain quantum properties within the pyramids. One metric for evaluating the efficiency of a LED device is by studying its Light Extraction Efficiency (LEE). READ MORE

  5. 9. Multiple electromagnetic scattering by spheres using the T-matrix formulation

    University essay from Umeå universitet/Institutionen för fysik

    Author : Marina Wallin; [2015]
    Keywords : T-matrix; Multiple scattering; RCS; FDTD; Electromagnetic scattering; Mie scattering;

    Abstract : Low observable technology is used in order to prevent detection, or to delay detection. Radar cross section is an important parameter in aircraft survivability since it measures how detectable an object is with radar. To find the radar cross section Maxwell's equations are solved numerically in the time-domain using a finite difference scheme. READ MORE

  6. 10. Computational electromagnetic modeling in parallel by FDTD in 2D

    University essay from Mälardalens högskola/Akademin för innovation, design och teknik

    Author : Simon Elgland; [2015]
    Keywords : ;

    Abstract : Parallel computing is on the rise and the applications are steadily growing. This thesis will consider one such application, namely computational electromagnetic modeling (CEM). The methods that are being used as of today are usually computationally heavy which makes them time-consuming and not considered as viable options for some applications. READ MORE