Essays about: "Numerical solutions"

Showing result 1 - 5 of 125 essays containing the words Numerical solutions.

  1. 1. eulerr: Area-Proportional Euler Diagrams with Ellipses

    University essay from Lunds universitet/Statistiska institutionen

    Author : Johan Larsson; [2018]
    Keywords : Euler diagrams; Venn diagrams; ellipses; R; computer graphics; area-proportional; software; Mathematics and Statistics;

    Abstract : Euler diagrams are common and intuitive visualizations for data involving sets and relationships thereof. Compared to Venn diagrams, Euler diagrams do not require all set relationships to be present and may therefore be area-proportional also with subset or disjoint relationships in the input. READ MORE

  2. 2. Railway bridges with floating slab track systems : Numerical modelling of rail stresses - Dependence on properties of floating slab mats

    University essay from Luleå tekniska universitet/Byggkonstruktion och -produktion

    Author : Daniel Kostet; [2018]
    Keywords : ballasted track; bridge; elastic mat; expansion; finite element method FEM ; finite element analysis FEA ; floating slab mat; interaction; International union of railways UIC ; non-ballasted track; SOFiSTiK; ballasterat spår; ballastfritt spår; bro; dilatationsfogar; finita elementmetoden FEM ; finit elementanalys FEA ; fixerat spår; interaktion; Internationella järnvägsunionen UIC ; SOFiSTiK; vibrationer; vibrationsdämpande matta;

    Abstract : The increased use of continuously welded rails in the railway systems makes it necessary to increase the control of the rail stresses to avoid instability and damages of the rails. Large stresses are especially prone to appear at discontinuities in the railway systems, such as bridges, due to the interaction between the track and the bridge. READ MORE

  3. 3. Tip vortex cavitation and diffused vorticity of propeller profiles: a modelling approach : Investigation of an implemented TVI model, and  implementation and investigation of a DVH model

    University essay from Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik

    Author : Lukas Lundin; [2017]
    Keywords : Vortex dynamics; Cavitation; TVI; DVH; Von Kármán Vortex Street; Virveldynamik; Cavitering; TVI; DVH; Von Kármán virvelgata;

    Abstract : To predict fluid properties and interactions is an important task for the industry. It is plagued, however, by being close to impossible to predict analytically. Hence, it is customary to turn to numerical solutions. This in itself comes with many different methods and approaches suitable for different needs. READ MORE

  4. 4. Silicon solar cells: basics of simulation and modelling : Using the mathematical program Maple to simulate and model a silicon solar cell

    University essay from Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Author : Sebastian Ekhagen; [2017]
    Keywords : solar cell; semiconductor; physics; condensed matter physics; solid state physics; applied physics; solcell; halvledare; fysik; material fysik; applicerad fysik; fasta tillståndets fysik.;

    Abstract : The main goal of this thesis was to simulate a solar cell with the symbolic manipulation tool Maple and discuss the strength and weaknesses of using Maple instead of the already known simulation program PC1D. This was done mainly by solving the three essential differential equations governing the current density and excess electron and hole densities in the solar cell. READ MORE

  5. 5. Multi-physical Simulations of High Voltage Circuit Breakers

    University essay from KTH/Energiteknik

    Author : Julien POUILLY; [2017]
    Keywords : ;

    Abstract : This report is the outcome of a 6-month Master’s Thesis carried out at General Electric Grid Solutions in Villeurbanne within the LTDT team in the Circuit Breaker and Bay Development (CB2D) department of the Apparatus Research Center (ARC). It presents both the innovative methodology adopted and the results obtained along the project. READ MORE