Essays about: "numeriska beräkningar"

Showing result 6 - 10 of 42 essays containing the words numeriska beräkningar.

  1. 6. Thawing, Scaling and Tracking QUintessence in a Phase Space Perspective : and comparisons to the ΛCDM model

    University essay from Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik (from 2013)

    Author : Arvid Ryberg; [2022]
    Keywords : Quintessence; Cosmology; Dark Energy; Astro physics;

    Abstract : This thesis aims to give an introduction to quintessence models as well ascomparing those models with the currently accepted ΛCDM model. We willconsider quintessence in a spatially flat and isotropic Universe and useregular dynamical systems on a bounded three dimensional phase spacewhere we perform numerical calculations. READ MORE

  3. 7. Computation of Effective Local Diffusion Tensor

    University essay from KTH/Fysik

    Author : Viktor Pontéus; [2022]
    Keywords : Diffusion; Diffusion Tensor; Fokker-Planck; Coarse-graining; Extended Ensembles; Diffusion; Diffusionstensor; Fokker-Planck; Coarse-graining; Utvidgad ensemble;

    Abstract : Numerical simulations of large complex systems such as biomolecules often suffer from the full description of the system having too many dimensions for direct numerical calculations and Monte Carlo methods having trouble overcoming energy barriers. It is therefore desirable to formulate a description in lower dimension which captures the system’s macroscopic behaviour. READ MORE

  4. 8. Air Cooling of Lithium Polymer Batteries : Experiments and Calculations on the KTH Formula Student 2022 Race Car Accumulator

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : William Olsson; Linus Grinde; [2022]
    Keywords : ;

    Abstract : Lithium batteries work optimally at a temperature of around 15 to 35 °C, with a maximum temperature of around 60 °C. To get the most performance out of a formula student car the cooling needs to keep the battery cells within these temperatures during the competition. READ MORE

  5. 9. Estimation of Blocked Forces in an Assembly with Rear Drive Unit as a Source

    University essay from KTH/Maskinkonstruktion (Inst.)

    Author : Srujeeth Khanna Bala; [2021]
    Keywords : Component based TPA; source characterized forces; FEM; Contact forces; ISO20270:2019; Blocked forces; Automotive; NVH; sound and vibration; komponentbaserad TPA; karaktärisering av bullerkällor; FEM; kontaktkrafter; blockerade krafter; bilindustri; ljud och vibrationer; ISO20270:2019;

    Abstract : Experimental validations are widely used for studying dynamic structural behaviors and these studies involve defining the structures completely as being used in real time. While in numerical simulations such detailed features are not specified to ease the computation, thereby deviating from accurate results. READ MORE

  6. 10. Design of a Level Sensing System for the Propellant Tank of a Microlauncher

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Robin Scholtes; [2021]
    Keywords : Level Sensing; Cryogenic; Microlauncher; Liquid Oxygen; Nivåavkänning; Kryogen; Mikrobärraket; Flytande Syre;

    Abstract : The present report aims to show the development process of a liquid level sensing system for the use within the propellant tanks of a launch vehicle. Whereas many recent launchers use discrete level sensing systems to indicate the amount of fuel on defined spots like fill-stop and engine cut-off, in this report a continuous capacitance based sensor probe is described. READ MORE