Sökning: "inner radius"

Visar resultat 1 - 5 av 19 uppsatser innehållade orden inner radius.

  1. 1. Finite-Element Analysis of Cryogenic Pressure Vessels Under Blast Loading

    Master-uppsats, Luleå tekniska universitet/Rymdteknik

    Författare :Casper Liavåg; [2023]
    Nyckelord :Cryogenic Pressure Vessel; Blast; Blast Loading; Pressure Vessel; Launch Infrastructure;

    Sammanfattning : The behavior of cryogenic double-walled pressure vessels, such as thoseused in space launch vehicle infrastructure, under blast loading is a somewhatunderstudied topic. This is of interest due its implications on, among otherthings, launch site design and safety in the event of a launch vehicle failure. LÄS MER

  3. 2. Kupolhuset : Laster och lasteffekter för en liten limträkupol

    Kandidat-uppsats, Umeå universitet/Institutionen för tillämpad fysik och elektronik

    Författare :Erik Andersson; [2022]
    Nyckelord :limträ; kupol; kupolhus; limträbågar; stomme; stomverifiering;

    Sammanfattning : Detta arbete handlar om stomverifiering och materialeffektivisering av ett kupolhus med en stomme bestående av radiellt uppställda limträbågar. Analysen utgår från ett befintligt hus i form av en sfärisk kupol med en radie på drygt 6 meter och en höjd på omkring 7,5 meter. LÄS MER

  4. 3. Measuring the [C II]-to-H I connection in high-redshift absorption-selected galaxies

    Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

    Författare :Gaurav Senthil Kumar; [2022]
    Nyckelord :QSO; Quasar; Black Hole; AGN; Active Galactic Nuclei; DLA; Damped Lyman Alpha; C II; [C II]; H I; Sightline; HST; X-shooter; Spectroscopy; Echelle Spectroscope; Hyperfine transition; Hyperfine; Physics and Astronomy;

    Sammanfattning : HI neutral gas is the basic building block of galaxies. It dictates the star formation rate and hence the metal enrichment rates within high redshift galaxies. HI neutral gas cannot be directly observed beyond z ≈ 0. LÄS MER

  5. 4. Cooling simulation of a BEV electrical machine rotor

    Master-uppsats, KTH/Fordonsdynamik

    Författare :Lisa Sparv; [2021]
    Nyckelord :Electrical machine; Rotor cooling; Permanent magnet; Simulation; STAR-CCM ; Elmaskin; Rotorkylning; Permanentmagnet; Simulering; STAR-CCM ;

    Sammanfattning : The thesis work described in this report is about simulation of the cooling of an electrical machine rotor. Limitations and simplifications were made on the CAD model of the rotor with the purpose of reducing the simulation time, for it to then be used for CFD-simulations using STAR-CCM+. LÄS MER

  7. 5. Stars Eating Planets

    Master-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

    Författare :John Wimarsson; [2020]
    Nyckelord :Earth and planetary astrophysics; planetary dynamics; planet-planet scattering; planet consumption; Physics and Astronomy;

    Sammanfattning : In a phase of instability during the dynamical evolution of some multiple exoplanetary systems, exchange of angular momentum and/or energy through gravitational interactions between planets will lead to alterations of their orbital properties. In some cases, planetary orbits end up crossing, which leads to close encounters between two planets. LÄS MER