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Visar resultat 1 - 5 av 14 uppsatser som matchar ovanstående sökkriterier.

  1. 1. Flame Extensions Under Ceilings

    Master-uppsats, Lunds universitet/Avdelningen för Brandteknik

    Författare :Martin Sturdy; [2023]
    Nyckelord :Flame length; curved ceiling; Technology and Engineering;

    Sammanfattning : In this Master thesis project the factors affecting flame extension under flat and curved ceilings have been investigated. An experimental campaign was carried out in Lund University’s Fire Lab using a propane gas burner and heptane pool fire in different positions and heat release rates within the setups. LÄS MER

  3. 2. Development and Analysis of a Gaseous Hydrogen-Oxygen Rotating Detonation Combustor

    Master-uppsats, KTH/Kraft- och värmeteknologi

    Författare :Birgir Steinn Hermannsson; [2022]
    Nyckelord :;

    Sammanfattning : Theory suggests that more efficient rocket propulsion can possibly be achievedby utilizing a pressure-gain detonative combustion process instead of conventional deflagration combustion. To demonstrate this, rotating detonation engines that sustain one or several detonation waves in an annular enclosure havebeen a subject of research for decades. LÄS MER

  4. 3. Mescape - A probabilistic mesoscopic model for fire evacuation in large gatherings

    Master-uppsats, Lunds universitet/Avdelningen för Brandteknik

    Författare :Lorenzo Contini; [2022]
    Nyckelord :Human behaviour; crowd evacuation; mesoscopic modelling; hydraulic model; large gatherings; fire safety; performance-based design; quantitative risk assessment; consequence analysis; uncertainty analysis; probabilistic modelling; Technology and Engineering;

    Sammanfattning : This study presents a mesoscopic model that predicts pedestrian evacuation in large gatherings with probabilistic methods. The model is based on a coarse network representation of buildings, where occupants are treated at a different scale according to their location. LÄS MER

  5. 4. A Comparison Between FDS and the Multi-Zone Fire Model Regarding Gas Temperature and Visibility in Enclosure Fires

    Kandidat-uppsats, Lunds universitet/Avdelningen för Brandteknik

    Författare :Benjamin Waldeck; [2020]
    Nyckelord :Enclosure fire; FDS; Multi-Zone Fire Model; gas temperature; Visibility; Technology and Engineering;

    Sammanfattning : When designing large buildings with complex geometry there is often a need for performance-based design and the use of computer models. CFD models like FDS that are available and validated for this purpose are typically time consuming and require large amounts of computing power. LÄS MER

  7. 5. Optronic enclosure for a Naval application.

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Felicia Nordberg; [2019]
    Nyckelord :;

    Sammanfattning : This Master thesis is a collaboration with Saab Järfälla with the purpose to find a more protective cover for the electro-optical side of their fire control director CEROS 200 version CWI. The project started with a background research to find as much information about the director as possible and examining some competitors within the area. LÄS MER