Sökning: "evacuation experiments"

Visar resultat 1 - 5 av 55 uppsatser innehållade orden evacuation experiments.

  1. 1. Visibility in Smoke With Different Extinction Coefficients

    Master-uppsats, Lunds universitet/Avdelningen för Brandteknik

    Författare :Lea Elhokayem; [2022]
    Nyckelord :Visibility; smoke; exit sign; extinction coefficient; visibility constant; evacuation; Technology and Engineering;

    Sammanfattning : Visibility in smoke has since the 1970s gained some attention, mostly after Tadahisa Jin ran the experiments which helped him develop todays widely used visibility equation. By showing that visibility can be assumed to be inversely proportional to the extinction coefficient by a visibility constant (equal to 8 for light emitting sign and 3 for light reflecting), Jin opened up new doors for researchers who were testing out his theory by going around experimenting in different ways and also by showing that there is way for more research to be done. LÄS MER

  3. 2. Simulating Effects of Agent Velocity Changes on Crowd Behavior During Fire Emergency Evacuations

    Kandidat-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Charlie Mårtensson; Jacob Brännström; [2021]
    Nyckelord :;

    Sammanfattning : Fire emergencies are both deadly and difficult to accurately model in real life. Computer-simulated crowds provide a way to observe the possible outcome of a fire emergency evacuation without endangering real human subjects. LÄS MER

  4. 3. A COMPARATIVE STUDY OF TRAVELLING FIRE IN LARGE SPACES WITH MULTI-ZONE FIRE MODEL AND FDS

    Master-uppsats, Lunds universitet/Avdelningen för Brandteknik

    Författare :Paolo Bertoli; [2021]
    Nyckelord :Multi-Zone fire model; FDS; Large enclosures; Travelling fire.; Technology and Engineering;

    Sammanfattning : A knowledge of far field temperatures is valuable for Performance Based Design structural analysis and life safety analysis, where a parametric study is needed. A fire model using multiple zones called a multi zone (MZ) fire model has in previous studies shown good potential as an analytical tool for predicting far field temperatures in large compartments. LÄS MER

  5. 4. The Investigation and Modeling of the interaction between Paperboard Clippings in a Pipe Flow

    Master-uppsats, Lunds universitet/Institutionen för energivetenskaper

    Författare :Lea Christierson; [2021]
    Nyckelord :Fluid-structure interaction; paperboard material modeling; transient pipe flow; overset mesh; image analysis; Technology and Engineering;

    Sammanfattning : In the manufacturing process of Tetra Pak packages, holes are cut out of the paperboard for straws and caps. The left-over paperboard clippings, called confetti, need to be evacu- ated from the machine. However, this evacuation process has proven to cause problems due to jams arising as the confetti get stuck in joints and along the pipe walls. LÄS MER

  7. 5. The Impact of Social Distancing on Evacuations using Crowd Simulations

    Kandidat-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Emrik Hydén; [2021]
    Nyckelord :Crowd; evacuation; simulation; social distance; COVID19; Folkmassa; evakuering; simulering; social distansering; COVID19;

    Sammanfattning : During pandemics such as the Coronavirus Disease 2019 (COVID19), some government agencies might recommend that citizens keep distance to other people when moving in public environments; this distance is often referred to as social distancing. Since social distancing limits how people are allowed to move in an environment, it could prove to become an obstacle during situations such as evacuations. LÄS MER