Sökning: "snow particles"

Visar resultat 1 - 5 av 27 uppsatser innehållade orden snow particles.

  1. 1. How can snow particle tracking in field experiments help to improve the friction law used in avalanche flow simulations?

    Master-uppsats, KTH/Teknisk mekanik

    Författare :Oscar Dick; [2023]
    Nyckelord :avalanche; snow particles; field experiment;

    Sammanfattning : .... LÄS MER

  3. 2. Applying spatially and temporally adaptive techniques for faster DEM-based snow simulation

    Uppsats för yrkesexamina på avancerad nivå, Blekinge Tekniska Högskola/Institutionen för datavetenskap

    Författare :Simon Andreasson; Linus Östergaard; [2023]
    Nyckelord :Real-time simulation; DEM; GPU; Games; Computer graphics; Realtidssimulering; DEM; GPU; Spel; Datorgrafik;

    Sammanfattning : Background. Physically-based snow simulation is computationally expensive and not yet applicable to real-time applications. Some of the prime factors for this cost are the complex physics, the large number of particles, and the small time step required for a high-quality and stable simulation. LÄS MER

  4. 3. Fragmentation in graupel snow collisions

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Martanda Gautam; [2022]
    Nyckelord :Ecosystem Analysis; Clouds; Snow; Graupel; SIP; Fragmentation; CKE; Rime Fraction; Earth and Environmental Sciences;

    Sammanfattning : Aircraft observations of precipitating clouds with cloud top temperatures higher than -38°C have revealed that Secondary Ice Production (SIP) is responsible for presence of majority of ice particles. One such SIP mechanism is fragmentation via collisions between ice particles. LÄS MER

  5. 4. Snow-graupel collisions in clouds: a newly derived formulation for breakup of single crystals

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Victor Craig van der Brug; [2022]
    Nyckelord :Physical Geography and Ecosystem Analysis; Secondary Ice Production; Ice Cloud Number Concentration; Cloud Ice; Ice-Ice Collisions; Snow Crystal; Atmospheric Science Biogeochemical Cycles; Earth and Environmental Sciences;

    Sammanfattning : The observed and well-known discrepancy between concentrations of ice nucleating particles in the environment and the concentrations of ice particles in clouds show that there are additional ‘secondary’ processes enhancing the concentrations of ice particles. In present-day modelling of weather and climate, such processes are mostly overlooked and thus a cause for uncertainty. LÄS MER

  7. 5. Slab and Powder-Snow avalanche animation on the GPU

    Uppsats för yrkesexamina på avancerad nivå, Blekinge Tekniska Högskola/Fakulteten för datavetenskaper

    Författare :Åleskog Jonthan; Cheh Daniel; [2021]
    Nyckelord :Avalanche; GPU; DEM; Real-time; Games; Lavin; GPU; DEM; Realtid; Spel;

    Sammanfattning : Background: The video game industry has yet to achieve a physically-based real-time avalanche simulation because of the sheer complexity of modeling the behavior of snow avalanches. An avalanche is made out of snow, meaning it would require a snow simulation which itself already shows to be complex. LÄS MER