Sökning: "Stokes equations"

Visar resultat 1 - 5 av 94 uppsatser innehållade orden Stokes equations.

  1. 1. Solving the incompressible Navier-Stokes equations in 3-D to model gas flow in a room

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Avdelningen för beräkningsvetenskap

    Författare :Fredrik Malmström; [2024]
    Nyckelord :;

    Sammanfattning : The thesis proposes to model the flow of gases in a room by solving the incompressible Navier-Stokes equations in three dimensions. The transportationof scalars such as temperature and concentration of CO2 is modeled by solving the advection-diffusion equation, and the effects of temperature on thevelocity is accounted for by employing the Boussinesq approximation. LÄS MER

  3. 2. Do viscous flows slip?

    Master-uppsats, Göteborgs universitet/Institutionen för matematiska vetenskaper

    Författare :Björn Sjösvärd; [2023-12-21]
    Nyckelord :Mathematics; partial differential equations; multivectors; Hodge de-compositions; the Stokes equation; Hodge boun;

    Sammanfattning : In this thesis, the Stokes equation is discussed and solved under different boundary conditions. The Stokes equation governs the flow of viscous liquids, for example honey or syrup. The first chapters in the thesis provides an introduction to multivector algebra and analysis, with the aim of presenting the concept of Hodge decompositions. LÄS MER

  4. 3. Boundary conditions in left ventricle for simulating mitral valve regurgitation

    Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)

    Författare :Théo Cyril Arvid Monpouet Ekeram; Ellen Mattsson; [2023]
    Nyckelord :;

    Sammanfattning : Since various kinds of cardiovascular diseases are the leading cause of death today, it is of great importance to further our understanding of not only the diseases themselves, but also different treatments. One of the emerging tools is computational fluid dynamics. LÄS MER

  5. 4. Spänning- och flödessimulering av en högtrycksångventil

    Master-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Författare :Joakim Nörve; [2023]
    Nyckelord :CFD; COMSOL; structural mechanics; heat transfer; CFD; COMSOL; strukturmekanik; värmetransport;

    Sammanfattning : Ventiler utgör en avgörande roll i det industriella samhället och används flitigt inom områden som säkerhet, filtrering och reglering av flöden. Säkerställandet av hållbarhet och drift av ventilen är därför ytters viktigt. Ventilen som undersöks har fyra packningsringar gjord av grafit. LÄS MER

  7. 5. CFD Analysis of the Flow Around a Paraglider Wing

    Master-uppsats, KTH/Teknisk mekanik

    Författare :Caterina Gennari; [2023]
    Nyckelord :Paraglider Wing; CFD; RANS; DES; Aerodynamics; Aerodynamic Hysteresis; FSI; Deformable Structure; Membrane; Shell Elements;

    Sammanfattning : In this study, the characteristics of the flow around a paraglider wing were investigated through the use of Computational Fluid Dynamics (CFD) simulations by solving both Reynolds Averaged Navier-Stokes equations and Delayed Detached Eddy Simulations were employed. This allowed the observation of how the unique shape of the canopy of a paraglider can influence the behaviour of the flow and how aerodynamic hysteresis can manifest on this sort of wing. LÄS MER