Sökning: "moving boundary"

Visar resultat 11 - 15 av 46 uppsatser innehållade orden moving boundary.

  1. 11. Topology optimization with optimal spatially varying length scale

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Innovation

    Författare :Stefan Lopar; [2020]
    Nyckelord :Topology optimization; Varying length scale; Technology and Engineering;

    Sammanfattning : Density based topology optimization has become an efficient way to design optimal complex structures with different goals, constraints and boundary conditions. To regularize the solution, density filters are utilized and is controlled by the length scale. LÄS MER

  3. 12. Vibrational prediction of a waste water pump

    Master-uppsats, KTH/Hållfasthetslära

    Författare :Daniel Sundström; [2020]
    Nyckelord :;

    Sammanfattning : An off-market waste water pump is suspected to have high vibrational velocity levels. These vibrations are sought after at the outer surface located at the upper bearing position of the pump. It has then become of interest for trying to predict these vibrations by using the commercial FEA software COMSOL. LÄS MER

  4. 13. Conceptual development of brake friction estimation strategies

    Master-uppsats, KTH/Fordonsdynamik

    Författare :Kamesh Thiyagarajan; [2020]
    Nyckelord :Brake friction estimation; Brake friction coefficient; State Estimation; Unscented Kalman Filter; UKF; Moving Horizon Estimation; MHE; Skattning av bromsfriktion; bromsfrikltionskoefficient; skattning; Uncented Kalman Filter; UKF; Moving Horizon Estimation; MHE;

    Sammanfattning : The thesis work investigates brake friction estimation strategies. The friction between the brake disc and brake pads is not constant during the braking application and contributes to the amount of brake torque achieved at the wheels. LÄS MER

  5. 14. Finite Element Approximation of a Moving Boundary Problem Arising in the Modeling of the Spin Coating Process for Thin Films

    Kandidat-uppsats, Karlstads universitet/Institutionen för matematik och datavetenskap (from 2013)

    Författare :Kristos Qiqi; [2020]
    Nyckelord :Moving boundary; FEM approximation; Navier-Stokes equations; Spin coating;

    Sammanfattning : Using the Navier-Stokes equations along with a continuity equation, a one-dimensional model is developed to describe the spin coating process of thin polymeric films. The resulting model is a system of a parabolic partial differential equation coupled with an integral equation as well as with an ordinary differential equation describing the motion of a moving boundary. LÄS MER

  7. 15. Morphology formation via a ternary Cahn-Hilliard system during one species evaporation as a moving boundary problem - Finite Element approximation and implementation in FEniCS

    Master-uppsats, Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik (from 2013)

    Författare :Nicklas Jävergård; [2020]
    Nyckelord :Morphology Formation; Evaporation; Cahn Hilliard Equations; Finite Element Method; Morforlogiformation; avdunstning; Cahn-Hilliards ekvation; Finita element metoden;

    Sammanfattning : In this thesis we derive a coupled system of Cahn-Hilliard equations posed in a domain with moving boundary using arguments from thermodynamics. The physical setting we have in mind is a ternary solution observed during one species evaporation as a moving boundary problem. LÄS MER