Sökning: "Stokes equations"

Visar resultat 1 - 5 av 65 uppsatser innehållade orden Stokes equations.

  1. 1. A study on Friction Boundary Conditions with Unicorn/FEniCS-HPC

    Master-uppsats, KTH/Numerisk analys, NA

    Författare :Irene Natale; [2019]
    Nyckelord :;

    Sammanfattning : The aim of this thesis is to present and validate a boundary condition formulation for CFD problems that includes a friction parameter. In the first part of the thesis the incompressible Navier-Stokes system of equations and the friction boundary conditions are presented. LÄS MER

  2. 2. Ice Sheet Modeling: Accuracy of First-Order Stokes Model with Basal Sliding

    Magister-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Eskil Jonsson; [2018]
    Nyckelord :Ice sheet modelling; First-Order Stokes model; basal sliding; Stokes equations;

    Sammanfattning : Some climate models are still lacking features such as dynamical modelling of ice sheets due to their computational cost which results in poor accuracy and estimates of e.g. sea level rise. LÄS MER

  3. 3. Cut finite element methods for incompressibleflows with unfitted interfaces

    Master-uppsats, Umeå universitet/Institutionen för fysik

    Författare :Carl Holmberg; [2018]
    Nyckelord :Finite element method;

    Sammanfattning : Problems with time-evolving domains are frequently occurring in computationalfluid dynamics and many other fields of science and engineering.Unfitted methods, where the computational mesh does not conform to thegeometry, are of great interest for handling such problems, since they removethe burden of mesh generation. LÄS MER

  4. 4. Partially Parabolic Wind Turbine Flow Modelling

    Master-uppsats, KTH/Mekanik

    Författare :Sebastian Haglund El Gaidi; [2018]
    Nyckelord :Wind turbine flow; Single wind turbine; Computational fluid dynamics; Partially parabolic Navier-Stokes equations; Finite difference method.;

    Sammanfattning : Climate change is an evermore urging existential treat to the human enterprise. Mean temperature and greenhouse gas emissions have in-creased exponentially since the industrial revolution. But solutions are also mushrooming with exponential pace. LÄS MER

  5. 5. Finite Element Approximations of 2D Incompressible Navier-Stokes Equations Using Residual Viscosity

    Kandidat-uppsats, Uppsala universitet/Institutionen för teknikvetenskaper; Uppsala universitet/Institutionen för teknikvetenskaper

    Författare :William Sjösten; Victor Vadling; [2018]
    Nyckelord :Finite element method; incompressible Navier-Stokes equations; residual based artificial viscosity; stabilization; adaptive method; Chorin s method; IPCS; Crank-Nicholson s method; benchmark problems; CPU-time; accuracy;

    Sammanfattning : Chorin’s method, Incremental Pressure Correction Scheme (IPCS) and Crank-Nicolson’s method (CN) are three numerical methods that were investigated in this study. These methods were here used for solving the incompressible Navier-Stokes equations, which describe the motion of an incompressible fluid, in three different benchmark problems. LÄS MER