Sökning: "Olof Grundestam"

Hittade 2 avhandlingar innehållade orden Olof Grundestam.

  1. 1. Development and analysis of turbulence models for flows with strong curvature and rotation

    Författare :Olof Grundestam; KTH; []
    Nyckelord :Turbulence model; nonlinear modelling; streamline curvature; high-lift aerodynamics;

    Sammanfattning : An explicit algebraic Reynolds stress model (EARSM) based ona pressure strain rate model including terms tensoriallynonlinear in the mean velocity gradients is developed in orderto improve predictions for .ows with strong curvature and/orrotation. LÄS MER

  3. 2. Modelling and simulation of turbulence subject to system rotation

    Författare :Olof Grundestam; Arne Johansson; Sharath Girimaji; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Direct numerical simulations; least-squares method; turbulence model; nonlinear modelling; system rotation; streamline curvature; high-lift aerodynamics; Fluid mechanics; Strömningsmekanik;

    Sammanfattning : Simulation and modelling of turbulent flows under influence of streamline curvature and system rotation have been considered. Direct numerical simulations have been performed for fully developed rotating turbulent channel flow using a pseudo-spectral code. The rotation numbers considered are larger than unity. LÄS MER