Sökning: "passive scalar"

Hittade 4 uppsatser innehållade orden passive scalar.

  1. 1. CFD Analysis of Water Replenishment Holes in an Offshore Wind Turbine Foundation

    Master-uppsats, Linköpings universitet/Mekanisk värmeteori och strömningslära

    Författare :Shubham Arvind Tupkar; Swetha Sappe Narasimhamurthy; [2022]
    Nyckelord :CFD; Wave Dynamics; Implicit LES; GABC; OpenFOAM; Stokes V; Monopile Foundation; Replenishment Holes;

    Sammanfattning : The study presented in this thesis investigates the passive exchange of enclosed water with seawater in an offshore wind turbine foundation. This thesis was undertaken in collaboration with Vattenfall R&D, Älvkarleby, Sweden. The water exchange is studied by utilizing Computational Fluid Dynamics (CFD) simulations. LÄS MER

  3. 2. Deep learning for non-intrusive sensing in turbulence with passive scalars

    Master-uppsats, KTH/Strömningsmekanik och Teknisk Akustik

    Författare :Arivazhagan Geetha Balasubramanian; [2021]
    Nyckelord :Turbulent boundary layer; passive scalar; direct numerical simulation; Prandtl number; Machine learning; convolutional neural network; Turbulent gränsskikt; passiv skalär; direkt numerisk simulering; Prandtl-nummer; maskininlärning; faltningsneurala nätverk;

    Sammanfattning : The near-wall modelling of turbulent flows has been an active field of research due to the computational cost associated with the direct numerical simulations of such flow, which are characterized by a wide range of length and time scales. With the recent advancements in technological capabilities, the availability of high-fidelity data has enabled the construction of data-driven approaches to model turbulence. LÄS MER

  4. 3. Numerical simulations of mixing for gas exhaust treatment

    Master-uppsats, KTH/Strömningsmekanik och Teknisk Akustik

    Författare :Viktor Lahti; [2019]
    Nyckelord :;

    Sammanfattning : According to the World Health Organisation, nine out of ten people live in places with sub par air quality. Therefore, the study of the treatment of polluted air is from a global point of view of great importance, and a matter of life quality for both humans and as well as animals. LÄS MER

  5. 4. Experimental study on turbulent pipe flow

    Master-uppsats, KTH/Mekanik

    Författare :Marco Ferro; [2012]
    Nyckelord :;

    Sammanfattning : Fully developed turbulent pipe ows have been studied experimentally for more than a century and for more than two decades by means of Direct Numerical Simulations, nonetheless there are still unresolved and of fundamental nature issues. Among those are the scaling of the mean velocity pro le or the question whether the near-wall peak in the variance pro le is Reynolds number invariant. LÄS MER