Sökning: "Scalar Transport"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden Scalar Transport.

  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. Development of a CFD model and methodology for the internal flow simulation in a hydrogen-powered UAV

    Master-uppsats, KTH/Flygdynamik

    Författare :Alessandro Porcarelli; [2021]
    Nyckelord :Fluid-dynamics; Internal Flow; Scalar Transport; UAV; Fuel Cells; OpenFOAM; Pointwise; Vätskedynamik; internt flöde; skalär transport; UAV; bränsleceller; OpenFOAM; Pointwise;

    Sammanfattning : In the context of an aviation industry whose top priority is to face the sustainability challenge, the growing civil UAV branch is not an exception. Hydrogen-powered UAVs equipped with PEM (Polymer Electrolyte Membrane) fuel cells are more and more frequently identified as the most convincing and promising technology, particularly for long-endurance mission requirements. LÄS MER

  4. 3. Pipe dreams and power struggles : a case study of political discourse and first-hand experiences of the Baltic Pipe Project in Denmark

    Master-uppsats, Lunds universitet/Kulturgeografi och ekonomisk geografi; Lunds universitet/Humanekologi

    Författare :Teresa Geertsen; [2020]
    Nyckelord :The Baltic Pipe Project; carbon lock-in; gas lock-in; fossil fuels; scalar politics; political ecology; fossil capitalism; energy politics; bridging fuels; the green transition.; Social Sciences;

    Sammanfattning : At this pivotal point in history where we must drastically cut global green house gas emissions to curb the brunt of the climate crisis, fossil fuel infrastructure expansion continues to be prioritized by industry and governing institutions. This study examines one such initiative, namely the Baltic Pipe Project, which will transport natural gas from Norway, through Denmark to Poland. LÄS MER

  5. 4. 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

  7. 5. Greenhouse gas flux at a temperate peatland : a comparison of the eddy covariance method and the flux-gradient method

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Kristofer Karlsson; [2017]
    Nyckelord :Physical Geography and Ecosystem analysis; micrometeorology; eddy covariance; flux-gradient method; methane; carbon dioxide; flux; peatland; Earth and Environmental Sciences;

    Sammanfattning : Northern peatlands have accumulated carbon for thousands of years and currently hold around one third of all soil carbon on earth. Large uncertainties are associated with predictions of how northern peatlands will react to climate change. LÄS MER