Essays about: "Turbine"

Showing result 1 - 5 of 670 essays containing the word Turbine.

  1. 1. Subgrid finite volume preconditioner for Discontinuous Galerkin implemented in the DUNE framework

    University essay from Lunds universitet/Matematik LTH

    Author : Johannes Kasimir; [2021]
    Keywords : discontinuous galerkin spectral element method; dune; high performance computing; numerical analysis; numerical methods; fluid dynamics; simulation; multigrid; iterative methods; Technology and Engineering;

    Abstract : A Jacobian free multigrid preconditioner for linear problems arising from Implicit Discontinuous Galerkin (DG) discretizations is implemented. The preconditioner is based on a multigrid method for a low order Finite volume (FV) discretization on a subcellgrid. L2-projections are introduced as a strategy to translate between the discretizations. READ MORE

  2. 2. Towards sustainable shipping: Recommendations for the telescopic mast design of a sailing cargo vessel

    University essay from KTH/Lättkonstruktioner

    Author : Lukas Blau; [2021]
    Keywords : Oceanbird; telescopic mast; conceptual design; sailing cargo vessel;

    Abstract : A comparative study is carried out to investigate the most promising route towardsthe lightweight construction of a retractable mast for a sailing cargo vessel.Four design families are developed and compared. The primary criteria forjudgment are the structural mass, strength, and stiffness in relation to a providedbenchmark design. READ MORE

  3. 3. LES modelling of spray combustion

    University essay from Lunds universitet/Institutionen för energivetenskaper

    Author : Arvid Åkerblom; [2021]
    Keywords : Gas Turbine; CFD; Large Eddy Simulation; Lagrangian Particle Tracking; Chemical Kinetics; Reaction Mechanism; Combustion; OpenFOAM; CHEMKIN; Technology and Engineering;

    Abstract : Computational fluid dynamics is a powerful method for understanding the flow and combustion that occurs inside aircraft engines and will be a key tool in the transition from conventional fossil-based fuel to sustainable alternatives. Because conventional fuels have been more widely researched, an attempt at simulating the combustion of alternative fuels should be preceded by the development of a method that is capable of accurately simulating the combustion of a conventional fuel. READ MORE

  4. 4. Inclusion of Wind Turbines into Frequency Support Services : Exploring frequency stability issues and comparing regulation power market products

    University essay from Uppsala universitet/Institutionen för elektroteknik

    Author : Oskar Andersson; [2021]
    Keywords : Frequency Containment Reserve; Frequency Restoration Reserve; Fast Frequency Restoration; Synthetic Inertia; Variable Speed Wind Turbine;

    Abstract : There is a trend in Sweden towards increasing the electricity production from renewable energy sources in the electric grid. The increased share of renewables could be seen as essential for Sweden to be able to meet the obligated climate goals. READ MORE

  5. 5. Harmonic Emissions in Microgrids

    University essay from Lunds universitet/Industriell elektroteknik och automation

    Author : Lejla Alibegovic; Emelie Freiland Paulsson; [2021]
    Keywords : Harmonics; microgrid; local energy system; NEPLAN; Technology and Engineering;

    Abstract : “Affordable and clean energy” is EUs 7th Sustainable Development Goal and includes an increase of renewable energy generation in the global energy mix. A lot of the responsibility falls on the energy sector to transform and obtain solutions for a more sustainable future. READ MORE