Essays about: "Turbulence modelling"

Showing result 21 - 25 of 39 essays containing the words Turbulence modelling.

  1. 21. LES Modelling of Turbulent Flow Through an Array of Cylinders Using OpenFOAM

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Hanna Isaksson; [2019]
    Keywords : Porous media; OpenFOAM; premeability; LES; packed cylinders; turbulence;

    Abstract : The objective for this master thesis project was to perform simulations for high and low Reynolds number for a porousmedia modelled as quadratic packed cylinders. The simulations were to be performed by using the open source codeOpenFOAM and the turbulence should be modelled by the LES turbulence model in order to resolve details about theturbulence. READ MORE

  3. 22. The impact of turbulence on supernovae shockwaves

    University essay from Lunds universitet/Astronomi - Genomgår omorganisation

    Author : Loke Lönnblad Ohlin; [2018]
    Keywords : astrophysics; astronomy; supernovae; shockwaves; interstellar medium; massive stars; turbulence; molecular clouds; Physics and Astronomy;

    Abstract : The momentum and energy injection from supernovae is one of the main feedback modes, and is therefore key to the understanding of galaxy evolution and star formation. However, due to low resolution, large scale galaxy simulations often have issues with accurately modelling supernovae, and therefore rely on sub-grid models. READ MORE

  4. 23. Partially Parabolic Wind Turbine Flow Modelling

    University essay from KTH/Mekanik

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

    Abstract : 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. READ MORE

  5. 24. Modelling coaxial jets relevat to turbofan jet engines

    University essay from KTH/Mekanik

    Author : Asuka Gabrielle Pietroniro; [2016]
    Keywords : ;

    Abstract : Simulations of subsonic turbulent coaxial hot jets were conducted on two types ofunstructured grids within the framework of STAR-CCM+. The study case is based on atypical airliner turbofan engine model with a core nozzle and a fan nozzle, having a bypassratio of five. READ MORE

  6. 25. Piston bowl combustion simulation - From fuel spray calibration to emissions minimization

    University essay from KTH/Mekanik

    Author : Diego Garcia Pardo; [2016]
    Keywords : ;

    Abstract : The current pollution policies in all European and American countries are forcing the industry to movetowards a more efficient and environmentally friendly engines. On the other hand, customers requiremaintaining the power and fuel consumption. READ MORE