Sökning: "Computation fluid dynamics"

Visar resultat 1 - 5 av 14 uppsatser innehållade orden Computation fluid dynamics.

  1. 1. CFD Based External Heat Transfer Coefficient Predictions on a Transonic Film-Cooled Gas Turbine Guide Vane : A Computational Fluid Dynamics Study on the Von Karman Institute LS94 Test Case

    Master-uppsats, Linköpings universitet/Mekanisk värmeteori och strömningslära

    Författare :Rosalie Johnsson; Lilian Asiegbu; [2022]
    Nyckelord :gas turbine; turbine inlet guide vane; film-cool; film cool; Computational Fluid Dynamics; CFD; heat transfer coefficient; Shear Stress Transport k-ω; SST k-ω; Scale Resolving Hybrid; SRH; turbulence modelling;

    Sammanfattning : The turbine inlet guide vanes of a gas-turbine are subjected to extreme hot gas temperatures which increases the risk of mechanical failure and overall reduces the component lifespan. Hence, it is of great interest for gas-turbine manufacturers to establish methods for accurately estimating the temperature distribution along the vane surface. LÄS MER

  3. 2. Energy-efficient Industrial processes : An investigation in the power consumption, power number, thrust force and torque requirement on a rotating bed reactor

    Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Institutionen för tillämpad fysik och elektronik

    Författare :Kasim Ali Haji; [2021]
    Nyckelord :RBR Simulation; CFD models of an RBR; Energy-efficient Industrial processes; Power number; Power consumption; RBR; rotating bed reactor; Experimental and simulation of an RBR; Empirical models of an RBR; Thrust force; Torque requirement; k-epsilon model of an RBR; SST k-omega model of an RBR.;

    Sammanfattning : Rotating bed reactors are used throughout the process industry. They are usedboth in the chemical industry and other industrial sectors, such as pharmaceuticals and the textile industry in decolorization due to by-products or contaminants.SpinChem AB manufactures rotary bed reactors (RBRs) to perform chemical reactions between liquids and solids. LÄS MER

  4. 3. Time-Resolved Adaptive Finite Element Simulations for Building Aerodynamics : A proof of concept on minimal computational resources

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Linde van Beers; [2021]
    Nyckelord :Building aerodynamics; Computational fluid dynamics; Wind engineering; FEniCS; Adaptive mesh refinement; Atmospheric boundary layer; Direct finite element simulation; Byggnadsaerodynamik; Beräkningsströmningsdynamik; Vindteknik; FEniCS; Adaptiv nätförfining; Atmosfäriskt gränsskikt; Direkt finita elementsimulering;

    Sammanfattning : The effect of building geometry on the wind environment of cities is such that it can cause problems like wind danger, discomfort and poor ventilation of airborne pollutants. Computational fluid dynamics (CFD) can play a role in assessing changes in wind environment caused by building projects before realisation at little cost. LÄS MER

  5. 4. Ray Tracing and Spectral Modelling of Excited Hydroxyl Radiation from Cryogenic Flames in Rocket Combustion Chambers

    Master-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Författare :Jaka Perovšek; [2018]
    Nyckelord :spectral modelling; excited hydroxyl radiation; OH* radiation; ray tracing; spectroscopy; rocket combustion chambers; rocket engines; hydrogen-oxygen combustion; combustion instabilities;

    Sammanfattning : A visualisation procedure was developed which predicts excited hydroxyl (OH*) radiation from the Computational Fluid Dynamics (CFD) solutions of cryogenic hydrogen-oxygen rocket flames. The model of backward ray tracing through inhomogeneous media with a continuously changing refractive index was implemented. LÄS MER

  7. 5. Study of a Body Subjected to a Vertical Drop into Water – Experiment and Simulations

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Josefin Andersson; Monika Englund; [2018]
    Nyckelord :;

    Sammanfattning : In computational fluid dynamics (CFD), the computational domain can be discretized using mesh- based methods or particle based methods. During this project; a CFD method that uses smoothed particle hydrodynamics (SPH), in which the computational domain is discretized by particles, is modelled and compared to mesh-based CFD methods, in which the domains are broken into a set of discrete volumes. LÄS MER