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Visar resultat 1 - 5 av 12 uppsatser som matchar ovanstående sökkriterier.

  1. 1. Adjoint-based Formulation for Shape Optimization Problems in Computational Fluid Dynamics

    Master-uppsats, KTH/Matematik (Avd.)

    Författare :Anton Scotte; [2023]
    Nyckelord :;

    Sammanfattning : A continuous adjoint formulation for exterior optimization of Dirichlet data on the boundary for potential flow applications has been developed in this thesis. This has been performed by utilizing boundary integral methods for both the primal problem (Laplace’s equation) and for the corresponding adjoint equation (Poisson’s equation) on the unit disc. LÄS MER

  3. 2. Development and validation of an improved wall-function boundary condition for computational aerodynamics

    Master-uppsats, KTH/Strömningsmekanik och Teknisk Akustik

    Författare :Carlo Loris Palombo; [2021]
    Nyckelord :Wall Functions; Wall Treatment; M-Edge; Computational Fluid Dynamics; Turbulent Boundary Layer; Turbulence Models; Väggfunktionsranvillkor; M-Edge; Strömningsmekaniska beräkningar; Turbulent Gränsskikt; Turbulensmodeller;

    Sammanfattning : Computational Fluid Dynamics is a powerful and widely used tool for developing projectsthat concern flow motion, in very different fields. Industrial CFD solvers are continuouslydeveloped with the aim of improving accuracy and reducing the computational cost of thesimulations. LÄS MER

  4. 3. Cooling Fan Optimization for Heavy Electrified Vehicles : A study on performance and noise

    Master-uppsats, KTH/Flygdynamik

    Författare :Amir Khiabani; Daniel Acebo Alanis; [2020]
    Nyckelord :Electric axial fans; Fan design; Blade design; Battery Electric Vehicle; Fan noise; Fan performance.;

    Sammanfattning : Vehicle electrification plays a significant role in the effort to reduce the environmental impact of the automotive industry. Scania is one of the leading manufacturers ofheavy vehicles which is currently moving towards a sustainable transport system by manufacturing a new generation of heavy vehicles powered by batteries. LÄS MER

  5. 4. Simulating flow-noise for after-treatment systems

    Master-uppsats, KTH/Teknisk mekanik

    Författare :Adam Sandström; [2020]
    Nyckelord :Flow-noise; CAA; DES; non-refelctive boundary conditions; stretched grid; Menter SST;

    Sammanfattning : Modern silencers for heavy vehicle applications are designed to cancel out the sound generated by the effects of combustion and propagation of exhaust gases through the engine after-treatment system. The complex geometry within the compact silencer give rise to self generated (or flow-) noise that contribute to the total sound power radiated at the exhaust outlet. LÄS MER

  7. 5. Laboratory exercise - Compressible flow, oblique shock waves

    Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)

    Författare :Matheus Svedholm; Josefine Gessl; [2020]
    Nyckelord :;

    Sammanfattning : When studying to become an engineer the education is mainly theoretical and to confirm the theory laboratory exercises are incorporated in the curriculum. Being able to visualize the phenomenons studied helps in giving the students a deeper understanding. LÄS MER