Essays about: "Turbulensmodeller"

Showing result 1 - 5 of 9 essays containing the word Turbulensmodeller.

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

    University essay from KTH/Strömningsmekanik och Teknisk Akustik

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

    Abstract : 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. READ MORE

  3. 2. A Numerical Study of Melt Pool Heat Transfer in the IVR of a PWR

    University essay from KTH/Fysik

    Author : Yuer Zhao; [2021]
    Keywords : In-vessel melt retention; corium pool; Zr oxidation ratio; melt pool convection; CFD; SST k-ω turbulence model; Smältretention i kärlet; koriumpöl; Zr-oxidationsförhållande; konvektion i en smältpöl; CFD; SST k-ω turbulensmodell;

    Abstract : This thesis aims to provide the thermal condition of melt pool convection by CFD simulation, which is important to the assessment of the invessel melt retention (IVR) strategy widely adopted in Generation III pressurized water reactors (PWRs). As a severe accident mitigation measure, the IVR strategy is realized through external cooling of the lower head of a reactor pressure vessel (RPV). READ MORE

  4. 3. Implementation, Validation, and Evaluation of 1D-3D CFD Co-simulation for Cooling System of Internal Combustion Engine

    University essay from KTH/Fordonsdynamik

    Author : Amirali Kerachian; [2020]
    Keywords : CFD; 1D-3D Co-simulation; Cooling Systems; Turbulence Modeling; CFD; 1D-3D Co-simulering; kylsystem; turbulensmodellering;

    Abstract : Internal combustion engines, electric motors and batteries generate a significant amount of heat during operation that needs to be extracted by cooling systems. A cooling system is designed and installed to extract the generated heat and maintain the system temperature in an optimal range. READ MORE

  5. 4. CFD study and method development for air intake systems using OpenFOAM

    University essay from KTH/Teknisk mekanik

    Author : Giovanni Calzolari; [2020]
    Keywords : ;

    Abstract : This report is the result of a joint collaboration between the two Swedish companies AFRY and Scania AB. The need of CFD analyses for internal flow purposes are continuously increasing in companies like Scania. However the use of CFD software is limited to license costs. READ MORE

  6. 5. Turbulence Modeling in Urban Air Mobility Applications : Modellering av en avstämbar laser med smal linjebredd

    University essay from KTH/Skolan för teknikvetenskap (SCI)

    Author : Tove Ågren; [2020]
    Keywords : ;

    Abstract : A proof-of-concept turbulence modeling approach for rotorcraft in low-altitude, low-speed conditions based on parametric Control Equivalent Turbulence Input (CETI) models was developed. In its original form, CETI-model outputs are disturbance control inputs to replicate the vehicle motion response as if it was operating in turbulent conditions. READ MORE