Sökning: "Internal boundary layer"

Visar resultat 1 - 5 av 20 uppsatser innehållade orden Internal boundary layer.

  1. 1. Acoustic Characterization of Catalyst

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

    Författare :Surachit Dokson; [2023]
    Nyckelord :;

    Sammanfattning : The WHO has set a sound level threshold of 55 dB, beyond which noise is considered harmful to humans when exposed for an extended period of time. It is, however, estimated by the European Environmental Agency that over 110 million people in the EU are regularly exposed to levels of traffic noise above 55 dB. LÄS MER

  3. 2. Development of HVAC simulations for truck cabins using OpenFOAM

    Master-uppsats, Linköpings universitet/Mekanisk värmeteori och strömningslära

    Författare :Junaid Haider; [2023]
    Nyckelord :Computational Fluid Dynamics; OpenFOAM; Conjugate Heat Transfer; chtMultiRegionFoam;

    Sammanfattning : In regions with cold climates, a layer of ice often forms on vehicle windshields, whichobstructs the driver’s view. To address this issue, vehicles are equipped with internal defrosters. However, at Scania, the evaluation of defroster design performancecurrently relies on time-consuming and costly physical testing. LÄS MER

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

    Master-uppsats, KTH/Fysik

    Författare :Yuer Zhao; [2021]
    Nyckelord :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;

    Sammanfattning : 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). LÄS MER

  5. 4. Design- och simuleringsstudie av flödeshus och sensorkropp

    M1-uppsats, KTH/Hållbar produktionsutveckling (ML)

    Författare :Klara Larsson Sparr; Mathias Muhonen; [2020]
    Nyckelord :Flow measurement; CFD; construction; product development; fluid mechanics; simulation study; pitot tube; design; streamline shape; wing profile; cavitation; pressure measurement; CAD; solid modelling; Flödesmätning; simulering; CFD; strömningsmekanik; pitotrör; design; produktutveckling; strömlinjeform; vingprofil; kavitation; tryckmätning; CAD; solidmodellering;

    Sammanfattning : I detta arbete har ett koncept utvecklats för en flödesmätningsmetod med en intern sensorkropp samt bibehållen flödeshastighet. Denna mätmetod består av en sensorkropp i ett flödeshus där mätningen av flödet utförs med hjälp av pitotrörsberäkningar. LÄS MER

  7. 5. Boundary Layer Studies above lake Erken using Modelling and UAV

    Master-uppsats, Uppsala universitet/Luft-, vatten- och landskapslära

    Författare :Oliver Nordvall; [2020]
    Nyckelord :Internal Boundary Layer; UAV; Sea Breeze Circulation; Numerical Simulation; WRF; lake Erken; Internt gränsskikt; UAV; Sjöbris; Numerisk simulation; WRF; Erken;

    Sammanfattning : Internal boundary layers (IBLs) above lakes, created primarily by the autumn differential of land and lake surface temperatures, present a unique way of studying the lake-atmosphere coupling within the boundary layer. The small and mobile unmanned aerial vehicles (UAVs) contribute to new research areas within the boundary layer, offering high spatial resolution measurements to complement already existing observations. LÄS MER