Sökning: "Transient heat flow"

Visar resultat 21 - 25 av 40 uppsatser innehållade orden Transient heat flow.

  1. 21. Software Benchmark and Material Selection in an Exhaust Manifold : Thermo-mechanical fatigue simulation of an exhaust manifold in AVL Fire M

    Master-uppsats, Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik (from 2013)

    Författare :Oskar Rombo; [2018]
    Nyckelord :thermomechanical fatigue; TMF; simulation; viscoplastic;

    Sammanfattning : Today, there is a great focus on downsizing the engines, this means that the engines are made smaller in size but retain the same power. This in combination with the drive to increase the power of the engines has led to the engine components being exposed to high thermal loads. Today’s engines also use very high cylinder pressure. LÄS MER

  3. 22. Compressor CFD simulation method development : A CFD study

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

    Författare :Johan Björk; [2018]
    Nyckelord :CFD; centrifugal compressor; CFX; CHT; Conjugate Heat Transfer; Surge;

    Sammanfattning : This master thesis project consisted of three parts that all were performed through CFD simulations with the purpose to develop Scania's methods in the subject of CFD. All parts included simulations on Scania's SC92T70 centrifugal compressor. LÄS MER

  4. 23. BUILDING AND SIMULATING DYNAMIC MODELS OF DISTRICT HEATING NETWORKS WITH MODELICA : Using Matlab to process data and automate modelling and simulation

    Master-uppsats, Mälardalens högskola/Akademin för ekonomi, samhälle och teknik

    Författare :Cristoffer Kos; Kristoffer Hermansson; [2017]
    Nyckelord :Heat losses; flow reversal; heat propagation; visualization; CAD; components; object-oriented; bi-directional; Värmeförluster; reversibelt flöde; värmeutbredning; visualisering; komponenter; objekt-orienterat; riktningsoberoende;

    Sammanfattning : District heating systems are common in Nordic countries today and accounts for a great portion of the heat demand. In Sweden, total district heating end use in the last years has been around 50 TWh and district heating accounts for roughly 50 % of the total heat demand. LÄS MER

  5. 24. Modeling and Simulation of Cooling System for Fuel Cell Vehicle

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Elektricitetslära

    Författare :Samuel Swedenborg; [2017]
    Nyckelord :Cooling system; fuel cells; fuel cell vehicles;

    Sammanfattning : This report is the result of a master’s thesis project which covers the cooling system in Volvo Cars’ fuel cell test vehicle. The purpose is to investigate if the existing cooling system in the fuel cell test vehicle works with the current fuel cell system of the vehicle, in terms of sufficient heat rejection and thus sustaining acceptable temperature levels for the fuel cell system. LÄS MER

  7. 25. A THERMAL NETWORK MODEL FOR AN EVAPORATIVE COOLING SYSTEM COMBINED WITH A SOLAR CHIMNEY

    Kandidat-uppsats, KTH/Energiteknik

    Författare :LIVIO JACONELLI; KIM JACONELLI PALM; [2016]
    Nyckelord :;

    Sammanfattning : Syftet med denna studie är att, genom termiskt nätverksmodellering för kombinerad värme och massöverföring, undersöka möjligheten att integrera en solskorsten med en evaporationskyl. Avsikten är att potentiellt öka luftflödet runt kylen samt dess kylförmåga. LÄS MER