Sökning: "CFD-analysis"

Visar resultat 41 - 45 av 60 uppsatser innehållade ordet CFD-analysis.

  1. 41. CFD-analysis of buoyancy-driven flow inside a cooling pipe system attached to a reactor pressure vessel

    Master-uppsats, Linköpings universitet/Mekanisk värmeteori och strömningslära; Linköpings universitet/Tekniska högskolan

    Författare :Jens Petersson; [2014]
    Nyckelord :CFD; OpenFOAM; LES; nuclear reactor pressure vessel;

    Sammanfattning : In this work a cooling system connected to a reactor pressure vessel has been studied using the CFD method for the purpose of investigating the strengths and shortcomings of using CFD as a tool in similar fluid flow problems within nuclear power plants. The cooling system is used to transport water of 288K (15°C) into a nuclear reactor vessel filled with water of about 555K (282°C) during certain operating scenarios. LÄS MER

  3. 42. Aero-Design of Aerodynamically Lifting Struts for Intermediate Compressor Ducts

    Master-uppsats, KTH/Aerodynamik

    Författare :Robin Bergstedt; [2014]
    Nyckelord :;

    Sammanfattning : Increasing demands on the performance and sustainability of modern turbofan engines put high requirements on each system component, and the limit of what is possible is expected to continue to extend. This thesis focuses on studies on the so-called turning struts concept which aims to shorten the compressor module of a future turbofan engine by introducing aerodynamically modified struts in the compressor mid-frame. LÄS MER

  4. 43. Unsteady 3D CFD analysis of a 11=2-stage turbine with focus on heat transfer validation

    Master-uppsats, KTH/Mekanik

    Författare :Alexander Axelsson; [2014]
    Nyckelord :;

    Sammanfattning : The turbine mid-structure is a component located downstream of the high-pressure turbine in modern turbo-fan engines. It is exposed to high gas temperatures. It is therefore of intererst to predict heat transfer in this component. LÄS MER

  5. 44. Coupled CFD and thermomechanical analysis of cooling in a die quenching tool

    Master-uppsats, Linköpings universitet/Mekanisk värmeteori och strömningslära; Linköpings universitet/Tekniska högskolan

    Författare :Marcus Timgren; [2014]
    Nyckelord :;

    Sammanfattning : In the vehicle industry today materials are sought that are both light and have a high strength. One manufacturing method that can produce parts with both these properties is a method called die quenching. LÄS MER

  7. 45. Hydrodynamic Shape Optimization of Trawl Doors with Three-Dimensional Computational Fluid Dynamics Models and Local Surrogates

    Master-uppsats, KTH/Kraft- och värmeteknologi

    Författare :Elvar Hermannsson; [2014]
    Nyckelord :Trawl door; hydrodynamics; optimization; SBO; CFD; local surrogates; response surfaces.;

    Sammanfattning : Rising fuel prices have been inflating the operating costs of the fishing industry. Trawl doors are used to hold the fishing net open during trawling operations, and they have a great influence on the fuel consumption of vessels. Improvements in the design of trawl doors could therefore contribute significantly to increased fuel efficiency. LÄS MER