Sökning: "Computational Fluid Dynamics CFD"

Visar resultat 1 - 5 av 236 avhandlingar innehållade orden Computational Fluid Dynamics CFD.

  1. 1. Permeability of non-crimp fabrics : a computational fluid dynamics approach

    Detta är en avhandling från Luleå : Luleå tekniska universitet

    Författare :Markus Nordlund; [2004]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Strömningslära; Fluid Mechanics;

    Sammanfattning : In the present market for manufacturing of high performance structural parts for various applications such as aerospace, transportation, infrastructure, marine, sports and recreation, low weight, high performance composites are preferable. Non-Crimp Fabrics (NCFs) are often used for such applications due to its high mechanical properties and often cost effective production. LÄS MER

  2. 2. Waterjet inlet design optimization using CFD and direct search

    Detta är en avhandling från Göteborg : Chalmers University of Technology

    Författare :Jakob Hultén; Göteborgs universitet.; Gothenburg University.; [2001]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; optimization; optimal design; direct search; pattern search; surrogate objective; CFD; fluid dynamics; waterjet inlet; parametric geometry;

    Sammanfattning : .... LÄS MER

  3. 3. Turbomachinery Aeroacoustic Calculations using Nonlinear Methods

    Detta är en avhandling från Göteborg : Chalmers University of Technology

    Författare :Martin Olausson; [2011]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Nonlinear; CFD; Time Spectral; CAA; Ffowcs-Williams Hawkings; Broadband; Time lag; Computational Aeroacoustics; Fan-Noise; Rotor-Stator interaction; Buffer layer; Oscillating sphere; Newton-GMRES; Computational Fluid Dynamics; Acoustic analogies; Sponge; Counter-Rotating Propfan; Harmonic Balance Technique; Tone; FWH; Chorochronic periodicity; Hybrid RANS LES;

    Sammanfattning : Noise regulations for aircraft that fly over populated areas are becoming continuously stricter. This in combination with increasing computational capabilities has boosted interest in aeroacoustic computations in the aerospace industry. LÄS MER

  4. 4. Numerical Modelling of Dissolved Air Flotation

    Detta är en avhandling från Göteborg : Chalmers University of Technology

    Författare :Mia Bondelind; [2009]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Computational Fluid Dynamics CFD ; 2D; multiphase flow; one-phase; 3D; turbulence; Dissolved Air Flotation DAF ;

    Sammanfattning : Dissolved Air Flotation (DAF), a well-established treatment method for water containing e.g. dissolved organic matter and Cryptosporidium, has previously been examined experimentally. However, most measuring techniques still suffer from disturbances from air bubbles and intrusion of the measuring equipment into the flow. LÄS MER

  5. 5. Computational strategies in flame-spread modelling involving wooden surfaces

    Detta är en avhandling från Fire Safety Engineering and Systems Safety

    Författare :Jörgen Carlsson; [2003]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; flamspridning; computational methods; pyrolysis modelling; fire modelling; fire growth; flame spread; Computational Fluid Dynamics; CFD; brandtillväxt; brandmodellering; pyrolysmodellering;

    Sammanfattning : Various approaches to flame-spread and fire-growth modelling are discussed and are evaluated using experimental results from different tests. Use of Computational Fluid Dynamics, CFD, in fire modelling is discussed and the performance of different CFD codes in wall flow modelling is analysed. LÄS MER