Sökning: "CFD spray"

Visar resultat 1 - 5 av 34 avhandlingar innehållade orden CFD spray.

  1. 1. Modeling of Diesel Fuel Spray Formation and Combustion in OpenFOAM

    Detta är en avhandling från Chalmers University of Technology

    Författare :Anne Kösters; Chalmers tekniska högskola.; Chalmers University of Technology.; [2012]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mekanisk och termisk energiteknik; Mechanical and thermal engineering; Strömningsmekanik; Fluid mechanics; CFD; OpenFOAM; Diesel; Spray; Break-up; VSB2; PaSR; VRFM; Combustion;

    Sammanfattning : The formation, ignition, and combustion of fuel sprays are highly complex processes and the available models have various shortcomings. The development and application of multidimensional CFD models, that describe the different phenomena have rapidly increased through the use of commercial and public software (e.g. LÄS MER

  2. 2. Particle motion, coating and drying in Wurster fluidized beds - An experimental and discrete element modeling study

    Detta är en avhandling från Chalmers University of Technology

    Författare :Liang Li; Chalmers tekniska högskola.; Chalmers University of Technology.; [2015]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fluidized bed; particle; coating; drying; airflow; DEM; CFD; PEPT; Wurster; spray;

    Sammanfattning : This thesis focuses on developing a mathematical model that is capable of predicting the fluidized bed coating process. First a basic understanding of pellet motion in a Wurster fluidized bed was established by conducting a series of experiments using the positron emission particle tracking (PEPT) technique. LÄS MER

  3. 3. On the Spray Forming of Metals, the Formation of Porosity and the Heat Evolution during Solidification

    Detta är en avhandling från Stockholm : Metallernas gjutning

    Författare :José Tinoco; KTH.; [2003]
    Nyckelord :Thermal analysis; Nodular Cast Iron; Inconel 625; CFD; Flow Assesment; Multiphase Flow; Spray Deposition; Microporosity; Superalloys;

    Sammanfattning : This thesis deals with the heat evolution duringsolidification and its relation to the formation of porosity.It intends to improve the current understanding of theformation of porosity in cast materials with special interestin nodular cast iron and the spray forming process. LÄS MER

  4. 4. Numerical Modelling of Diesel Spray Injection, Turbulence Interaction and Combustion

    Detta är en avhandling från Chalmers University of Technology

    Författare :Fabian Kärrholm Peng; Chalmers tekniska högskola.; Chalmers University of Technology.; [2008]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Termisk energiteknik; Thermal energy engineering; Strömningsmekanik; Fluid mechanics; Spray; Computational Fluid Dynamics; Diesel; Turbulence Model; Cavitation; Atomization; Flame; Lift-off; Ignition Delay; Numerical Scheme; TVD; Combustion;

    Sammanfattning : This thesis covers two main topics. The first is numerical modelling of cavitating diesel injector flows, focusing on describing such flows using a single-phase cavitation model based on a barotropic equation of state together with a homogenous equilibrium assumption. LÄS MER

  5. 5. Characterization of Gasoline Spray-Wall Interactions

    Detta är en avhandling från Chalmers University of Technology

    Författare :Ronny Lindgren; Chalmers tekniska högskola.; Chalmers University of Technology.; [2004]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fysik; Physics; Teknisk mekanik; Engineering mechanics; spray-wall interaction; gasoline sprays; wall film; experiments; modeling; Phase Doppler Anemometry PDA ; Computational Fluid Dynamics CFD ;

    Sammanfattning : Interest in spray-wall interactions has intensified recently because of the development of direct injection spark ignition engines. In this type of engine, impingement of the spray on the piston and cylinder walls leads to increased emissions of hydrocarbons and soot. LÄS MER