Search for dissertations about: "cavitation"

Showing result 1 - 5 of 72 swedish dissertations containing the word cavitation.

  1. 1. Cavitation Mechanisms Related to Erosion Studies on Kaplan Turbines, Foils, and Propellers

    Author : Mikael Grekula; [2010]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; cavitation mechanisms; hydrodynamics; Cavitation; cavitation assessment; cavitation erosion; experimental studies; cavitation noise;

    Abstract : The overall aim of this thesis work is to study cavitation behaviours related to erosion. The focus is on processes of observable scale, i.e. the process prior to the micro scale level at which the actual damage is generated. READ MORE

  2. 2. Modelling Cavitation Mechanisms Using Large Eddy Simulation

    Author : Nai Xian Lu; [2013]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; hydrodynamics; Cavitation; cavitation erosion; cavitation mechanisms; numerical simulation; LES;

    Abstract : Cavitation often brings negative effects such as performance degradation, noise and vibration, and material damage, being one of the limiting factors when designing propulsion systems. On the other hand, cavitation must be endured for an efficiently propelled system. READ MORE

  3. 3. Computational Modelling for Cavitation and Tip Vortex Flows

    University dissertation from ; Chalmers tekniska högskola; Gothenburg

    Author : Abolfazl Asnaghi; [2018]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cavitation; SST k − ω; OpenFOAM; Propeller; LES; Numerical simulation; Cur- vature correction; Elliptical foil; Inception; Twisted Delft foil;

    Abstract : Cavitation often brings negative effects, such as performance degradation, noise, vibration, and material damage, to marine propulsion systems, but for optimum performance, cavitation is almost inevitable. Therefore, it is necessary to better understand cavitation in order to maximize the performance without encounter- ing severe problems. READ MORE

  4. 4. LES stochastic modelling of cavitation with its applications in OpenFOAM

    University dissertation from ; Chalmers tekniska högskola; Gothenburg

    Author : Boxiong Chen; [2019]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Rayleigh-Plesset Equation; Cavitation; Modelling; Simulation; Eulerian Stochastic Field Method; OpenFOAM; Homogeneous Equilibrium Model;

    Abstract : Cavitation is a vaporization process that commonly happens in high-pressure injector nozzles nowadays. It has been shown by previous studies that cavitation has a significant influence on the subsequent atomization process, the quality of which would in turn heavily affect the process of combustion. READ MORE

  5. 5. LES stochastic modelling of cavitation with its applications in OpenFOAM

    University dissertation from ; Chalmers tekniska högskola; Gothenburg

    Author : Boxiong Chen; [2016]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Cavitation; Rayleigh-Plesset Model; Simulation; OpenFOAM; Volume of Fluid Method; Modeling;

    Abstract : Cavitation is a vaporisation process that commonly happens in high pressure injectornozzles nowadays. It has been shown by previous studies that cavitationhas a significant influence on the subsequent atomization process, the qualityof which would in turn heavily affect the quality of combustion. READ MORE