Search for dissertations about: "cavitation assessment"

Showing result 1 - 5 of 9 swedish dissertations containing the words cavitation assessment.

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

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

   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

4. 2. Developing Computational Methods for Detailed Assessment of Cavitation on Marine Propellers

   Author : Abolfazl Asnaghi; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LES; OpenFOAM; Numerical simulation; Hydrodynamics; Cavitation;

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

5. 3. Development and Assessment of Methods for the Prediction of Hydrodynamic and Ultrasound induced Cavitation

   Author : Ali Kadhim Hadi Alhelfi; Värmeöverföring; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Keywords: Bubble dynamics; Cavitation; Ultrasound; Acoustic waves; Sonoluminescence; Sonochemistry; and Boundary integral method.;

   Abstract : The cavitation phenomenon has today become a keystone for different areas of science and technology including various industrial processes and medicine. Recently increasing interest and much attention have been paid to study this phenomenon. READ MORE

6. 4. Numerical and Experimental Investigation of Hydrodynamic Mechanisms in Erosive Sheet Cavitation

   Author : Mohammad Hossein Arabnejad Khanouki; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Paint test; Numerical simulation; High speed visualization; Shedding behavior; Hydrodynamics mechanisms of cavitation erosion iii; Sheet cavitation;

   Abstract : Cavitation erosion is one of the limiting factors in the design of hydraulic machinery as it is associated with the reduction in the operating life-time of a hydraulic machine and a significant increase in maintenance cost. In order to be able to design a hydraulic machine with a low risk of cavitation erosion, understanding the hydrodynamic mechanisms controlling the cavitation erosion is of great importance. READ MORE

7. 5. Numerical Analysis of Cavitation-Induced Erosion in High-Pressure Fuel Injectors: under static and dynamic lift conditions

   Author : Mehmet Özgünoglu; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CFD; Cavitation Erosion; Fuel Injector; Wobbling;

   Abstract : Fuel injection systems are crucial for all modern combustion engines. These systems often operate under very high pressures to ensure fast spray breakup for optimal fuel air mixing leading to efficient combustion in order to meet strict emission standards. READ MORE