Essays about: "rotor disc."

Showing result 1 - 5 of 11 essays containing the words rotor disc..

  1. 1. Propulsion modelling of a generic submarine propeller

    University essay from KTH/Skolan för teknikvetenskap (SCI)

    Author : Gustav Boman; [2023]
    Keywords : OpenFOAM; CFD; actuator line model; rotor disk; actuator disk; INSEAN E1619; propeller;

    Abstract : Self propulsion modelling is important in order to accurately simulate ships and submarinesusing Computational Fluid Dynamics (CFD). However, fully resolved simulations of hull andpropeller geometries are computationally heavy and time consuming. As such there is a greatinterest in lower order CFD models of propellers. READ MORE

  3. 2. Development of Test Rig and Experimental Evaluation of Hydrostatic Bearings for an Axial Flux Machine

    University essay from KTH/Maskinkonstruktion (Inst.)

    Author : Amir Avdic; Kishore-Babu Vejendla; [2022]
    Keywords : viscous losses; hydrostatic bearing; hydrodynamics; thin oil film.; Viskösa förluster; generator; hydrostatiska lager; hydrodynamik; tunn oljefilm.;

    Abstract : A novel electric machine design, similar to an axial flux machine, incorporates hydrostatic bearings to increase efficiency and stability of said machine. In this thesis, the feasibility of a hydrostatic solution is explored and evaluated by development, manufacturing, and assembly of a test rig, as well as running experimental tests with it. READ MORE

  4. 3. Correlation of numerical simulation methods and failure criteria to experimental burst test

    University essay from Lunds universitet/Institutionen för byggvetenskaper; Lunds universitet/Hållfasthetslära

    Author : Karlo Kasljevic; [2020]
    Keywords : Gas; Rotor; Turbine; Overspeed; Burst; Test; Strength; Analysis; Failure; Criteria; Burst margin; Stress analysis; Finite element method; Rotating disc; Burst Strength; Turbine disc; turbo-engine disk; Fracture; Blisk; Correlation study; Technology and Engineering;

    Abstract : Predicting the burst speed of turbine rotors is a costly and challenging task. Therefore, the scope of this thesis is to perform a correlation study between numerical simulation methods and failure criteria to experimental over-speed burst test of the Prometheus turbine rotor. READ MORE

  5. 4. Analysis of Barreling and Tolerance Effects of Blade Attachments

    University essay from KTH/Hållfasthetslära (Avd.)

    Author : Yuanyuan Xu; [2018]
    Keywords : ;

    Abstract : In a gas turbine rotor, the Blade-Disc attachment is often a critical part. This part needs to endure both high contact stress and high temperature. Thus, the prediction of the life of the attachment becomes important.  Furthermore, the refinement of the Blade-Disc attachment is worth to study, to extend the lifetime of the turbine rotor. READ MORE

  6. 5. CFD Analysis of Pressure Instabilities in Stator-Rotor Disc Cavity Systems

    University essay from Linköpings universitet/Mekanisk värmeteori och strömningslära

    Author : Pedro Santiago Parras Blázquez; [2017]
    Keywords : ;

    Abstract : The continuous demand to improve turbine performance has led manufactures to focus on aspects that have been previously considered of secondary importance such as the secondary air system. The purpose of this system is to cool the components and prevent ingestion of hot gas into the stator-rotor cavity that could lead to low frequency pressure fluctuations called Cavity Flow Instabilities. READ MORE