Essays about: "actuator disc model"

Showing result 1 - 5 of 6 essays containing the words actuator disc model.

  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. Evaluation of MPC and PI control on a Tribometer : Design and comparison of control methods for a Pin-on-Disc Tribometer

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : Ehab Ziad Raheem; Tore Malmström; [2023]
    Keywords : Control Theory; MPC; PI; PI-Cascade; Tribometer; Pin-on-Disc; Reglersystem; MPC; PI; PI-Kaskadreglering; Tribometer; Stift-På-Skiva;

    Abstract : This thesis compares Model Predictive Control (MPC) and Proportional-Integral (PI) control in a pin-on-disc tribometer. The tribometer consists of a geared Direct Current (DC) motor driving a flywheel and a voice coil actuating a pin onto the surface of the flywheel. READ MORE

  4. 3. Evaluation of linear force actuators in a pin-on-disc test rig application

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : JAKUB JAN RUPNIEWSKI; [2020]
    Keywords : ;

    Abstract : This thesis presents an evaluation and comparison of two linear actuators that can be used as load application actuators in a pin-on-disc tribological test rig. The first actuator is a DC-motor with an external ball screw, and the second actuator is a voice coil. READ MORE

  5. 4. Simplified modeling of wind-farm flows

    University essay from KTH/Strömningsfysik

    Author : Raphael Ebenhoch; [2015]
    Keywords : Wind tunnel; Blockage effect; Numerical wake model; Linearized RANS; Linearized actuator-disc theory; Internal boundary layer; Dispersive stresses; Simplied CFD model;

    Abstract : Abstact: In order to address the wind-industry's need for a new generation of more advanced wake models, which accurately quantify the mean flow characteristics within a reasonably CPU-time, the two-dimensional analytical approach by Belcher et al. (2003) has been extended to a three-dimensional wake model. READ MORE

  6. 5. Utveckling och validering av propellermodell baserat på rörelsemängdskälla för ett friströmningsfall

    University essay from Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Author : Linus Zimmerman; [2015]
    Keywords : CFD; propeller; simulering;

    Abstract : Propellersimulering genom Computational Fluid Dynamics (CFD) används mer och mer i ett tidigt designstadium gällande fartygs framdrift. Rolls-Royce Hydrodynamic Research Centre har lång erfarenhet av propellerdesign och analysarbete genom både modelltester och numerisk simulering, och CFD används idag för ett flertal olika tillämpningar och syften. READ MORE