Essays about: "nozzle guide vane"

Showing result 1 - 5 of 11 essays containing the words nozzle guide vane.

  1. 1. External Heat Transfer Coefficient Predictions on a Transonic Turbine Nozzle Guide Vane Using Computational Fluid Dynamics

    University essay from Linköpings universitet/Mekanisk värmeteori och strömningslära

    Author : Daniel Enico; [2021]
    Keywords : CFD; LS89; transonic turbine; transition; transition model; turbulence decay; turbulence intensity; length scale; turbulence characteristics; HTC; external heat transfer coefficient; Steelant-Dick postulation;

    Abstract : The high turbine inlet temperature of modern gas turbines poses a challenge to the material used in the turbine blading of the primary stages. Mechanical failure mechanisms are more pronounced at these high temperatures, setting the lifetime of the blade. READ MORE

  3. 2. Evaluation of CFD Methods for Prediction of Total Temperature and Total Pressure Distribution in Gas Turbines

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

    Author : Lars Fredrik Wahlgren; [2019]
    Keywords : ;

    Abstract : This thesis work was performed as a collaboration between the Royal Institute of Technology in Stockholm and Siemens Industrial Turbomachinery in Finspång. It was undertaken with the purpose of investigating the use of CFD methods in ANSYS CFX to predict flow mixing in gas turbines. READ MORE

  4. 3. Sensitivity Analysis in 3D Turbine CFD

    University essay from KTH/Mekanik

    Author : Simon Kern; [2017]
    Keywords : ;

    Abstract : A better understanding of turbine performance and its sensitivity to variations in the inletboundary conditions is crucial in the quest of further improving the efficiency of aero engines.Within the research efforts to reach this goal, a high-pressure turbine test rig has been designedby Rolls-Royce Deutschland in cooperation with the Deutsches Zentrum für Luft- und Raumfahrt(DLR), the German Aerospace Center. READ MORE

  5. 4. Transonic Flow Features in a Nozzle Guide Vane Passage

    University essay from KTH/Farkost och flyg; KTH/Mekanik

    Author : Alessandro Ceci; [2017]
    Keywords : CFD; LES; Indirect Combustion Noise; Aeroacoustics;

    Abstract : The entropy noise in modern engines is mainly originating from two types of mechanisms.First, chemical reactions in the combustion chamber lead to unsteady heat releasewhich is responsible of the direct combustion noise. READ MORE

  6. 5. ON SIMULATING COMPRESSIBLE FLOWS WITH A DENSITY BASED SOLVER

    University essay from KTH/Mekanik

    Author : Sathyanarayanan Chandramouli; [2016]
    Keywords : Coupled density based solver; High Pressure Turbine Nozzle Guide Vane;

    Abstract : A coupled density based solver in the framework of foam-extend is used to perform simulations of transonic flows. The solver is based on an explicit and time-accurate algorithm and is coupled to a compressible Unsteady Reynolds-Averaged Navier-Stokes (URANS) and a Large Eddy Simulation (LES) module. READ MORE