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Showing result 21 - 25 of 61 essays matching the above criteria.

  1. 21. CFD calculations and comparison with measured data in a film cooled 1.5 stage high pressure test turbine : With two configurations of swirlers clocking

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

    Author : Ellen Hallbäck; [2018]
    Keywords : Turbine; CFD; Clocking configuration; Turbin; CFD; virvlareposition;

    Abstract : The gas turbine has an important role for the energy distribution due to its stability and flexibility. By increasing turbine inlet temperature (TIT) an increased thermal efficiency of the turbine can be achieved. The biggest limitation of the TIT is the material of the turbine components. READ MORE

  3. 22. Control Oriented Modelingof Engine Out Temperatures

    University essay from Linköpings universitet/Fordonssystem

    Author : Lars Malm; [2018]
    Keywords : ;

    Abstract : To have knowledge about the exhaust temperature is of great importance in several ways. Knowing the exhaust temperature means that it is easier to protect the catalyst and turbine from too high temperatures but it also important in controlling the turbine power.In this thesis a physically based model of the engine out temperature is developed. READ MORE

  4. 23. Economical optimization of steam data for recovery boilers

    University essay from Umeå universitet/Institutionen för tillämpad fysik och elektronik

    Author : Johan Jansson; [2017]
    Keywords : Recovery boiler;

    Abstract : Pulp and paper mills are high power consuming industries. Pulp and integrated mills produce power via steam turbines in recovery boilers. READ MORE

  5. 24. 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

  6. 25. 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