Essays about: "cfx"

Showing result 11 - 15 of 47 essays containing the word cfx.

  1. 11. Numerical analysis of aerodynamic damping in a transonic compressor

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

    Author : Vincenzo Stasolla; [2019]
    Keywords : transonic compressor; flutter; vibration; CFD; transonic kompressor; fladder; vibration; CFD;

    Abstract : Aeromechanics is one of the main limitations for more efficient, lighter, cheaper and reliable turbomachines, such as steam or gas turbines, as well as compressors and fans. In fact, aircraft engines designed in the last few years feature more slender, thinner and more highly loaded blades, but this trend gives rise to increased sensitivity for vibrations induced by the fluid and result in increasing challenges regarding structural integrity of the engine. READ MORE

  3. 12. Preliminary simulation of Porjus U9 turbine at speed no load

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Henrik Holmström; [2019]
    Keywords : Kaplan; Speed no-load; SNL;

    Abstract : Hydropower plants are shifting towards operating at off-designed conditions, meaning that the number of start-stop cycles and maintenance time due to cavitation increases. The speed no-load condition is the moment before magnetization of the generator, i.e., no load, low flow, constant runner rotational speed, guide vane and runner blade angle. READ MORE

  4. 13. 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

  5. 14. Investigation of performance and surge behavior of centrifugal compressors through CFD simulations

    University essay from KTH/Mekanik

    Author : Francesco Tosto; [2018]
    Keywords : centrifugal compressor; Computational Fluid Dynamics CFD ; RANS; surge; compressible uid dynamics; Design of Experiments DoE .; centrifugalkompressor; CFD-simulering; RANS; overskott; komprimerbar vatskedynamik; Design of Experiments DoE ;

    Abstract : The use of turbocharged Diesel engines is nowadays a widespread practice in the automotive sector: heavy-duty vehicles like trucks or buses, in particular, are often equipped with turbocharged engines. An accurate study of the flow field developing inside both the main components of a turbocharger, i.e. READ MORE

  6. 15. 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