Sökning: "turbine inlet guide vane"

Hittade 5 uppsatser innehållade orden turbine inlet guide vane.

1. 1. CFD Based External Heat Transfer Coefficient Predictions on a Transonic Film-Cooled Gas Turbine Guide Vane : A Computational Fluid Dynamics Study on the Von Karman Institute LS94 Test Case

   Master-uppsats, Linköpings universitet/Mekanisk värmeteori och strömningslära

   Författare :Rosalie Johnsson; Lilian Asiegbu; [2022]
   Nyckelord :gas turbine; turbine inlet guide vane; film-cool; film cool; Computational Fluid Dynamics; CFD; heat transfer coefficient; Shear Stress Transport k-ω; SST k-ω; Scale Resolving Hybrid; SRH; turbulence modelling;

   Sammanfattning : The turbine inlet guide vanes of a gas-turbine are subjected to extreme hot gas temperatures which increases the risk of mechanical failure and overall reduces the component lifespan. Hence, it is of great interest for gas-turbine manufacturers to establish methods for accurately estimating the temperature distribution along the vane surface. LÄS MER

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

   Master-uppsats, Linköpings universitet/Mekanisk värmeteori och strömningslära

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

   Sammanfattning : 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. LÄS MER

4. 3. Sensitivity Analysis in 3D Turbine CFD

   Master-uppsats, KTH/Mekanik

   Författare :Simon Kern; [2017]
   Nyckelord :;

   Sammanfattning : 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. LÄS MER

5. 4. Aerodynamic Loss Co-Relations and Flow- Field Investigations of a Transonic Film- Cooled Nozzle Guide Vane

   Master-uppsats, KTH/Kraft- och värmeteknologi

   Författare :Pak Wing Leung; [2015]
   Nyckelord :gas turbine; aerodynamics; secondary flow; external cooling; film cooling; aerodynamic loss; high pressure turbine; nozzle guide vane;

   Sammanfattning : Over the last two decades, most developed countries have reached a consensus that greener energy production is necessary for the world, due to the climate changes and limited fossil fuel resources. More efficient turbine is desirable and can be archived by higher turbine-inlet temperature (TIT). LÄS MER

7. 5. VGV optimization for performance

   Master-uppsats, Lunds universitet/Institutionen för energivetenskaper

   Författare :Sara Ling; Ted Sönne; [2014]
   Nyckelord :Twin-shaft; Tropical matched; Performance; Gas turbine; Ambient temperature; Variable guide vane; Siemens; Technology and Engineering;

   Sammanfattning : Today’s market for gas turbines is very competitive and it is important to constantly improve the performance of the engines. It is commonly known that gas turbines have better performance at low ambient temperatures than at high ambient temperatures. LÄS MER