Gas turbine performance is closely linked to the turbine inlet temperature, which is limited by the turbine guide vanes ability to withstand the massive thermal loads. Thus, steam cooling has been introduced as an advanced cooling technology to improve the efficiency of modern high-temperature gas turbines. This study compares the cooling performance of compressed air and steam in the renowned radially cooled NASA C3X turbine guide vane, using a numerical model. The conjugate heat transfer (CHT) ...
Tópico(s): Fluid Dynamics and Turbulent Flows
2021 - Multidisciplinary Digital Publishing Institute | Computation
Shokri Amzin, Sondre Norheim, Bjørn Olav Haugen, Bjørnar Rødland, Hassan Momeni,
Gravity-driven separators are broadly used in various engineering applications to remove particulate matters from gaseous fluids to meet legislation demands. This study represents a detailed numerical investigation of a two-phase cyclone separator using the Eulerian–Lagrangian gas flow method. The turbulence is modelled using the Reynolds stress model (RSM). The technique has successfully predicted the typical trends and variations seen in such gas separators with an average error of approximately ...
Tópico(s): Aerosol Filtration and Electrostatic Precipitation
2021 - Hindawi Publishing Corporation | Journal of Engineering