...Florian Lang; Maximilian Savtschenko; Vikas Yadav; Abdulla Ghani Prediction of successful ignition is a challenging task that requires knowledge of the local thermochemical state in highly turbulent flow conditions. For typical industrial gas turbine (GTs) conditions operated on active service...

...Patrick Krueger; Hanno Gottschalk; Bastian Werdelmann; Werner Krebs The need to burn 100% H 2 in high efficient gas turbines featuring low NO x combustion in premix mode requires the complete redesign of the combustion system to ensure stable operation without any flashback. Since all engine frames...

..., and (c) 1350 K 11 07 2022 22 07 2022 07 10 2022 chemical kinetics gas turbines internal combustion engines natural gas hydrogen oxidation ST auto-ignition Science Foundation Ireland 10.13039/501100001602 15/IA/3177 A large variation in concentration...

...-mail:  gilles.bourque@siemens-energy.com e-mail:  henry.curran@nuigalway.ie 13 07 2021 15 07 2021 13 10 2021 chemical kinetics gas turbines internal combustion engines oxidation natural gas ST IDT correlation Science Foundation Ireland 10.13039/501100001602 The authors...

...Dengji Zhou; Xingyun Jia; Jiarui Hao; Duocai Wang; Dawen Huang; Tingting Wei Frequent changes in operating conditions can result in the great loss of the service life of gas turbines that work at high speed, high pressure, and high temperature. To improve the control system of gas turbines...

...-mail:  i.goulos@cranfield.ac.uk e-mail:  devaiah.nalianda@cranfield.ac.uk e-mail:  v.pachidis@cranfield.ac.uk 27 08 2020 11 09 2020 13 01 2021 compound rotorcraft coaxial rotor redundant controls optimization gas turbines environmental impact aerodynamics control aerospace...

...Yanling Li; A. Duncan Walker; John Irving Impingement cooling is commonly employed in gas turbines to control the turbine tip clearance. During the design phase, computational fluid dynamics (CFD) is an effective way of evaluating such systems but for most turbine case cooling (TCC) systems...

... encounter environmental problems [ 3–5 ]. There are usually rotating members in most of the power MEMS devices, such as micro gas turbine engines, micro electrically driven compressors, and microturbopumps. Thrust bearings are required in those devices to support the high-speed rotating rotors and provide...

... of a High Fidelity Aero-Thermodynamic Turbofan Engine Simulation,” ASME Turbo Expo, Jun. 6-10, Vancouver, Canada, Paper No. GT2011-46661). 22 06 2011 05 08 2011 06 03 2012 06 03 2012 aerodynamics flow simulation gas turbines jet engines reduced order systems thermodynamics...

...Sung R. Choi; Zsolt Rácz Foreign object damage (FOD) phenomena of two gas-turbine grade silicon nitrides (AS800 and SN282) were assessed at ambient temperature applying impact velocities from 20 to 300 m/s using 1.59-mm diameter hardened steel ball projectiles. Targets in a flexural configuration...

...Francesco Melino; Mirko Morini; Antonio Peretto; Michele Pinelli; Pier Ruggero Spina Gas turbine axial compressor performance is heavily influenced by blade fouling. As a result, the gas turbines efficiency and producible power output decrease. Performance degradation of an axial compressor stage...

... between each stage. More work is available in expansion than is required during re-compression, so the device is a heat engine. The device provides a relatively cheap way to boost the power output of open-cycle gas turbines. The principal assumptions for the theoretical model developed herein are that air...

...Roland Mücke; Klaus Rau Modern heavy-duty gas turbines operate under hot gas temperatures that are much higher than the temperature capability of nickel superalloys. For that reason, advanced cooling technology is applied for reducing the metal temperature to an acceptable level. Highly cooled...

... air turbine (AHAT) system has been studied to improve operational flexibility and thermal efficiency of the gas turbine power generation system. Advanced humid air turbine is an original system which substitutes the water atomization cooling (WAC) system for the intercooler system of the HAT cycle...

...Antonio Andreini; Riccardo Da Soghe Jet array is an arrangement typically used to cool several gas turbine parts. Some examples of such applications can be found in the impingement cooled region of gas turbine airfoils or in the turbine blade tip clearances control of large aero-engines. In order...

...John Blouch; Hejie Li; Mark Mueller; Richard Hook The LM2500 and LM6000 dry-low-emissions aeroderivative gas turbine engines have been in commercial service for 15 years and have accumulated nearly 10 × 10 6 hours of commercial operation. The majority of these engines utilize pipeline quality...

... , “ Instability Threshold and Stability Boundaries of Rotor-Bearing Systems ,” ASME J. Eng. Gas Turbines Power , 118 ( 1 ), pp. 115 – 121 . 10.1115/1.2816526 4 Lund , J. W. , 1974 , “ Stability and Damped Critical Speeds of a Flexible Rotor in Fluid Film Bearings ,” ASME J. Eng. Ind. , 96 ( 2...

...Eric Petersen; Madeleine Kopp; Nicole Donato; Felix Güthe Chemiluminescence continues to be of interest as a cost-effective optical diagnostic for gas turbine combustor health monitoring. However, most chemical kinetics mechanisms of the chemiluminescence of target species such as OH*, CH*, and CO...

... systems. In this paper, a diagnosis strategy based on Poincaré maps will be presented to evaluate dynamic systems’ behavior with application to power generating gas turbines based on the repeatability of the transition trajectories. Using this approach, extensive operating data for three 85 MW simple...

... damping and tolerance to minor shaft misalignment and external shocks. In addition, the low viscosity of air or gas allows very low power consumption even at high speeds. A turbine simulator mimicking 50 kW power generation gas turbine was designed. The turbine simulator can generate the same...