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Keywords: turbine
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Proceedings Papers

Proc. ASME. GT2023, Volume 9: Microturbines, Turbochargers, and Small Turbomachines; Oil and Gas Applications, V009T18A007, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-102204
.... The case study used for model development is a high-performance turbocharger turbine for automotive applications, responding to engine load transients of tenths of seconds. Initially, steady-state CFD and CHT models of the turbine stage are validated against experimental data. Then, transient analyses...
Proceedings Papers

Proc. ASME. GT2023, Volume 10: Steam Turbine, V010T20A006, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-101392
... Abstract To ensure safe and reliable operation, steam turbine casings and piping must have acceptable stresses and maintain sealing when subjected to internal pressures and temperatures. Analysts conduct structural evaluations using finite element analysis (FEA) techniques to show acceptance...
Proceedings Papers

Proc. ASME. GT2023, Volume 12: Supercritical CO2, V012T28A023, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103328
... Abstract A 300 MWe direct-fired supercritical carbon dioxide (sCO 2 ) oxy-fuel turbine is being developed that will burn natural gas-fired, coal syngas and even hydrogen mixtures capable of 1,150°C turbine inlet temperature at 300 bar. This design will significantly improve the state-of-the-art...
Proceedings Papers

Proc. ASME. GT2023, Volume 14: Wind Energy, V014T37A003, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-101689
... Abstract The maintenance of wind turbines is essential to reduce wind energy levelized costs. Earlier detection of potential faults in the rotating subcomponents, such as the drivetrain, helps to plan maintenance actions. Several vibration processing methods, e.g., short-time Fourier analysis...
Proceedings Papers

Proc. ASME. GT2023, Volume 14: Wind Energy, V014T37A001, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-101596
... a calculated threshold. Next, the reporting step lists the cyclic order, carrier frequency band, and their respective alarm numbers. Five years of data from five different turbines in the field is used to train the autoencoder. The evaluation is validated on data from two faulty and eight healthy turbines...
Proceedings Papers

Proc. ASME. GT2023, Volume 14: Wind Energy, V014T37A004, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-101713
... are expected. Wind turbine assets require regular inspection and maintenance to ensure performance, compliance to standards and insurance requirements. A range of approaches are used in inspection and maintenance including airborne and platform mounted technologies, robots, as well as accessing the blades...
Proceedings Papers

Proc. ASME. GT2023, Volume 2: Ceramics and Ceramic Composites; Coal, Biomass, Hydrogen, and Alternative Fuels, V002T02A004, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-101601
... vanes for high pressure turbines (HPTs) have been researched and tested in the past. A realistic design approach for cooled CMC vanes is the so-called shell and spar concept. The application of such vanes in HPTs as inlet guide vanes (IGVs) at constant rotor inlet temperature (T41) enables performance...
Proceedings Papers

Proc. ASME. GT2023, Volume 13D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery, V13DT35A004, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-101738
... conditions. A Mixed Flow Turbine (MFT) is not constrained to a radial inlet blade angle allowing the peak efficiency to be shifted to a lower U / C _is , providing additional freedom to the designer. As the MFT leading edge varies in radius, the spanwise incidence angle also varies, leading to additional...
Proceedings Papers

Proc. ASME. GT2023, Volume 13D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery, V13DT34A016, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-102700
... Abstract This paper presents a new, rapid, flexible approach for turbine blade section design combining algorithmic and inverse techniques to enable automatic generation of blade sections guaranteed to conform to multidisciplinary requirements, with the aim of accelerating turbomachinery design...
Proceedings Papers

Proc. ASME. GT2023, Volume 13B: Turbomachinery — Axial Flow Turbine Aerodynamics, V13BT30A034, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103488
... Abstract In this paper the study of an axial turbine with a supersonic rotor has been performed for a full stage turbine. The state-of-the art supersonic stages include supersonic stators that create shock waves that enter the rotor stage disturbing the flow. The current study proposes a semi...
Proceedings Papers

Proc. ASME. GT2023, Volume 13B: Turbomachinery — Axial Flow Turbine Aerodynamics, V13BT30A033, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103487
... Abstract This manuscript is on the aerodynamic characterization of a turbine particularly when the turbine loses its load permanently such as after a shaft or transmission failure. These conditions cause excessive acceleration of the turbine stage or stages. If not mitigated, a disk burst may...
Proceedings Papers

Proc. ASME. GT2023, Volume 13B: Turbomachinery — Axial Flow Turbine Aerodynamics, V13BT30A032, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103451
... supersonic turbine performance. Several approaches were proposed and evaluated using 2D CFD periodic inviscid computations with SU2 solver focusing on the shape, thickness, and deflection of the stator’s trailing edge. The chosen approach is based on a horizontal plate that represents the trailing edge...
Proceedings Papers

Proc. ASME. GT2023, Volume 13B: Turbomachinery — Axial Flow Turbine Aerodynamics, V13BT30A039, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103860
... Abstract Efficiency is an essential metric for assessing turbine performance. Modern turbines rely heavily on numerical computational fluid dynamic (CFD) tools for design improvement. With more compact turbines leading to lower aspect ratio airfoils, the influence of secondary flows...
Proceedings Papers

Proc. ASME. GT2023, Volume 13C: Turbomachinery — Deposition, Erosion, Fouling, and Icing; Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V13CT32A030, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103064
... Abstract During operation, turbine blades in aircraft engines can experience flows over a wide range of Reynolds numbers. This range is impacted by engines of different sizes, as well as different operating altitudes, all of which add to the overall range of Reynolds numbers that are relevant...
Proceedings Papers

Proc. ASME. GT2023, Volume 7B: Heat Transfer — General Interest/Additive Manufacturing Impacts on Heat Transfer; Internal Air Systems; Internal Cooling, V07BT14A013, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103022
... system for the purpose of the experiments with brush seals was developed allowing an accurate setting of the eccentric interference during the rub tests. Various types of tests were carried out to cover the different types of rub experienced within the operating range of a low pressure turbine. Known...
Proceedings Papers

Proc. ASME. GT2023, Volume 7A: Heat Transfer — Combustors; Film Cooling, V07AT11A007, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103853
... been carried out to guarantee an accurate resolution of most of the flow structures while keeping the computational cost low. Firstly, a fully integrated combustor-nozzle setup, including a realistic turbine nozzle cooling system has been investigated under realistic operating conditions. The results...
Proceedings Papers

Proc. ASME. GT2023, Volume 7A: Heat Transfer — Combustors; Film Cooling, V07AT11A003, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103017
... Abstract In order to further improve gas turbine efficiency and performance and reduce NOx emissions, the ever-increasing employment of lean-premix combustors results in very severe, complex and unsteady conditions at the inlet of the first stage nozzle, introducing a possible alteration...
Proceedings Papers

Proc. ASME. GT2022, Volume 10B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing; Radial Turbomachinery Aerodynamics, V10BT30A018, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-82137
...Proceedings of ASME Turbo Expo 2022 Turbomachinery Technical Conference and Exposition GT2022 June 13-17, 2022, Rotterdam, The Netherlands GT2022-82137 MIXING MECHANISM OF MULTI-SCALE FLOW IN TIP REGION OF TURBINE ROTOR Lin Huang1,2, Zhengping Zou2,3,* 1School of Energy & Power Engineering, Beihang...
Proceedings Papers

Proc. ASME. GT2022, Volume 2: Coal, Biomass, Hydrogen, and Alternative Fuels; Controls, Diagnostics, and Instrumentation; Steam Turbine, V002T20A003, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-79398
... Abstract Among the heat to power cycles the historically first successful technologies used cycles with steam expansion machines in its core. In the first phase as of the eighteenth century, reciprocating steam engines dominated. As of 1890 steam turbines were developed, which replaced...
Proceedings Papers

Proc. ASME. GT2022, Volume 6B: Heat Transfer — General Interest/Additive Manufacturing Impacts on Heat Transfer; Internal Air Systems; Internal Cooling, V06BT13A005, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-79662
... Abstract Practically, a gas-turbine engine’s first-stage nozzle guide vane (NGV) must operate under extreme conditions induced by high temperatures from burned gases, causing severe damage to the vane, such as cracks or fatigue failures. As a result, the first stage NGV’s lifespan is shortened...