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Keywords: axial turbine
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Proceedings Papers

Proc. ASME. GT2023, Volume 12: Supercritical CO2, V012T28A024, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103587
... axial turbine base drag Brayton cycle incidence linear cascade loss model profile loss coefficient supercritical CO2 Abstract Axial flow turbines can be efficiently designed and used in megawatt scale sCO2 closed Brayton power systems. Empirical loss models are required for design...
Proceedings Papers

Proc. ASME. GT2023, Volume 12: Supercritical CO2, V012T28A003, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-101511
...Proceedings of ASME Turbo Expo 2023 Turbomachinery Technical Conference and Exposition GT2023 June 26-30, 2023, Boston, Massachusetts, USA GT2023-101511 A Comparison of Flow Path Designs for Axial Turbines Operating with Pure CO2 and CO2 Mixtures Salma I. Salah1, Martin T. White 1,2, Abdulnaser I...
Proceedings Papers

Proc. ASME. GT2023, Volume 13B: Turbomachinery — Axial Flow Turbine Aerodynamics, V13BT30A027, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103119
... loss was observed, which could be attributed to a rise in the secondary loss due to roughness. This result indicates that potential loss-reduction mechanism might be caused by the relative motion of the blade tip surface and the rough casing wall or by vortex interactions. axial turbine tip...
Proceedings Papers

Proc. ASME. GT2023, Volume 13B: Turbomachinery — Axial Flow Turbine Aerodynamics, V13BT30A040, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103877
... axial turbine secondary flows purge volumetric velocimetry endwall contouring Abstract Purge flows are prevalent in modern gas turbine design allowing for increased turbine entry temperatures. The purge flow passes through a rim seal and interacts with the mainstream flow, modifying...
Proceedings Papers

Proc. ASME. GT2023, Volume 13D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery, V13DT36A001, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-100884
... unsteadiness. unsteady flows axial turbine scale sesolving simulation combustor-turbine-interaction realistic boundary conditions Proceedings of ASME Turbo Expo 2023 Turbomachinery Technical Conference and Exposition GT2023 June 26-30, 2023, Boston, Massachusetts, USA GT2023-100884 THE EFFECT...
Proceedings Papers

Proc. ASME. GT2022, Volume 10B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing; Radial Turbomachinery Aerodynamics, V10BT30A028, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-82852
...Proceedings of ASME Turbo Expo 2022 Turbomachinery Technical Conference and Exposition GT2022 June 13-17, 2022, Rotterdam, The Netherlands GT2022-82852 NUMERICAL INVESTIGATION OF LOSS MECHANISMS IN A PARTIALLY LOADED SUPERSONIC ORC AXIAL TURBINE STAGE Karl Ziaja1, Pascal Post1, Andreas Schramm1...
Proceedings Papers

Proc. ASME. GT2022, Volume 2: Coal, Biomass, Hydrogen, and Alternative Fuels; Controls, Diagnostics, and Instrumentation; Steam Turbine, V002T20A008, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-80950
... solidity. Keywords: Axial Turbine, Tip leakage, Blade damage, Steam Turbine, Five-Hole-Probe NOMENCLATURE bx axial chord, m c velocity, m/s Cp pressure coefficient h span, - H shape factor, - Ma Mach number, - p pressure, - R specific gas constant, J/(kg K) Re Reynolds number, - Rt roughness parameter, m s...
Proceedings Papers

Proc. ASME. GT2021, Volume 2B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing, V02BT32A012, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59701
...-surface with purge flow. Importantly, where the vortex filaments demonstrated strong radial or tangential components of velocity, the circulation level calculated from axial planes underpredicted the true circulation by up to 50%. axial turbine secondary flows purge volumetric velocimetry vortex...
Proceedings Papers

Proc. ASME. GT2021, Volume 2B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing, V02BT32A007, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59219
... pitch-to-chord ratios, which lead to a reduction in overall profile losses, and higher velocity ratios and lower turning angles, which reduce airfoil secondary flows and three-dimensional losses. axial turbine high speed turbine intermediate pressure turbine geared turbofan aerodynamic design...
Proceedings Papers

Proc. ASME. GT2021, Volume 2C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V02CT34A022, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59414
... model result. The work fluid considered in this secondary flow making the flowfield even more turbulent and work was water, the same fluid used in the NASA test facility. complex. Moreover, the flow that leaks in the tip region does not Keywords: Turbomachinery, Axial Turbine, CFD, participate...
Proceedings Papers

Proc. ASME. GT2021, Volume 2D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery, V02DT36A015, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59682
... Proceedings of ASME Turbo Expo 2021 Turbomachinery Technical Conference and Exposition GT2021 June 7-11, 2021, Virtual, Online GT2021-59682 IMPROVEMENT OF AERODYNAMIC AND STRENGTH CHARACTERISTICS OF A MULTI-SHAFT AXIAL TURBINE OF A TURBOSHAFT ENGINE Grigorii Popov Evgenii Goriachkin Dr. Igor...
Proceedings Papers

Proc. ASME. GT2021, Volume 7: Industrial and Cogeneration; Manufacturing Materials and Metallurgy, V007T16A001, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-01559
... a compressor. For a comprehensive investigation, ORC off-design operating range is explored too assuming one out of three topper cycle units out of service. Since a direct coupling of the ORC driver and the gas compressor is expected, thus excluding the use of gearboxes to avoid losses, an ORC axial turbine...
Proceedings Papers

Proc. ASME. GT2020, Volume 9: Oil and Gas Applications; Organic Rankine Cycle Power Systems; Steam Turbine, V009T22A002, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15219
... results in the configuration under investigation. organic Rankine cycle axial turbine real gas CFD supersonic partial admission loss model NUMERICAL INVESTIGATION OF A PARTIALLY LOADED SUPERSONIC ORC TURBINE STAGE Karl Ziaja1, Pascal Post1, Marwick Sembritzky1, Andreas Schramm1, Ole Willers2...
Proceedings Papers

Proc. ASME. GT2020, Volume 2D: Turbomachinery, V02DT36A015, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15117
... Abstract Diffuser is a key component affecting the aerodynamic performance of an axial turbine significantly. However, there is little research on the matching parameters between a rotor and a diffuser. In present study, effect of matching parameters which are normalized axial clearance (A CLR...
Proceedings Papers

Proc. ASME. GT2020, Volume 11: Structures and Dynamics: Structural Mechanics, Vibration, and Damping; Supercritical CO2, V011T31A015, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15651
... axial turbine blade loading Brayton cycle flow deflection linear cascade loss coefficient supercritical CO2 wake Abstract Axial turbines are being extensively designed for supercritical carbon-di-oxide (S-CO2) Brayton cycle power blocks. But very little information is available...
Proceedings Papers

Proc. ASME. GT2008, Volume 6: Turbomachinery, Parts A, B, and C, 1419-1426, June 9–13, 2008
Publisher: American Society of Mechanical Engineers
Paper No: GT2008-51340
..., are illustrated with spectral measurements immediately downstream a single-stage turbine using the Chalmers large-scale turbine facility. The spectra are obtained from area traverses with a 2-component hot-wire. Turbulence Integral length scales Spectral analysis Axial turbine Intermediate turbine duct...
Proceedings Papers

Proc. ASME. GT2004, Volume 5: Turbo Expo 2004, Parts A and B, 993-1002, June 14–17, 2004
Publisher: American Society of Mechanical Engineers
Paper No: GT2004-53039
... The tip-leakage losses in axial turbines with unshrouded rotor blades can account for as much as one third of the total losses. Various effects are influencing the tip-leakage flow and losses. This paper presents results of an experimental investigation concerning off-design incidences. Off...
Proceedings Papers

Proc. ASME. GT2005, Volume 6: Turbo Expo 2005, Parts A and B, 1107-1116, June 6–9, 2005
Publisher: American Society of Mechanical Engineers
Paper No: GT2005-68503
... Axial Turbine CFD Performance Temperature Distortion Hot Streaks It is known that the exit flow from the combustor entering a turbine stage will have wide spatial variations in temperature both radially and circumferentially. This phenomenon is amplified in military engines, due...