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1-14 of 14
Keywords: leakage flow
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Proceedings Papers
Dimitrios Lamprakis, David John Rajendran, Mani Santhanakrishnan, Seyfettin Coskun, Ioannis Roumeliotis, Vassilios Pachidis, Martin Yates
Proc. ASME. GT2024, Volume 5: Cycle Innovations, V005T06A034, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-128734
... Abstract A comprehensive operational characterisation of a representative, Liquid Hydrogen (LH2) aircraft engine pump, a key enabler for future hydrogen aviation, is presented in this work. The implications of leakage flows are investigated in a 2-stage, high-pressure pump for a wide range...
Proceedings Papers
Proc. ASME. GT2024, Volume 7: Heat Transfer: Combustors; Heat Transfer: Film Cooling, V007T12A005, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-122469
... performance improves. As the coolant flow rate increases, the cooling performance gets better. blade tip tip cooling leakage flow numerical calculation Proceedings of ASME Turbo Expo 2024 Turbomachinery Technical Conference and Exposition GT2024 June 24-28, 2024, London, United Kingdom GT2024...
Proceedings Papers
Proc. ASME. GT2024, Volume 12A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V12AT29A019, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-124540
... components, exacerbating leakage flow deterioration. Concurrently, the degree of leakage vortex fragmentation is weakened, controlling the accumulation of low-energy fluid within the passage. Furthermore, tip winglets prevent the concentration of low-energy fluid in the radial region, effectively enhancing...
Proceedings Papers
Proc. ASME. GT2023, Volume 7B: Heat Transfer — General Interest/Additive Manufacturing Impacts on Heat Transfer; Internal Air Systems; Internal Cooling, V07BT14A010, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-102763
... Abstract Investigation on leakage flow and heat transfer characteristics in the bristle pack attaches significant importance to performance enhancement of brush seals. The experimental leakage flow rates were obtained for brush seals with two alternative backing plate configurations at pressure...
Proceedings Papers
Proc. ASME. GT2023, Volume 7B: Heat Transfer — General Interest/Additive Manufacturing Impacts on Heat Transfer; Internal Air Systems; Internal Cooling, V07BT14A021, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103791
... Abstract Labyrinth seals are vital for leakage control of gas turbine engines. Over the years, several analytical models have been developed to estimate leakage flow amounts through the labyrinth seals for different seal geometries and operating conditions. This paper presents and covers...
Proceedings Papers
Proc. ASME. GT2023, Volume 13B: Turbomachinery — Axial Flow Turbine Aerodynamics, V13BT30A001, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-100621
... Abstract Turbine blade tip leakage flows occur between the unshrouded rotor and stationary casing. Such flow is one of the main sources of aerodynamic loss in a turbine. Many different methods have been proposed to reduce this loss, including the squealer tip and winglet design. In this study...
Proceedings Papers
Proc. ASME. GT2021, Volume 2A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V02AT31A027, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59182
... the passage flow where it leads to a reduced turbulence level and total pressure loss in the leakage flow region. In summary, the paper demonstrates the influence of penny platform tilting on cavity flow and passage flow and provides new insights into the mechanisms of penny cavity-associated losses...
Proceedings Papers
Proc. ASME. GT2021, Volume 2A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V02AT31A041, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-60103
... wells and how compressor operating range [1]. Typically, shrouded stators the cavity wells affect the leakage flow, there is a lack of wholistic provide additional mechanical stability compared to cantilevered knowledge of how these flow parameters are interdependent. To stators. shed light...
Proceedings Papers
Proc. ASME. GT2021, Volume 5A: Heat Transfer — Combustors; Film Cooling, V05AT12A003, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-58889
...-pressure turbine shroud were revealed. It is found that the film cooling characteristics of the turbine shroud present an unsteady and periodic phenomenon. The blade tip clearance leakage flow, leakage vortex and mainstream suppression have important effects on the film cooling performance of the high...
Proceedings Papers
Proc. ASME. GT2020, Volume 7B: Heat Transfer, V07BT12A054, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15567
... Abstract In the vicinity of gas turbine blades, a complex flow field is formed due to the flow separation, reattachment, and secondary flows, and results in locally non-uniform and high heat transfer on the surfaces. In this study, the effects of leakage flow through the slot between gas...
Proceedings Papers
Proc. ASME. GT2012, Volume 4: Heat Transfer, Parts A and B, 1389-1396, June 11–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: GT2012-68563
... span) model had no difference from that for the 100% span (whole span) model obviously. However, the leakage flow for the 10% span model showed larger interaction with the passage flow. With different spans, the effect of different blowing ratios, i.e., M = 0.4, 0.8 and 1.2, was investigated...
Proceedings Papers
Proc. ASME. GT2011, Volume 5: Heat Transfer, Parts A and B, 345-352, June 6–10, 2011
Publisher: American Society of Mechanical Engineers
Paper No: GT2011-45693
... 07 05 2012 Three-dimensional simulations of squealer tip on GE-E3 blade with eight film cooling holes were numerically studied. The effect of the rim width and the blowing ratio on the blade tip flow was revealed. Numerical simulations were performed to predict the leakage flow...
Proceedings Papers
Proc. ASME. GT2011, Volume 5: Heat Transfer, Parts A and B, 1769-1780, June 6–10, 2011
Publisher: American Society of Mechanical Engineers
Paper No: GT2011-46700
... temperature fields are made for this purpose. In addition to documenting endwall contouring effects, a range of disc cavity leakage flow rates is investigated. This information is meant to quantify, over the range tested, the benefits and penalties of introducing leakage flow into the passage using...
Proceedings Papers
Proc. ASME. GT2010, Volume 4: Heat Transfer, Parts A and B, 1437-1445, June 14–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: GT2010-22382
... 11 01 2011 Three-dimensional simulations of squealer tip on GE-E3 blade with eight film cooling holes were numerically studied. Numerical simulations were performed to predict the leakage flow and the tip heat transfer in the tip-gap region with the κ-ε model. For the squealer tip...