Results 21 to 30 of about 845 (119)
Aerothermal Effect of Cavity Welding Beads on a Transonic Squealer Tip
Journal of Turbomachinery, 2020 Abstract High-pressure turbine blade tips are critical for gas turbine performance and are sensitive to small geometric variations. For this reason, it is increasingly important for experiments and simulations to consider real geometry features.
Vieira, J +3 more
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Effect of Squealer Tip on Rotor Heat Transfer and Efficiency [PDF]
Volume 3: Heat Transfer; Electric Power; Industrial and Cogeneration, 1997 Calculations were performed to simulate the tip flow and heat transfer on the GE-E3 first stage turbine, which represents a modern gas turbine blade geometry. Cases considered were a smooth tip, 2% recess, and 3% recess. In addition a two-dimensional cavity problem was calculated.
A. A. Ameri +2 more
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On scaling method to investigate high-speed over-tip-leakage flow at low-speed condition [PDF]
, 2017 Modern high-pressure turbine blades operate at high-speed conditions. The over-tipleakage (OTL) flow can be high-subsonic or even transonic. From the consideration of problem simplification and cost reduction, the OTL flow has been studied extensively in
He, L., Jiang, H., Wang, L., Zhang, Q.
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Desensitization of Tip Clearance Effects in Axial Flow Turbines
Journal of Fluid Science and Technology, 2010 The present study aims to control the leakage flow and total pressure loss in high pressure turbines. A new tip shape is proposed. It is based on the triple squealer shape by adopting a new middle squealer, along the camber line, whose first and last ...
Mohamed EL-GHANDOUR +2 more
doaj +1 more source
International Journal of Turbomachinery, Propulsion and Power, 2019 The present research focused on the analysis of the leakage flows developing from advanced blade tip geometries. The aerodynamic field of a contoured blade tip and of a high-performance rimmed blade were investigated against a baseline squealer rotor ...
Bogdan C. Cernat, Sergio Lavagnoli
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Turbine blade tip cooling and heat transfer [PDF]
, 2004 Turbine blade tip leakage flow from blade pressure side to suction side over the tip surface increases the thermal loading to the blade tip, leading to a high local temperature and thus, is considered one of the primary sources of blade failure.
Nasir, Hasan
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AerospaceThis study deals with the effectiveness of casing-injection for a few squealer tip designs in a turbine stage to mitigate tip leakage penalties. Seventy-two Unsteady Reynolds-Averaged Navier–Stokes (URANS) simulations were conducted.
Nasser Can Kasımbeyoğlu +2 more
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Turbine Blade Tip External Cooling Technologies
Aerospace, 2018 This article provides an overview of gas turbine blade tip external cooling technologies. It is not the intention to comprehensively review all the publications from past to present.
Song Xue, Wing F. Ng
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Multi-Disciplinary Design Optimisation of the Cooled Squealer Tip for High Pressure Turbines
Aerospace, 2018 The turbine tip geometry can significantly alter the performance of the turbine stage; its design represents a challenge for a variety of reasons. Multiple disciplines are involved in its design and their requirements limit the creativity of the designer.
Stefano Caloni +2 more
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Advances in Mechanical Engineering, 2015 In this article, the effects of film cooling holes arrangement and groove depth on the heat transfer and film cooling performance of blade tip are investigated.
Fujuan Tong +5 more
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