Results 1 to 10 of about 845 (119)
Inclined Slot Cooling of the Pressure Side Rims of Squealer Tips [PDF]
Proceedings of Global Power & Propulsion Society, 2022 The blade tip is a particularly critical component of the high pressure turbine because the hot gas leaking over it causes a loss of efficiency and degrades the blade. This tip degradation is often a limiting factor of engine life. Squealer designs tend to have high efficiency, but the pressure side rims are particularly vulnerable due to their large ...
Vieira, JAC, Coull, J, Ireland, P
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Three-dimensional optimization of squealer-tip for a transonic axial-flow compressor rotor blade
Heliyon, 2023 This research represents an innovative method for geometry generation of the squealer-tip in axial compressor rotors and its exploit in a numerical optimization process to obtain a better stage performance.
Mojtaba Heidarian Shahri +2 more
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Effects of casing motion on tip leakage flow and film-cooling effectiveness of squealer tips
Journal of Thermal Science and Technology, 2017 A comparative investigation of leakage flow and film-cooling characteristics on different squealer tips is conducted under the conditions of stationary and moving casing. Firstly, the numerical method used in the calculations has been verified. Then, the
Fengna CHENG +3 more
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Film cooling characteristics of squealer tip of a turbine blade
Xibei Gongye Daxue XuebaoThe high-speed and high-temperature gap leakage flow in the turbine blade tip clearance directly scours the tip of the rotor blade and generates a local high-temperature region, so the active and passive control of the gap leakage flow is very important.
WU Fangfang +4 more
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The axial tip clearance leakage analysis of the squealer blade tip for the liquid-ring pump
Scientific ReportsThe gas-liquid two phase leakage flow in the clearance of Liquid ring pump has severe negative impact on its hydraulic performance. In order to analyze the flow structure of leakage flow and suppress it, the squealer blade tip was introduced to Liquid ...
Xiaoxiao Wei +4 more
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Implementation of cooling slots at the pressure side rims of squealer tips [PDF]
Journal of the Global Power and Propulsion SocietyThe blade tip is a particularly critical component of the high pressure turbine due to the hot overtip leakage gas being responsible for efficiency losses and thermal degradation, often limiting engine life. Squealer tip designs reduce the over-tip leakage mass flow, increasing efficiency, but the thin pressure side rims can be vulnerable to damage ...
Vieira, JAC, Coull, J, Ireland, P
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A novel approach for suppressing leakage flow through turbine blade tip gaps
Propulsion and Power Research, 2022 Tip clearance leakage flow of the turbine bade is an important factor limiting the augment of the high pressure turbine efficiency, which should be suppressed utilizing certain methods.
Tianyi Wang, Yimin Xuan
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Effect of Mainstream Velocity on the Heat Transfer Coefficient of Gas Turbine Blade Tips
Energies, 2021 This study experimentally investigated the effects of cascade inlet velocity on the distribution and the level of the heat transfer coefficient on a gas turbine blade tip.
Jin Young Jeong +4 more
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Energies, 2022 Cavity width and height are two key geometric parameters of squealer tips, which could affect the control effect of squealer tips on tip leakage flow (TLF) of gas turbines.
Yufan Wang +4 more
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Aerospace, 2022 In high-pressure turbines, there is a large difference in temperature between the mainstream and the turbine blade surface. Most of the turbine blade tip heat transfer studies were conducted under the assumption that the Over-Tip-Leakage (OTL) flow field
Dongjie Yan +6 more
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