Effects of Tip Cavity Depth, Width, and Location on the Leakage Flow in an Axial Turbine Cascade
Journal of Fluid Science and Technology, 2010 In this study, effects of the tip cavity with various depths, widths, and locations on the leakage flow and performance of an axial turbine cascade have been investigated numerically.
Mohamed EL-GHANDOUR +3 more
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Film cooling effects on the tip flow characteristics of a gas turbine blade
Propulsion and Power Research, 2015 An experimental investigation of the tip flow characteristics between a gas turbine blade tip and the shroud was conducted by a pressure-test system and a particle image velocimetry (PIV) system.
Jin Wang +3 more
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Effect of Relative Movement between the Shroud and Blade on Tip Leakage Flow Characteristics
Energies, 2017 An experimental and numerical investigation into the tip leakage flow of a turbine rotor is carried out using a particle image velocimetry (PIV) system and the commercial software ANSYS CFX 14.0.
Xiaochun Wang +3 more
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International Journal of Turbomachinery, Propulsion and Power, 2019 Rotor tip film cooling is investigated at the Large Scale Turbine Rig, which is a 1.5-stage axial turbine rig operating at low speeds. Using pressure sensitive paint, the film cooling effectiveness η at a squealer-type blade tip with ...
Manuel Wilhelm, Heinz-Peter Schiffer
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Investigations of surface film cooling characteristics along the trailing edge of the tip of a transonic turbine blade [PDF]
, 2022 The present study investigates film cooling in the trailing edge region of a transonic turbine blade tip, employing five rectangular film cooling holes downstream of a squealer recess.
Cox, Matthew
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Advances in the Aerothermal Performance Enhancement of Turbine Blade Tip Configurations
EnergiesA clearance necessarily exists between the blade tip and the casing in turbines. A leakage flow, formed by the accelerated gas through the tip clearance, is a major cause of turbine stage efficiency loss.
Bin Wu +4 more
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Uncertainty quantification of leakages in a multistage simulation and comparison with experiments [PDF]
, 2016 The present paper presents a numerical study of the impact of tip gap uncertainties in a multistage turbine. It is well known that the rotor gap can change the gas turbine efficiency but the impact of the random variation of the clearance height has not ...
Ahlfeld, R +3 more
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A Coandă-Surface-Assisted Ejector as a Turbine Tip Leakage Mitigator
International Journal of Turbomachinery, Propulsion and PowerThis paper presents an experimental and computational investigation of novel, ejector-based, Coandă-surface-assisted tip leakage mitigation schemes.
Gohar T. Khokhar, Cengiz Camci
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Heat Transfer and Film Cooling on a Gas Turbine Blade and Shroud [PDF]
, 2015 At a fixed pressure ratio, the thermodynamic efficiency and net power output of a gas turbine engine increases with an increase in the turbine inlet temperature. Cooling is necessary because of the thermal limits of the engine materials.
Tamunobere, Onieluan
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Engine cyclic durability by analysis and material testing [PDF]
The problem of calculating turbine engine component durability is addressed. Nonlinear, finite-element structural analyses, cyclic constitutive behavior models, and an advanced creep-fatigue life prediction method called strainrange partitioning were ...
Halford, G. R., Kaufman, A.
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