Numerical Investigation of Airfoil Clocking in a Three-Stage Low Pressure Turbine

Arnone, Andrea; Marconcini, Michele; Pacciani, Roberto; Schipani, Claudia; Spano, Ennio

doi:10.1115/2001-gt-0303

Cited by 8 publications

(6 citation statements)

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“…The numerical results in a three-stage low-pressure turbine of Arnone et al [2] show similar trends as reported by Dorney et al [1]. The effect of full-clocking (clocking of both the rotor and stator blade rows) on the maximal efficiency variation was estimated to be 0.7 per cent.…”

Section: Introductionsupporting

confidence: 79%

Effect of clocking on unsteady rotor blade loading in a low-speed axial compressor at design and off-design operating conditions

Jia

Müller

et al. 2008

Proceedings of the Institution of Mechanical Engineers, Part G:

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This paper presents the results of stator clocking investigations at a design point and an operating point near the stability limit in a low-speed research compressor (LSRC).The unsteady flow field of the LSRC at several clocking configurations was investigated using a three-dimensional unsteady, viscous solver. The unsteady pressure on the rotor blades at midspan (MS) was measured using time-resolving piezoresistive miniature pressure transducers.The effect of clocking on the unsteady pressure fluctuation at MS on the rotor blades is discussed for different operating points.Based on the unsteady profile pressures, the blade pressure forces were calculated. The peakto-peak amplitudes of the unsteady blade pressure forces are presented and analysed for different clocking positions at both the design point and the operating point near the stability limit of the compressor.

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Section: Introductionsupporting

confidence: 79%

Effect of clocking on unsteady rotor blade loading in a low-speed axial compressor at design and off-design operating conditions

Jia

Müller

et al. 2008

Proceedings of the Institution of Mechanical Engineers, Part G:

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“…A number of experimental and numerical studies have been carried out in recent years to investigate these flow phenomena [e.g. Arnone et al 2000Arnone et al , 2002, Eulitz 2000Haldeman et al, 2003;He et al 2002, Howel et al 2001, Huber 1996, Hummel 2002Jouini et al 2003;Reinmoeller et al 2002, Saren et al 2002. The experimental work presented herein is the continuation of our earlier studies, starting from mid-nineties [e.g.…”

Section: Discussionmentioning

confidence: 99%

Unsteady Aerodynamics, Aeroacoustics and Aeroelasticity of Turbomachines

Hall¹,

Kielb²,

Thomas³

2006

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“…Low-pressure turbines behaviour is discussed in detail in [59], where an increase of 0.7% in the efficiency is found by numerical simulations.…”

Section: Cascades Clockingmentioning

confidence: 99%

Stator-Rotor Interaction in Axial Turbine: Flow Physics and Design Perspective

Gaetani¹

2018

Aircraft Technology

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The stator-rotor interaction is an important issue in turbomachinery design when the highest performances are targeted. Different characters mark the interaction process in high-pressure or low-pressure turbines depending both on the blade height and on the Reynolds number. For small blade heights, being the stator secondary flows more important, a more complex interaction is found with respect to the high blades, where the stator blade wake dominates. In low-pressure turbines, the stator wake promotes the transition to turbulent boundary layer, allowing for an efficient application of ultra-high lift blades. First, a detailed discussion of the flow physics is proposed for high-and low-pressure turbines. Some off-design conditions are also commented. Then, a design perspective is given by discussing the effect of the axial gap between the stator and the rotor and by commenting the effects of three-dimensional design on the interaction.

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Numerical Investigation of Airfoil Clocking in a Three-Stage Low Pressure Turbine

Cited by 8 publications

References 0 publications

Effect of clocking on unsteady rotor blade loading in a low-speed axial compressor at design and off-design operating conditions

Effect of clocking on unsteady rotor blade loading in a low-speed axial compressor at design and off-design operating conditions

Unsteady Aerodynamics, Aeroacoustics and Aeroelasticity of Turbomachines

Stator-Rotor Interaction in Axial Turbine: Flow Physics and Design Perspective

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