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Article

Numerical Prediction of the Aerodynamics and Acoustics of a Tip Leakage Flow Using Large-Eddy Simulation

1
Ecole Centrale de Lyon, Universite de Lyon, CNRS, Universite Claude Bernard Lyon 1, INSA Lyon, LMFA, UMR 5509, 69130 Ecully, France
2
CFD Team, CERFACS, 31057 Toulouse, France
3
Safran Aircraft Engines, 77550 Moissy Cramayel, France
*
Author to whom correspondence should be addressed.
This paper is an extended version of our paper published in the Proceedings of the 14th European Turbomachinery Conference, Gdansk, Poland, 12–16 April 2021.
Academic Editor: Raúl Vázquez Díaz
Int. J. Turbomach. Propuls. Power 2021, 6(3), 27; https://doi.org/10.3390/ijtpp6030027
Received: 1 June 2021 / Revised: 28 June 2021 / Accepted: 6 July 2021 / Published: 13 July 2021
A Large-Eddy Simulation of the tip leakage flow of a single airfoil is carried out. The configuration consists of a non-rotating, isolated airfoil between two horizontal plates with a gap of 10 mm between the tip of the airfoil and the lower plate. The Mach number of the incoming flow is 0.2, and the Reynolds number based on the chord is 9.3 × 105. The objective of the present study is to investigate the best way to compute both the aerodynamics and acoustics of the tip leakage flow. In particular, the importance of the inflow conditions on the prediction of the tip leakage vortex and the airfoil loading is underlined. On the other hand, the complex structure of the tip leakage vortex and its convection along the airfoil was recovered due to the use of a mesh adaptation based on the dissipation of the kinetic energy. Finally, the ability of the wall law to model the flow in the tip leakage flow region was proven in terms of wall pressure fluctuations and acoustics in the far-field. View Full-Text
Keywords: large-eddy simulation; fan noise; tip leakage flow; tip clearance noise large-eddy simulation; fan noise; tip leakage flow; tip clearance noise
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MDPI and ACS Style

Lamidel, D.; Daviller, G.; Roger, M.; Posson, H. Numerical Prediction of the Aerodynamics and Acoustics of a Tip Leakage Flow Using Large-Eddy Simulation. Int. J. Turbomach. Propuls. Power 2021, 6, 27. https://doi.org/10.3390/ijtpp6030027

AMA Style

Lamidel D, Daviller G, Roger M, Posson H. Numerical Prediction of the Aerodynamics and Acoustics of a Tip Leakage Flow Using Large-Eddy Simulation. International Journal of Turbomachinery, Propulsion and Power. 2021; 6(3):27. https://doi.org/10.3390/ijtpp6030027

Chicago/Turabian Style

Lamidel, David, Guillaume Daviller, Michel Roger, and Hélène Posson. 2021. "Numerical Prediction of the Aerodynamics and Acoustics of a Tip Leakage Flow Using Large-Eddy Simulation" International Journal of Turbomachinery, Propulsion and Power 6, no. 3: 27. https://doi.org/10.3390/ijtpp6030027

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