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

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

Content Provider	MDPI
Author	Lamidel, David Daviller, Guillaume Roger, Michel Posson, Hélène
Copyright Year	2021
Description	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 × 10 $5$ . 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.
Starting Page	27
e-ISSN	2504186X
DOI	10.3390/ijtpp6030027
Journal	International Journal of Turbomachinery, Propulsion and Power
Issue Number	3
Volume Number	6
Language	English
Publisher	MDPI
Publisher Date	2021-07-13
Access Restriction	Open
Subject Keyword	International Journal of Turbomachinery, Propulsion and Power Aerospace Engineering Large-eddy Simulation Fan Noise Tip Leakage Flow Tip Clearance Noise
Content Type	Text
Resource Type	Article

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