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Aerodynamic simulation strategies assessment for a Fenestron® in hover flight

Marino, Morgane and Gourdain, Nicolas and Legras, Guillaume and Alfano, Davide Aerodynamic simulation strategies assessment for a Fenestron® in hover flight. (2015) In: 6th European conference for aeronautics and space sciences (EUCASS), 29 June 2015 - 3 July 2015 (Kraków, Poland). (Unpublished)

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Abstract

The Fenestron® has a crucial anti-torque function and its sizing is a key point of the Helicopter design, especially regarding thrust and power predictions. This paper reports the investigations done on a full scale Dauphin Fenestron®. The objectives are first to evaluate the influence of some numerical parameters on the performance of the Fenestron®. Then the flow is analyzed for a high incidence pitche, for which the rotor blade can experience massive boundary layer separations. Simulations are carried out on a single blade passage model. Several parameters are benched, such as grid quality, numerical schemes and turbulence modeling. A comparison with test bench measurements is carried out to evaluate the capability of the numerical simulations to predict both global performance (thrust and power) and local flows (static pressure at the shroud and radial profiles inside the vein). The analysis demonstrates the capability of numerical simulations to accurately estimate the global performance of the Fenestron®, including at high pitch angles. However, some discrepancies remain on the local flow, especially in the vicinity of the rotor shroud. A more detailed analysis of the local flow is performed at a blade pitch angle of 35°, with a particular interest for the blade tip region.

Item Type:Conference or Workshop Item (Paper)
HAL Id:hal-01446004
Audience (journal):International peer-reviewed journal
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:Other partners > Airbus (FRANCE)
French research institutions > Centre National d'Études Spatiales - CNES (FRANCE)
Other partners > EDF (FRANCE)
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
French research institutions > Office National d'Etudes et Recherches Aérospatiales - ONERA (FRANCE)
Other partners > Total (FRANCE)
Other partners > Météo France (FRANCE)
Other partners > SAFRAN (FRANCE)
Laboratory name:
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Deposited By: Nicolas GOURDAIN
Deposited On:25 Jan 2017 14:10

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