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Article Dans Une Revue AIAA Journal Année : 2017

Wind-Tunnel and CFD Investigations Focused on Transition and Performance Predictions of Laminar Wings

Résumé

This article is a continuation of the paper recently published by Hue et al. which was dedicated to transition and drag predictions of laminar airfoils. The extension of such studies to three-dimensional configurations representative of modern civil aircraft is a step further towards the implementation of natural laminar flow technologies. The present work has therefore been focused on the laminar design validation of a business jet low sweep wing. In 2015, an experimental campaign was carried out in the European Transonic Wind tunnel; it included laminar/turbulent transition measurements with Temperature Sensitive Paint at Mach and Reynolds numbers corresponding to cruise flight conditions. Afterwards, fluid dynamics computations have been performed on this aircraft geometry either with a Reynolds-averaged Navier-Stokes solver based on Tollmien-Schlichting and Cross-Flow criteria or with a boundary-layer code using Database methods for transition location as well as exact stability analyses. For three specific cases exhibiting different angles of attack, experimental and numerical transition predictions are compared. The agreement that is achieved is satisfactory and extended laminar zones are observed on the wing at cruise lift levels. In these conditions, the drag reduction can represent 10 to 15% of the aircraft drag.

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Dates et versions

hal-01727710 , version 1 (10-10-2018)

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David Hue, Olivier Vermeersch, Jérémy Duchemin, Olivier Colin, Dac Tran. Wind-Tunnel and CFD Investigations Focused on Transition and Performance Predictions of Laminar Wings. AIAA Journal, 2017, 56 (1), pp.132-145. ⟨10.2514/1.J056088⟩. ⟨hal-01727710⟩
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