[Prédiction de l'évolution des tourbillons de sillage d'avions dans le champ proche]
Le développement d'un sillage tourbillonnaire dans le champ proche d'un avion ( jusqu'à 20 envergures) est étudié expérimentalement et numériquement. L'approche numérique est basée sur la résolution des équations de Navier–Stokes moyennées au sens de Reynolds, auxquelles on adjoint un modèle de turbulence à une équation de transport. On montre ainsi que les effets de turbulence jouent un rôle primordial sur la dynamique du sillage dans le champ proche. Les résultats numériques sont en très bon accord avec les résultats expérimentaux, jusqu'à environ 10 envergures. Les résultats montrent que les lois de charge typiques d'un avion commercial en configuration d'atterrissage peuvent aboutir, à des distances de quinze à vingt envergures, à des configurations tourbillonnaires très diverses, comportant un seul ou plusieurs dipôles.
The near-field (up to about 20 spans) development of trailing vortices is investigated experimentally and numerically. Computational Fluid Dynamics (CFD) results are based on the solution of quasi-3D Reynolds-averaged Navier–Stokes equations with a one-equation turbulence model. The inclusion of turbulence effects is found to be essential to capturing the correct near-field development. The CFD results are shown to be in very good agreement with experimental wake-survey results out to ten spans. Results show that wing loadings typical of commercial airplanes in a landing configuration can lead to multiple, or single vortex pairs, at distances of fifteen to twenty spans downstream.
Mot clés : CFD, RANS, Turbulence, Tourbillons, Fusion de tourbillons, Mesures
@article{CRPHYS_2005__6_4-5_451_0,
author = {Michael Czech and Gregory Miller and Jeffrey Crouch and Michail Strelets},
title = {Predicting the near-field evolution of airplane trailing vortices},
journal = {Comptes Rendus. Physique},
pages = {451--466},
publisher = {Elsevier},
volume = {6},
number = {4-5},
year = {2005},
doi = {10.1016/j.crhy.2005.05.005},
language = {en},
}
TY - JOUR AU - Michael Czech AU - Gregory Miller AU - Jeffrey Crouch AU - Michail Strelets TI - Predicting the near-field evolution of airplane trailing vortices JO - Comptes Rendus. Physique PY - 2005 SP - 451 EP - 466 VL - 6 IS - 4-5 PB - Elsevier DO - 10.1016/j.crhy.2005.05.005 LA - en ID - CRPHYS_2005__6_4-5_451_0 ER -
Michael Czech; Gregory Miller; Jeffrey Crouch; Michail Strelets. Predicting the near-field evolution of airplane trailing vortices. Comptes Rendus. Physique, Volume 6 (2005) no. 4-5, pp. 451-466. doi : 10.1016/j.crhy.2005.05.005. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2005.05.005/
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