[A-CG45] Promotion of climate and earth system sciences using manned/unmanned aircrafts

[ACG45-03] Evaluating the Impact of Airport Structures on Wake Vortex Behavior under Realistic Wind Conditions at Tokyo/Haneda

Takashi Misaka¹, Ryoichi Yoshimura², Shigeru Obayashi³, *Ryota Kikuchi^2,4 (1.National Institute of Advanced Industrial Science and Technology , 2.Nagoya University, 3.Tohoku University, 4.DoerResearch, Inc.)

Keywords:Large Eddy Simulation, Aviation Weather, Wake Turbulence

Incorporating meteorological insights, this study embarks on a detailed investigation of wake vortex behavior in the unique aerodynamic environment of airports, with a spotlight on Tokyo/Haneda International Airport. Utilizing the advanced methodology of Large-Eddy Simulation (LES), this research probes the interaction between wake vortices generated by aircraft during landing and the complex wind patterns influenced by airport infrastructure, specifically hangar buildings.

We combine an LES code and the Weather Research and Forecasting numerical weather prediction model to retrieve realistic wind conditions around the airport. The behavior of wake vortices is then investigated in the retrieved wind field using the adaptive mesh capability of the LES code for capturing the tiny vortex core of the wake vortex. At the crosswind on the order of a vortex descent speed, the hangar wake reduces the crosswind near the runway, enhancing the windward vortex’s rebound. The effect is alleviated by doubling the crosswind to twice the vortex descent speed. On the other hand, the wind fluctuations caused by the hangar buildings only slightly affect the wake vortex decay.