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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2022, Vol. 43 ›› Issue (5): 125043-125043.doi: 10.7527/S1000-6893.2021.25043

• Fluid Mechanics and Flight Mechanics • Previous Articles     Next Articles

Numerical simulation on near-field evolution of wake vortices of ARJ21 plane with crosswind

ZHANG Junduo1, ZUO Qinghai2, LIN Mengda1, HUANG Weixi1, PAN Weijun2, CUI Guixiang1   

  1. 1. School of Aerospace Engineering, Tsinghua University, Beijing 100084, China;
    2. Civil Aviation Flight University of China, Guanghan 618307, China
  • Received:2020-12-03 Revised:2021-03-12 Published:2022-06-01
  • Supported by:
    Civil Aviation Joint Fund of NSFC (U1733203); Civil Aviation Safety Capacity Building Project (TM 2019-16-1/3)

Abstract: Wake separation is crucial to the security of aircraft landing, and is also an important factor of improving airport efficiency. The characteristics of near-field evolution of wake vortices is the foundation of the design of wake separation system. Therefore, it is of great practical significance to investigate the near-field evolution of wake vortices of domestic aircraft. In the present study, the effect of crosswind on the near-field evolution of wake vortices of ARJ21 plane, initialized by the lift-drag model, is analyzed by using the large eddy simulation based on adaptive mesh. The numerical results show that the evolution of the upstream vortex and downstream vortex is asymmetric. The downstream vortex decays more rapidly and translates farther than the upstream vortex, and the wake vortices decay more rapidly as the cross-wind gets stronger. In addition, the security of the following plane after ARJ21 is also analyzed based on the numerical results of the ARJ21 plane. It is found that the heavy plane is not affected by the wake vortices of ARJ21, whereas the medium-sized and light planes require adequate wake separation according to the weather condition.

Key words: ARJ21 plane, wake vortex, near-field evolution, crosswind, large eddy simulation, adaptive mesh

CLC Number: