Numerical Study of the Effect of Jet Airflow on the Dissipation of Aircraft Wake Vortices
JIANG Yanqiang
WANG Rundong
PAN Weijun
ZHANG Chen
ZHANG Yuqin
Abstract：In order to improve the efficiency of airport operation and shorten the wake vortex separation,methods to accelerate the rapid dissipation of aircraft wake vortices are explored.ANSYS simulation is used to simulate the dissipation of A330 aircraft wake vortex under jet airflow environment.The A320 is selected as the aircraft that encounters the wake vortex,and the aerodynam-ic response under jet conditions is analyzed using the strip method.The safe separation after accelerated wake vortex dissipation is also compared with the ICAO RECAT standard to explore the efficiency of wake separation reduction.The results show that the jet airflow can promote the diffusion of vortex volume,inhibit the sinking speed and secondary pop-up of the wake vortex,accelerate the aircraft wake dissipation,and promote the reduction of the vertical velocity of the wake vortex field.It reduces the danger of air-craft wake encounter and shrinks the minimum wake separation between the front and rear aircraft.However,the jet airflow pro-motes the increase of the tail vortex core spacing,which is unfavorable to the implementation of the paired approach(PA)proce-dures for Closely Spaced Parallel Runways(CSPR).
Keywords：wake vortex dissipationwake separationjet airflowANSYS software
Publication Date：2025-03-20
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 93-96,108 )