Numerical simulation of aircraft wake vortex under different B V frequencies

DOI:	10.11809/bqzbgcxb2024.02.025
Keywords:	A333; B V frequency; atmospheric stratification; wake vortex evolution; numerical simulation
Abstract:	To ensure the operational safety of civil aircraft and to investigate the effect of atmospheric stratification on aircraft wake vortex, the wake vortex evolution under different B V frequency and different initial temperature conditions is investigated. The SST k ω turbulence model is selected and the wake vortex evolution of A333 aircraft under nine atmospheric environments built by custom functions is simulated numerically using ANSYS software. Furthermore, the simulated wake vortex velocity distribution is compared with the radar detection results for verification. The results show that the different initial temperatures mainly cause the different initial intensity of the wake vortex but have less influence on the wake vortex development. The increase of B V frequency will promote the decay of vortex intensity, suppress the sinking of vortex, and gradually change the increasing trend of vortex nucleus spacing to decrease. A larger B V frequency induces small scale secondary vortices above the wake vortex and accelerates the wake vortex decay.
Published:	2024-02-28
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