Modeling and Simulating of Flow Field for Aircraft Wake Vortex

The wake vortex induced by the leading aircraft usually brings the dangerous state to the following aircraft such as incline,rolling,or stall.Based on the anglicizing of mechanism of wake vortex,the decaying and movement models are developed in this paper.In addition,using the methods of image vortex and considering the influence of ground effects,the paper determins the degree of influence by the increasing of space between the vortexes,which is suitable for anglicizing the influences of ground effects.With these models and methods,the filed of wake vortex is simulated and calculated,the results are similar to what calculated by the Large Eddy Simulation models and measured by the lidars.With the advantage of simple form,high speed,the proposed models can be used in the study of wake vortex safety spacing system of airport.