Numerical simulations of complex water spray flows around aircraft landing tire

Abstract

When an aircraft passes through the contaminated runway, the water spray generated by the landing gear may enter the inlet of the engine and affect the operation of the engine. In this paper, the formation of tire spray and the complete splashing trajectory under a complex flow field are calculated by numerical simulations. Firstly, the initial patterns of tire water spray are simulated by the Smoothed Particle Hydrodynamics (SPH)-Finite Element (FE) coupling method in LS-DYNA software package, and the engine flow field is simulated in CFX software package. Secondly, the water spray particles information and engine flow field information are imported into a program to calculate the splashing trajectory under the influence of the complex flow field. In the process, the particles inhaled by the engine are counted, so the engine water inflow can be obtained under different working conditions and tire configurations, which can verify the suppression effect of the tire chine on the engine water inflow. Lastly, the complete splashing trajectory of the complex flow field simulated by the program is consistent with the result of the aircraft splash test, which proves the feasibility of the numerical simulation method for the complete splashing trajectory simulation.