摘要
The tire spray produced by aircraft running on wet runways may enter the intake of engines,which may lead to the compressor stall,surge,or even combustion flameout.Therefore,it is necessary to do some research work on the tire spray to help to solve this problem.Firstly,the mechanism of tire spray is analyzed,and some parameters are defined to describe the spray pattern.Secondly,the numerical model of tire spray is established by coupled Smoothed Particle Hydrodynamics(SPH)and Finite Element Method(FEM)in LS-DYNA software,and the model is validated by a simplified water spray experiment.Then some influence factors on the spray pattern are studied by numerical simulation.Finally,some suggestions are proposed on different types of aircraft to avoid too much tire spray being ingested into the engine intakes.
The tire spray produced by aircraft running on wet runways may enter the intake of engines,which may lead to the compressor stall,surge,or even combustion flameout.Therefore,it is necessary to do some research work on the tire spray to help to solve this problem.Firstly,the mechanism of tire spray is analyzed,and some parameters are defined to describe the spray pattern.Secondly,the numerical model of tire spray is established by coupled Smoothed Particle Hydrodynamics (SPH) and Finite Element Method (FEM) in LS-DYNA software,and the model is validated by a simplified water spray experiment.Then some influence factors on the spray pattern are studied by numerical simulation.Finally,some suggestions are proposed on different types of aircraft to avoid too much tire spray being ingested into the engine intakes.
基金
supported by the Aeronautical Science Foundation of China(No.2016ZD53038)
the support of the Commercial Aircraft Corporation of China Ltd.
