飞机轮胎溅水鸡尾流特性数值模拟

doi:10.7527/S1000-6893.2019.22996

Abstract

Abstract: When the tires of the landing gear of the plane pass through the contaminated runway, they will create not only lateral water splashing, but also water splashing similar to the tail of the rooster, which is caused by the convergence of water between multiple wheels. This water spray is called cock-tail flow. Compared with the lateral splashing of tire, the formation of cock-tail flow is complicated. The amount of water is larger and the height of splash is higher than lateral splashing, which may cause more serious harm to the safety of aircraft structure. In this paper, numerical analysis is used to study the formation mechanism of the cock-tail flow caused by the main aircraft tires. Based on the geometrical characteristics of the aircraft tire, a model for the slashing water of aircraft tire is established, in which the tire and runway are simulated by the FEM method and the water is simulated by the Smoothed Particle Hydrodynamics (SPH) method. The shape and velocity distribution of cock-tail flow are presented, revealing the formation mechanism of cock-tail flow water splashing. The effects of water depth, tire spacing, and speed of tire on the shape and velocity distribution of cock-tail flow are studied. Results preliminarily verified that the ESDU engineering algorithm can be used as a reference for describing the shape of cock-tail flow in flangeless tire.

Key words: splash of multi-wheel, cock-tail flow, SPH method, shape and velocity distribution, flangeless tire

CLC Number:

V226⁺.8

GUAN Xiangshan, XU Fei, REN Xuanqi, ZHANG Xianpeng. Numerical simulation of cock-tail water spray flow generated by aircraft tire[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2019, 40(11): 122996-122996.

References 20

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Numerical simulation of cock-tail water spray flow generated by aircraft tire

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