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Simulation of helicopter ditching using smoothed particle hydrodynamics

机译:利用平滑粒子流体动力学模拟直升机开沟

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This paper explores the potential use of smoothed particle hydrodynamics methods for helicopter ditching. The method appears suitable for this task since it is mesh-free and can accommodate the interaction between a floating object and the free-surface of water. Simple cases of objects dropped on water were first studied to establish confidence on the method, and quantify the effect of the numerical parameters of SPH including the boundary condition between the water and solid, the effect of the number and type of smoothed particles as well as the generation of different sea-states for the ditching. Once confidence on the method was established, experiments for the ditching of a model-scale helicopter were used for validation. The smoothed particle hydrodynamics method provides good agreement with experiential data for the position and velocity of the helicopter fuselage. (C) 2018 Elsevier Masson SAS. All rights reserved.
机译:本文探讨了平滑粒子流体动力学方法在直升机降落中的潜在用途。该方法似乎适合该任务,因为它没有网格并且可以容纳浮动物体和水的自由表面之间的相互作用。首先研究了将物体掉到水上的简单情况,以建立对该方法的置信度,并量化SPH数值参数的影响,包括水与固体之间的边界条件,光滑颗粒的数量和类型的影响以及沟渠产生了不同的海洋状态。一旦确定了该方法的可信度,就可以使用模型直升机的降沟实验进行验证。平滑粒子流体动力学方法与直升机机身的位置和速度的经验数据非常吻合。 (C)2018 Elsevier Masson SAS。版权所有。

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