水滴高速撞击风力机叶片的SPH-FEM耦合计算

周文平; 杨茂立; 马桂兰

doi:10.19912/j.0254-0096.tynxb.2022-1120

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太阳能学报 ›› 2023, Vol. 44 ›› Issue (11) : 303-309. DOI: 10.19912/j.0254-0096.tynxb.2022-1120

水滴高速撞击风力机叶片的SPH-FEM耦合计算

周文平¹, 杨茂立¹, 马桂兰²

作者信息 +

SPH-FEM COUPLING CALCULATION OF WATER DROPLETS IMPACT ON WIND TURBINE BLADES AT HIGH VELOCITY

Zhou Wenping¹, Yang Maoli¹, Ma Guilan²

Author information +

文章历史 +

摘要

基于SPH-FEM耦合方法,对水滴高速撞击叶片涂层表面后的动态过程及材料冲击响应进行计算。结果表明：水滴撞击后会出现两次接触力峰值,第一次是由水滴被压缩后形成的高压导致的,会在涂层表面形成较高的应力,但造成材料的塑性变形较小;第二次是由水滴内部的高压释放引起的横向扩散导致的,会在涂层表面造成较大的塑性变形,是导致叶片前缘损伤的主要因素;水滴速度的增加或涂层厚度的减小会导致更大的接触力,同时在涂层表面产生更大的塑性变形区域以及塑性应变。

Abstract

The present paper develops an SPH-FEM coupling computational model for simulating water droplet impact on wind turbine blades. Further, the dynamic process and material impact response of water droplets impact on the coating surface at high velocity are calculated. The results show that there are two contact force peaks after the impact of the water droplets. The first peak is caused by the high pressure formed when the water droplet is compressed, which will form high stresses on the coating surface, but the effective plastic strain is not significant. The second peak is the lateral diffusion caused by the release of high pressure inside the water droplet, which will cause a large plastic deformation on the coating surface and become the main factor of blade leading edge damage. The increase in water droplet velocity or decrease in the coating material thickness leads to a larger contact force, with a larger area of plastic deformation and plastic strain on the coating surface.

导出引用

周文平, 杨茂立, 马桂兰. 水滴高速撞击风力机叶片的SPH-FEM耦合计算[J]. 太阳能学报. 2023, 44(11): 303-309 https://doi.org/10.19912/j.0254-0096.tynxb.2022-1120

Zhou Wenping, Yang Maoli, Ma Guilan. SPH-FEM COUPLING CALCULATION OF WATER DROPLETS IMPACT ON WIND TURBINE BLADES AT HIGH VELOCITY[J]. Acta Energiae Solaris Sinica. 2023, 44(11): 303-309 https://doi.org/10.19912/j.0254-0096.tynxb.2022-1120

中图分类号： TK83

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