摘要
针对水滴撞击飞机表面时互相干扰,形成水滴铺展、回弹等动力学行为,使飞机结冰机理更加复杂的问题,对不同条件下水滴撞击壁面的影响特性展开研究。通过实验与数值模拟相结合的方法研究了水滴直径、壁面温度、壁面材料以及初始速度等条件与水滴的铺展和回弹过程之间的关系,并得到铺展系数与各影响参数之间的关联式。研究结果显示:增大水滴直径对最大铺展具有促进作用;壁面温度越大对水滴铺展越有利,但壁面温度过低时,会导致水滴底部冻结,铺展和回弹受限制;壁面材料为有机玻璃,对铺展最有利;水滴初始速度越大越有利于水滴铺展。
Aiming at the problem that water droplets interfere with each other when they impact aircraft surface, resulting in dynamic behaviors such as spreading and rebound of water droplets, which makes aircraft icing mechanism more complicated. Therefore, in this paper, the influence characteristics of water droplets hitting the wall under different conditions are studied. The relationship between the droplet diameter, the wall temperature, the wall material, the initial velocity and the droplet spreading and springback process is studied by combining experimental and numerical methods, and the correlation formula between the spreading coefficient and the influential parameters is obtained. The results show that increasing droplet diameter can promote the maximum spread. The higher the wall temperature is, the more favorable the droplet spreading is. However, when the wall temperature is relatively low, the droplet bottom freezes while the spreading and rebound are restricted. It is also shown that the wall material is plexiglass, which is the most favorable for spreading, and that the larger the initial droplet velocity is, the better the droplet spreading is.
作者
孙金绢
马志恒
邵朝腾
田建辉
SUN Jinjuan;MA Zhiheng;SHAO Zhaoteng;TIAN Jianhui(School of Mechatronic Engineering,Xi’an Technological University,Xi’an,Shanxi 710021,China;School of Civil Engineering and Architecture,Xi’an University of Technology,Xi’an,Shanxi 710048)
出处
《河北工程大学学报（自然科学版）》
CAS
2022年第3期99-106,共8页
Journal of Hebei University of Engineering:Natural Science Edition
基金
陕西省自然科学基础研究计划一般项目(2021JQ-650)
陕西省教育厅科研计划项目(19JK0412)。
关键词
水滴撞击
水滴铺展
动力学特性
数值模拟
铺展系数
water drop impact
water drops spread out
dynamic characteristics
numerical simulation
spreading coefficient
