Simulation of Impact Force of Drop Impacting on Horizontal Plate

doi:10.7652/xjtuxb201309004

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Simulation of Impact Force of Drop Impacting on Horizontal Plate

更新时间：2025-07-09

- Simulation of Impact Force of Drop Impacting on Horizontal Plate
- Vol. 47, Issue 9, Pages: 23-27(2013)
- 作者机构：
  
  西安交通大学能源与动力工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201309004
  CLC： TK05
- Online First：10 September 2013，
  
  Published：2013
- 稿件说明：
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Simulation of Impact Force of Drop Impacting on Horizontal Plate[J]. 2013, 47(9): 23-27.
DOI：

Simulation of Impact Force of Drop Impacting on Horizontal Plate[J]. 2013, 47(9): 23-27. DOI： 10.7652/xjtuxb201309004.

摘要

为探究叶轮机械内部液滴与固壁之间碰撞引起的壁面磨损破坏的机理

采用流体体积方法

数值研究液滴直径、碰撞速度和液滴与壁面之间的接触角对液滴与壁面碰撞的瞬态碰撞力发展变化的影响。研究结果表明

液滴与壁面之间的接触角对液滴碰撞过程中的碰撞力几乎没有影响

但对于不同雷诺数和韦伯数下的液滴

其与静止壁面的碰撞力按液滴直径的2.118次方和速度的1.761次方正则化后

碰撞力的无量纲时间曲线基本重合

且碰撞力峰值出现的无量纲时刻为0.26

即同样直径的液滴

碰撞速度越大

到达碰撞力峰值所用时间越短

对同样速度的液滴

液滴直径越大

则液滴到达碰撞力峰值所用时间越长。

Abstract

In order to understand the mechanism of surface erosion caused by the impact of liquid drops on the blade in the turbomachinery

the effects of contact angle

drop diameter and impact velocity on the impact force of a drop colliding with a stationary plate were discussed with the VOF method. The results show that the impact force is slightly affected by the variation in contact angle but considerably influenced by the change in the droplet diameter and impact velocity. Moreover

if the impact force is normalized by the product of the 2.118

power of the droplet diameter and the 1.761

power of the droplet impact velocity

the curves of the normalized forces for drops at different Re and We numbers verse dimensionless time almost all collapse into a single curve

and the normalized peak force occurs at the dimensionless time of 0.26.

This indicates that the same size drop at a higher velocity experiences its peak impact force at an earlier time while the impact force of a larger drop at the same velocity reaches its peak at a later time.

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references

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