液滴撞击单根细丝分散特性的数值模拟研究

刘金鹏; 丰生杰; 张文博; 刘子雄

doi:10.21656/1000-0887.460022

液滴撞击单根细丝分散特性的数值模拟研究

doi: 10.21656/1000-0887.460022

1. 中海油田服务股份有限公司一体化新能源事业部，天津 300459;
2. 东北石油大学石油工程学院，黑龙江大庆 163318

基金项目:

中海油服科技项目(YSB20YF010)

详细信息

作者简介:
刘金鹏（1987—），男，工程师(通信作者. E-mail: liujp12@cosl.com.cn).

通讯作者:
刘金鹏（1987—），男，工程师(通信作者. E-mail: liujp12@cosl.com.cn).

中图分类号: O35
计量
- 文章访问数: 20
- HTML全文浏览量: 6
- PDF下载量: 5
- 被引次数: 0
出版历程
- 收稿日期: 2025-02-06
- 修回日期: 2025-04-02
- 网络出版日期: 2026-04-01
- 刊出日期: 2026-03-01

Numerical Study on Dispersion Characteristics of Droplets Impacting on a Single Fiber

1. Integrated New Energy Division, CNOOC Oilfield Services Limited, Tianjin 300459, P.R.China;
2. School of Petroleum Engineering, Northeast Petroleum University, Daqing, Heilongjiang 163318, P.R.China

摘要

摘要: 超重力反应器因其优异的传质能力，在碳捕集过程中发挥着至关重要的作用.金属网填料作为核心结构，旨在增强传质性能.为深入理解其背后的分散机理，通过数值模拟，应用流体体积法，探讨了液滴撞击单根丝的过程.系统地分析了初始速度 (u_{0_{)、初始直径(D_{0_{)、撞击偏心距离(e)和撞击角度(θ)对液滴撞击单根丝后的变形演化行为及分散特性的影响.中心或垂直撞击可分为四个主要阶段：分裂、丝下融合、拉伸和断裂脱离.而在偏心和非垂直撞击过程中，还观察到异步断裂脱离、滑行分裂和斜向断裂脱离阶段.随后，引入无量纲时间(t^{*^{)和气液界面面积增加率(η)对撞击后分散特性进行了定量分析.研究表明，增大初始速度、减小液滴直径、最小化撞击偏心距离以及增大撞击角度均有助于提高分散性能.基于此，提出了液滴最大气液界面面积的关联式，获得影响因素重要性排序为u_{0_{>θ>e>D_{0_.}}}}}}}}}
- 液滴撞击 /
- 变形演化 /
- 分散特性 /
- 气液界面面积 /
- 计算流体力学仿真
Abstract: The high-gravity reactor, renowned for its superior mass transfer efficiency, plays a pivotal role in carbon capture processes. The wire mesh packing serves as the primary structural element enhancing mass transfer. To fully comprehend the dispersion mechanism, it is essential to investigate the dynamics of droplets impacting on a single fiber. The volume of fluid method was employed to numerically examine the interaction between a droplet and a fiber. The effects of factors such as the initial velocity (u₀),the initial diameter (D₀),the impact eccentricity (e),and the impact angle (θ)on droplet deformation and dispersion characteristics were analyzed in detail. Vertical or central impacts were divided into 4 key stages: splitting, merging, stretching, and breaking. In contrast, eccentric and nonvertical impacts exhibit asynchronous breaking, sliding splitting, and oblique deformation stages. To quantitatively assess the post-impact dispersion characteristics, the dimensionless time (t^*)and the gasliquid interfacial area growth rate (η)were introduced. The results indicate that, increasing the initial velocity, reducing the droplet diameter, minimizing the eccentric distance, and maximizing the impact angle all enhance dispersion. A correlation was established to predict the maximum increase rate in gas-liquid interfacial area.
- droplet impact /
- deformation evolution /
- dispersion characteristic /
- gas-liquid interfacial area /
- computational fluid dynamics (CFD) simulation

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参考文献(23)

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