降雨环境下车身表面水相分布特性

殷硕; 于梦阁; 盛旭高

doi:10.13433/j.cnki.1003-8728.20200646

降雨环境下车身表面水相分布特性

doi: 10.13433/j.cnki.1003-8728.20200646

殷硕^1,,
于梦阁^{1, 2, ,},
盛旭高¹

1.
青岛大学机电工程学院，山东青岛　266071
2.
青岛大学自动化与电气工程学院系统科学博士后流动站，山东青岛　266071

基金项目: 国家自然科学基金项目（51705267）与中国博士后科学基金项目（2018M630750）

详细信息

作者简介:
殷硕（1997−），硕士研究生，研究方向为车辆空气动力学和系统动力学，yinshuo99999@163.com

通讯作者:
于梦阁，副教授，硕士生导师，博士，yumengge0627@163.com

中图分类号: U46
计量
- 文章访问数: 155
- HTML全文浏览量: 62
- PDF下载量: 14
- 被引次数: 0
出版历程
- 收稿日期: 2021-02-21
- 网络出版日期: 2023-04-21
- 刊出日期: 2023-03-25

Water Phase Distribution Characteristics of Vehicle Body Surface Under Rainfall Environment

YIN Shuo^1
,,
YU Mengge^{1, 2
, ,},
SHENG Xugao¹

1.
College of Mechanical and Electrical Engineering, Qingdao University, Qingdao 266071, Shandong, China
2.
Postdoctoral Research Station of System Science, College of Automation and Electrical Engineering, Qingdao University, Qingdao 266071, Shandong, China

摘要

摘要: 本文建立了汽车外流场空气动力学数值计算模型，结合 Lagrangian discrete phase model和Eulerian wall film model两种方法模拟了水相的生成和发展过程。在此基础上，开展不同降雨强度、不同车速条件下的车身表面水相生成计算，研究影响水相分布变化的因素。研究结果表明：在一定的车速和降雨强度条件下，车身水相厚度逐渐增大，最终趋于稳定；当车速一定时，车头、前窗、后窗和侧窗区域水相厚度随降雨强度的增大而增大；当降雨强度一定时，车头、后窗和侧窗水相厚度随车速增大而增大，而前窗水相厚度随车速增大而减小。
- 汽车外流场 /
- 数值计算 /
- 水相分布 /
- 车速 /
- 降雨强度
Abstract: In this paper, a numerical simulation model of a vehicle's aerodynamic flow field was established, and the generation and development processes of water phase were simulated with the Lagrangian discrete phase model and the Eulerian wall film model. On this basis, the formation of water phase on the body surface under different rainfall intensity and velocity was calculated, and the factors affecting the distribution of water phase were studied. The results show that under certain conditions of velocity and rainfall intensity, the thickness of water phase gradually increases and finally becomes stable. When the velocity is constant, the thickness of water phase in the front window, rear window and side window increases with the increase of rainfall intensity. When the rainfall intensity is constant, the water phase thickness on the front window, rear window and side window increases with the increase of vehicle velocity, while the water phase thickness on the front window decreases with the increase of vehicle velocity.
- vehicle outflows /
- numerical simulation /
- water phase distribution /
- velocity /
- rainfall intensity

HTML全文

图 1 MIRA阶梯背车型尺寸示意图

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图 2 计算区域

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图 3 计算网格

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图 4 尾部流场纵对称面上速度流线图

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图 5 离散相粒子分布情况

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图 6 车身水相分布及变化

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图 7 车身前部表面切应力及涡流分布

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图 8 车头和各车窗区域水相变化

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图 9 不同降雨强度下车头和各车窗区域水相厚度变化

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图 10 不同车速下车头和侧窗区域水相厚度变化

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表 1 网格独立性验证

网格密度	网格数量/万	数值计算	TJ-2	相对误差/%	IVK	相对误差/%	HD-2	相对误差/%
粗网格	877	0.302		2.00		0.98		4.43
标准网格	1 287	0.304	0.296	2.70	0.305	0.33	0.316	3.79
细网格	1 892	0.303		2.30		0.65		4.11

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