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[1]戴青雯,杨建文,杨 斌,等.单股射流倾斜撞壁影响因素的数值模拟[J].火箭推进,2023,49(06):46-54.
　DAI Qingwen,YANG Jianwen,YANG Bin,et al.Numerical simulation of the influence of single jet obliquely impinging against wall[J].Journal of Rocket Propulsion,2023,49(06):46-54.
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单股射流倾斜撞壁影响因素的数值模拟

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V] 卷: 49 期数: 2023年06期 页码: 46-54 栏目: 目次 出版日期: 2023-12-25
Title:
Numerical simulation of the influence of single jet obliquely impinging against wall
文章编号:
1672-9374(2023)06-0046-09
作者:
戴青雯1; 杨建文2; 杨 斌1; 王 莹1
1.上海理工大学 能源与动力工程学院 上海市动力工程多相流动与传热重点实验室,上海 200093; 2.西安航天动力研究所,陕西 西安 710100
Author(s):
DAI Qingwen1;  YANG Jianwen2;  YANG Bin1;  WANG Ying1
1.Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering,School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China; 2.Xi'an Aerospace Propulsion Institute, Xi'an 710100, China
关键词:
液体火箭发动机;  倾斜射流;  液膜;  数值模拟;  气液两相流
Keywords:
liquid rocket engine;  oblique jet impinging;  liquid film;  numerical simulation;  gas-liquid flow
分类号:
V434+.14
文献标志码:
A
摘要:
为研究倾斜射流撞击固体表面后液膜的形态变化规律,结合VOF模型和多面体混合网格的数值模拟方法,通过分析不同工况下倾斜射流撞壁后液膜的几何特征参数变化规律,获得了不同工况下液膜铺展的关键特征。研究结果表明:射流撞壁后,壁面压力从液膜的边缘水跃区到中心轴线逐渐减小; 随着射流速度增大,壁面在撞击点附近受到的压力增大,而在液膜汇集区受到的压力减小; 液膜在撞击点附近速度最大,在水跃区汇集点附近速度最小; 随着射流孔径增大,液膜最大速度和最小速度区域的面积增大。
Abstract:
In order to investigate the morphological variation rule of liquid film after oblique cylindrical jet impinging on solid surface, a multiphase flow model named Volume of Fluid Phase Model(VOF)was adopted and combined with the polyhedral hybrid grid.The geometric characteristic parameters variations of the liquid film after the jet impacting on the wall obliquely under different working conditions were analyzed, and the key characteristics of the liquid film spreading under different working conditions were obtained.The results show that after the jet dashing against the solid surface obliquely, the wall pressure gradually decreases from the edge of the liquid film to the central axis.As the jet velocity increases, the pressure on the wall near the impinging point increases, while the pressure on the liquid film collection area decreases.At the same time, the liquid film has the maximum velocity, which occurs near the impact point, and the minimum velocity appears near the confluence point of the hydraulic jump zone.As the jet aperture increases, the area of the maximum velocity and minimum velocity region of the spreading liquid film scales up obviously.

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备注/Memo

收稿日期:2023-02-13; 修回日期:2023-05-26
基金项目:国家自然科学基金(51806144)
作者简介:戴青雯(1998—),女,硕士,研究领域为气液两相流的数值模拟仿真。
通信作者:王 莹(1984—),女,博士,教授,研究领域为流体力学和流动控制。

更新日期/Last Update: 1900-01-01