火箭推进2023，Vol.49Issue(6)：46-54,9.
单股射流倾斜撞壁影响因素的数值模拟
Numerical simulation of the influence of single jet obliquely impinging against wall
摘要
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 ana-lyzed,and the key characteristics of the liquid film spreading under different working conditions were ob-tained.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.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Key words
liquid rocket engine/oblique jet impinging/liquid film/numerical simulation/gas-liquid flow分类
航空航天引用本文复制引用
戴青雯,杨建文,杨斌,王莹..单股射流倾斜撞壁影响因素的数值模拟[J].火箭推进,2023,49(6):46-54,9.基金项目
国家自然科学基金(51806144) （51806144）
