亲爱的研友该休息了!由于当前在线用户较少,发布求助请尽量完整地填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!身体可是革命的本钱,早点休息,好梦!

Dynamic mode characteristics of flow instabilities in a single-stage compressor under different throttling processes

带宽遏流 失速(流体力学) 机械 物理 节气门 质量流 流动分离 气体压缩机 涡流 航空航天工程 控制理论(社会学) 湍流 计算机科学 工程类 热力学 控制(管理) 人工智能
作者
Ziwei Wang,Zhaolin Fan,Bin Li,J Wang,Fengshun Lu,Xiong Jiang
出处
期刊:Physics of Fluids [American Institute of Physics]
卷期号:36 (3)
标识
DOI:10.1063/5.0191171
摘要

To investigate the influence of throttling processes on dynamic characteristics of compressor stability, the rotating stall development of National Aeronautics and Space Administration Stage 35 was simulated with full-annulus Unsteady Reynolds-Averaged Navier–Stokes under different throttling processes. The numerical methods were verified. By combining Dynamic Mode Decomposition and flow field evolution research, the flow structures and dynamic characteristics of “critical mass flow” under different throttling processes were deeply studied; the flow mechanism of flow instabilities under different throttling processes was explored. It is found that the “critical mass flow” corresponds to the beginning of a rapid decrease in mass flow, mainly characterized by shock forward movement and a larger range of spillage flow. Around “critical mass flow,” if the throttle is still tightening, it presents stall pattern 2; otherwise, it presents stall pattern 1. During the pre-stall, both patterns are dominated by tip clearance vortex (TCV)-shock interference. Stall inception disturbance is generated from TCV-shock interference; pattern 1 presents a single disturbance, while pattern 2 presents multiple disturbances. Subsequently, the TCV-shock interference gradually weakens. The single stall disturbance of pattern 1 gradually develops and stabilizes. The multiple stall disturbances in pattern 2 undergo processes including fusion and disappearance, ultimately developing into a single stall cell. During the stable stall, the throttling processes have no significant impact on the speed of the stall cell, and the flow in the un-stalled region is basically consistent with the speedline. However, the tighter the throttle is, the larger the stalled region, and the weaker the flow capacity of the un-stalled region.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
14秒前
17秒前
YOLOM发布了新的文献求助10
18秒前
18秒前
小仙女应助Ni采纳,获得10
19秒前
20秒前
39秒前
神外魔法师完成签到,获得积分10
44秒前
忧伤的绍辉完成签到 ,获得积分10
51秒前
59秒前
干净听双完成签到,获得积分20
1分钟前
北风应助科研通管家采纳,获得10
1分钟前
科研通AI2S应助科研通管家采纳,获得10
1分钟前
keyanxiaobai完成签到 ,获得积分10
2分钟前
所所应助干净听双采纳,获得30
2分钟前
2分钟前
2分钟前
Lucas应助神外魔法师采纳,获得10
2分钟前
2分钟前
学谦完成签到 ,获得积分10
2分钟前
2分钟前
2分钟前
Owen应助老实的士萧采纳,获得10
2分钟前
2分钟前
干净听双发布了新的文献求助30
3分钟前
田様应助妩媚的夏烟采纳,获得10
3分钟前
科研通AI2S应助科研通管家采纳,获得10
3分钟前
快去爬山完成签到 ,获得积分10
3分钟前
4分钟前
Ni发布了新的文献求助10
4分钟前
Ni发布了新的文献求助10
5分钟前
5分钟前
科研通AI2S应助科研通管家采纳,获得10
5分钟前
yangjian完成签到,获得积分10
5分钟前
5分钟前
5分钟前
Krim完成签到 ,获得积分10
5分钟前
丘比特应助乖乖给姐躺好采纳,获得10
6分钟前
6分钟前
6分钟前
高分求助中
ФОРМИРОВАНИЕ АО "МЕЖДУНАРОДНАЯ КНИГА" КАК ВАЖНЕЙШЕЙ СИСТЕМЫ ОТЕЧЕСТВЕННОГО КНИГОРАСПРОСТРАНЕНИЯ 3000
Les Mantodea de Guyane: Insecta, Polyneoptera [The Mantids of French Guiana] 2500
Electron microscopy study of magnesium hydride (MgH2) for Hydrogen Storage 1000
生物降解型栓塞微球市场(按产品类型、应用和最终用户)- 2030 年全球预测 500
Quantum Computing for Quantum Chemistry 500
Thermal Expansion of Solids (CINDAS Data Series on Material Properties, v. I-4) 470
Assessing organizational change : A guide to methods, measures, and practices 400
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 物理 生物化学 纳米技术 计算机科学 化学工程 内科学 复合材料 物理化学 电极 遗传学 量子力学 基因 冶金 催化作用
热门帖子
关注 科研通微信公众号,转发送积分 3903932
求助须知:如何正确求助?哪些是违规求助? 3448742
关于积分的说明 10854406
捐赠科研通 3174145
什么是DOI,文献DOI怎么找? 1753755
邀请新用户注册赠送积分活动 847948
科研通“疑难数据库(出版商)”最低求助积分说明 790581