Conjugate Heat Transfer Evaluation of Turbine Blade Leading-Edge Swirl and Jet Impingement Cooling With Particulate Deposition

涡轮叶片 冷却液 材料科学 传热 喷射(流体) 机械 沉积(地质) 前沿 颗粒沉积 后缘 流量(数学) 涡轮机 机械工程 复合材料 工程类 物理 地质学 古生物学 沉积物 航程(航空)
作者
Xing Yang,Zihan Hao,Zhenping Feng,Phillip M. Ligrani,Bernhard Weigand
出处
期刊:Journal of turbomachinery [ASM International]
卷期号:146 (1) 被引量:7
标识
DOI:10.1115/1.4063676
摘要

Abstract Internal cooling structures for gas turbine engines are becoming more complicated to push the hot gas temperature as high as possible, which, however, allows particulates drawn into the coolant air to be more readily to deposit within these passages and thus greatly affect their flow loss and thermal performance. In this study, internal swirl cooling and jet impingement cooling subjected to particulate deposition were evaluated and compared using a conjugate heat transfer method, with an emphasis on the thermal effects of the insulative deposits. To accomplish the goal, an unsteady conjugate mesh morphing simulation framework was developed and validated, which involved particle tracking in an unsteady fluid flow, particle–wall interaction modeling, conjugate mesh morphing of both fluid and solid domains, and a deposit identification method. The swirl and the jet impingement cooling configurations modeled the internal cooling passage for the leading-edge region of a turbine blade and were investigated in a dust-laden coolant environment at real engine conditions. Coupling effects between the dynamic deposition process and the unsteady flow inside the two cooling channels were examined and the insulative effects of the deposits were quantified by comparing the temperatures on the external and internal surfaces of the metal channel walls, as well as on the deposit layers. Results demonstrated the ability of the newly developed, unsteady conjugate simulation framework to identify the deposits from the original bare wall surface and to predict the insulation effects of the deposits in the dynamic deposition process. The dust almost covered the entire impingement channel, while deposits were only seen in the vicinity of the jets in the swirl channel. Despite this, a dramatical decrease of convection heat transfer was found in the swirl channel because the swirling flow was sensitive to the interruption of the deposits. In contrast, the deposits improved the heat transfer rate in the impingement channel. When the thermal effects of the deposit layer were taken into account, the wall temperatures of both two cooling geometries were substantially elevated, exceeding the allowable temperature of the metal material. Due to the denser deposit coverage, the impingement channel wall had a greater temperature increase than the swirl channel. In terms of flow loss, the presence of the deposits inhibited the swirl intensity by interrupting the swirling flow and thus reduced the friction loss, whereas the pressure loss was improved by the deposits in the impingement cooling.
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
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
你在教我做事啊完成签到 ,获得积分10
1秒前
wen发布了新的文献求助50
2秒前
3秒前
4秒前
小二郎应助琳琳采纳,获得10
4秒前
犹豫的若发布了新的文献求助10
5秒前
123发布了新的文献求助10
5秒前
梅梅超勇敢完成签到 ,获得积分10
7秒前
Jiatu_Li完成签到,获得积分10
8秒前
8秒前
9秒前
9秒前
科研通AI5应助见青山采纳,获得10
10秒前
ding应助随机采纳,获得10
10秒前
CLAIR发布了新的文献求助10
10秒前
Eve完成签到 ,获得积分10
11秒前
JJ发布了新的文献求助10
11秒前
FashionBoy应助累鼠的牛马采纳,获得10
13秒前
情怀应助123采纳,获得10
14秒前
ding发布了新的文献求助10
14秒前
15秒前
17秒前
CLAIR完成签到,获得积分10
17秒前
18秒前
现代的十八完成签到,获得积分10
18秒前
18秒前
所所应助weirb采纳,获得30
20秒前
sin完成签到,获得积分20
20秒前
丘比特应助张弘采纳,获得10
21秒前
1911123434发布了新的文献求助10
21秒前
琳琳发布了新的文献求助10
21秒前
guowu完成签到 ,获得积分10
21秒前
22秒前
赘婿应助545采纳,获得10
22秒前
22秒前
22秒前
随机完成签到,获得积分10
24秒前
zz完成签到,获得积分10
24秒前
z706发布了新的文献求助10
24秒前
24秒前
高分求助中
All the Birds of the World 4000
Production Logging: Theoretical and Interpretive Elements 3000
Animal Physiology 2000
Les Mantodea de Guyane Insecta, Polyneoptera 2000
Am Rande der Geschichte : mein Leben in China / Ruth Weiss 1500
CENTRAL BOOKS: A BRIEF HISTORY 1939 TO 1999 by Dave Cope 1000
Machine Learning Methods in Geoscience 1000
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 3741086
求助须知:如何正确求助?哪些是违规求助? 3283852
关于积分的说明 10037232
捐赠科研通 3000684
什么是DOI,文献DOI怎么找? 1646647
邀请新用户注册赠送积分活动 783858
科研通“疑难数据库(出版商)”最低求助积分说明 750442