请选择 进入手机版 | 继续访问电脑版
设为首页收藏本站

航空发动机&燃气轮机之家

 找回密码
 立即注册

QQ登录

只需一步,快速开始

扫一扫,访问微社区

搜索
热搜: 活动 交友 discuz

燃气轮机透平的高温叶片如何高效冷却?

2017-5-19 10:17| 发布者: admin| 查看: 3173| 评论: 1290

摘要: 燃气轮机透平叶片冷却通道传热特性研究进展谢永慧, 景祺, 张荻, 申仲旸, 姜伟DOI:10.13334/j.0258-8013.pcsee.1625301项目背景  提高透平进口温度是开发高效燃气轮机的重要手段,由此导致高温叶片在远超金属允许 ...
燃气轮机透平叶片冷却通道传热特性研究进展

谢永慧, 景祺, 张荻, 申仲旸, 姜伟

DOI:10.13334/j.0258-8013.pcsee.162530

1
项目背景
  提高透平进口温度是开发高效燃气轮机的重要手段,由此导致高温叶片在远超金属允许温度的环境中运行,目前先进航空发动机透平进口燃气温度已超过1700℃,先进重型燃气轮机透平进口温度已达1600℃。为了保证叶片的安全性,需要布置大量冷却结构以使叶片温度处于合理范围。现代燃气轮机高温透平叶片有多种冷却方式,包括内部强化对流冷却、冲击冷却以及外部气膜冷却等,并且各种方式可能相互耦合,导致冷却通道中的流动及传热特性非常复杂。因此,要研发高效低阻的叶片冷却方式,就必须充分掌握其传热与阻力特性。  
2
论文所解决的问题及意义

  论文总结了透平叶片冷却通道中流动与传热的基本理论与数值实验方法,综述了典型U型冷却通道中的扰流冷却特性、冷却通道与气膜孔结构耦合传热特性、以及内部冷却与外部冷却耦合传热特性的研究现状

  

  论文可为进一步理解透平叶片内部冷却通道的流动与传热机理、掌握科学的研究方法、设计更为高效的透平叶片冷却系统提供指导,具有重要的学术意义和工程应用价值。 

3
论文重点内容
  论文首先对透平叶片U型通道中布置肋片、针状翅片、球窝/球凸及组合传热结构等的研究进行了总结,分析了各种扰流结构和旋转效应对冷却效果的影响;其次,综述了冷却通道与气膜孔结构耦合传热的研究现状,目前研究的重点是布置肋片、球窝等强化传热结构与气膜孔相互耦合的流动传热特性;再次,归纳了内部冷却与外部冷却相耦合时的传热特性研究现状,如叶片尾缘劈缝叶背面区域的气膜冷却与对流传热共同作用,指出该耦合传热过程是叶片冷却中的重要现象。最后,论文认为需要进一步开展组合传热结构与气膜孔等相互耦合时的传热特性研究,并重点研发适用于透平叶片冷却通道的高效低阻强化传热结构。  
4
结论

  1)U型通道转角结构使叶片内部通道第二列的传热性能显著增强;采用多种组合强化传热结构是进一步提高传热性能的有效方法;通道旋转效应对传热性能存在较大影响,需要进一步深入研究。


  2)气膜孔的布置改变了冷却通道中的流动传热特性;肋片–气膜孔耦合结构显著强化了传热,但对其他组合结构与气膜孔抽气的耦合作用、以及对透平叶片叶顶和尾缘区域抽气作用的研究还不充分。


  3)透平叶片的尾缘劈缝叶背面存在内部冷却与外部冷却的耦合作用,目前考虑这一耦合效应的研究较少,未来可以深入开展相关研究。


  4)开发高效低阻的新型强化传热结构是透平叶片冷却研究的重要方向。

图1 典型透平叶片冷却方式

图2 尾缘劈缝叶背面冷却示意图



鲜花

握手

雷人

路过

鸡蛋
发表评论

最新评论

引用 游客 2018-5-27 04:49
buyers sildenafil citrate tablets
<a href="http://canadamdonlineget.com/#">canadian pharmacies that ship to the us</a>
nomes de viagra generico
[url=http://canadamdonlineget.com/#]aarp recommended canadian pharmacies[/url]
viagra cialis levitra prices
<a href="http://viagradcvy.com/#">viagra without a doctor prescription</a>
viagra unterschied 50mg 100mg
[url=http://viagradcvy.com/#]viagra without a doctor prescription usa[/url]
sildenafil lek 100 mg table ...
引用 游客 2018-5-27 02:12
buy legal viagra uk
<a href="http://viagranbdnr.com/#">viagra without a prior doctor prescription</a>
buy viagra online - http //buyviagraonlinehere.com
[url=http://viagranbdnr.com/#]viagra without prescription[/url]
where is the best place to buy viagra
<a href="http://canadamdonlineget.com/#">top rated online canadian pharmacies</a>
viagra online bestellen rezeptfrei
[url=http://canadamdonlineget.com/#]online canadian pharmacies[/url]
viagra 250mg ...
引用 游客 2018-5-27 01:16
is it illegal to buy viagra online in the us
<a href="http://canadamdonlineget.com/#">canadian online pharmacies</a>
old do u have buy viagra
[url=http://canadamdonlineget.com/#]aarp recommended canadian pharmacies[/url]
medicamento generico do viagra
<a href="http://viagradcvy.com/#">viagra without prescription</a>
cheaper viagra cialis levitra
[url=http://viagradcvy.com/#]viagra without doctor prescription[/url]
overnight shipping viagra online ...
引用 游客 2018-5-26 06:40
buy viagra with prescription
<a href="http://viagranbdnr.com/#">viagra without a doctors prescription</a>
tabletas viagra pills
[url=http://viagranbdnr.com/#]viagra without prescription[/url]
buy female viagra online india
<a href="http://canadamdonlineget.com/#">canadian pharmacies that ship to the us</a>
info viagra 50mg
[url=http://canadamdonlineget.com/#]canadian online pharmacies[/url]
viagra online sales india
引用 游客 2018-5-25 21:33
buy viagra in mexico
<a href="http://viagranbdnr.com/#">generic viagra without a doctor prescription</a>
cheap viagra tablets sale
[url=http://viagranbdnr.com/#]viagra without a doctor prescription[/url]
expiration viagra pills
<a href="http://canadamdonlineget.com/#">list of reputable canadian pharmacies</a>
prix viagra 50 mg pharmacie
[url=http://canadamdonlineget.com/#]top rated online canadian pharmacies[/url]
is 100mg of viagra a lot ...
引用 游客 2018-5-25 17:29
northwest pharmacy canada
[url=http://exceleste.com/]canadian online pharmacy[/url]
canadian drug store
<a href="http://binaryoptions60sec.com/">canada drug pharmacy</a>
引用 游客 2018-5-25 16:59
where can i buy viagra with paypal
<a href="http://viagranbdnr.com/#">viagra without a doctors prescription</a>
best viagra pills uk
[url=http://viagranbdnr.com/#]viagra without a prior doctor prescription[/url]
viagra online with mastercard
<a href="http://canadamdonlineget.com/#">top rated online canadian pharmacies</a>
buy viagra online from canada
[url=http://canadamdonlineget.com/#]canadian pharmacies that ship to the us[/url]
vendita viagra generico  ...
引用 游客 2018-5-25 14:17
buy online prescription drugs
[url=http://delichappraisal.com/]canadian pharmacies shipping to usa[/url]
canadian rx pharmacy online
<a href="http://talahicc.com/">canadianpharmacy</a>
引用 游客 2018-5-25 10:58
r http://cialisxtl.com cialis generic name <a href= http://cialisxtl.com >buy cialis online</a> sake [url=http://cialisxtl.com]buy cialis[/url] cialis coupon cvs
引用 游客 2018-5-25 06:39
best price for viagra at pharmacy
<a href="http://viagranbdnr.com/#">viagra without doctor prescription</a>
generic viagra dosage
[url=http://viagranbdnr.com/#]generic viagra without a doctor prescription[/url]
viagra wholesale manufacturers
<a href="http://canadamdonlineget.com/#">canada pharmacies online prescriptions</a>
buy viagra in atlanta
[url=http://canadamdonlineget.com/#]online canadian pharmacies[/url]
cheapest viagra cialis online ...
引用 游客 2018-5-23 11:06
online rx pharmacy
[url=http://irdrollout.com/]trust pharmacy canada[/url]
canadian pharmacy without prescription
<a href="http://irdrollout.com/">aarp recommended canadian pharmacies</a>
引用 游客 2018-5-23 11:02
drugs from canada
[url=http://canadianpharmacysilo.com/]canadian drugs[/url]
canadian online pharmacy
<a href="http://waltcoexpress.com/">trust pharmacy canada</a>
引用 游客 2018-5-23 10:50
generic drug names viagra
<a href="http://viagramakay.com/#">viagra without doctor prescription</a>
is 100mg of viagra dangerous
[url=http://viagramakay.com/#]viagra without a doctor prescription[/url]
generic viagra buy uk
<a href="http://canadamypharmacykee.com/#">canada pharmacies</a>
cheap viagra scams
[url=http://canadamypharmacykee.com/#]online canadian pharmacies[/url]
viagra online cheapest
引用 游客 2018-5-23 07:25
cheap prescription drugs online
[url=http://canadianpharmaciesonlinebsl.com/]canada pharmacies online[/url]
compare prescription prices
<a href="http://forextradingiq.com/">canadian pharmacy online</a>
引用 游客 2018-5-23 07:06
buy viagra hcmc
<a href="http://viagramakay.com/#">viagra without doctor</a>
getting viagra ontario
[url=http://viagramakay.com/#]generic viagra without a doctor prescription[/url]
mixing viagra and cialis together
<a href="http://canadamypharmacykee.com/#">canada pharmacies</a>
best site to buy generic viagra
[url=http://canadamypharmacykee.com/#]canada pharmacies online prescriptions[/url]
sildenafil citrate 75mg
引用 游客 2018-5-23 06:01
pharmacy drug store
[url=http://waltcoexpress.com/]trust pharmacy canada[/url]
web medical information
<a href="http://bestbinaryoptioninfo.com/">canada drugs</a>
引用 游客 2018-5-23 05:51
24 hour pharmacy
[url=http://forextradingiq.com/]canadian pharmacies[/url]
discount pharmaceuticals
<a href="http://interlandchemie.com/">canadian pharmacies shipping to usa</a>
引用 游客 2018-5-23 05:38
what happens when you take cialis and viagra together
<a href="http://viagramakay.com/#">viagra without prescription</a>
was sind viagra pillen
[url=http://viagramakay.com/#]generic viagra without a doctor prescription[/url]
bula viagra 50 mg pfizer
<a href="http://canadamypharmacykee.com/#">best canadian mail order pharmacies</a>
buy viagra australia online
[url=http://canadamypharmacykee.com/#]list of reputable canadian pharmacies[/url]
the other guys li ...
引用 游客 2018-5-23 01:44
pharmacy price compare
[url=http://canadianpharmaciescubarx.com/]canadian pharmacies online[/url]
us pharmacy no prior prescription
<a href="http://delichappraisal.com/">canadian pharmacies that are legit</a>
引用 游客 2018-5-23 00:11
mexican pharmacies
[url=http://eos-media.com/]canadian cialis[/url]
discount pharmacy
<a href="http://waltcoexpress.com/">canada drug pharmacy</a>

查看全部评论(1290)

QQ|Archiver|手机版|小黑屋|航空发动机&燃气轮机之家 ( 沪ICP备16010109号  

GMT+8, 2018-5-27 17:43 , Processed in 0.094986 second(s), 19 queries .

Powered by Discuz! X3.2

© 2001-2013 Comsenz Inc.

返回顶部