• 首页期刊介绍编委会期刊订阅广告合作联系我们English
  • 选择皮肤:
白万栋,梁栋,陈伟.肋片扰流对柱肋通道传热和压损影响[J].航空动力学报,2019,34(11):2509~2515
肋片扰流对柱肋通道传热和压损影响
Rib influence on heat transfer and pressure drop in pin-fin array
投稿时间:2019-02-27  
DOI:10.13224/j.cnki.jasp.2019.11.023
中文关键词:  涡轮叶片  内部冷却  肋片  柱肋  传热和压损
英文关键词:turbine blade  internal cooling  rib  pin-fin  heat transfer and pressure drop
基金项目:国家自然科学基金(51876132); 中央高校基本科研业务费专项(YJ201761)
作者单位
白万栋 四川大学 空天科学与工程学院,成都 610065 
梁栋 四川大学 空天科学与工程学院,成都 610065 
陈伟 四川大学 空天科学与工程学院,成都 610065 
摘要点击次数: 221
全文下载次数: 190
中文摘要:
      针对涡轮叶片内部通道上、下游不同冷却结构的相互影响,采用瞬态液晶实验方法研究了上游90°、60°,V形和W形四种肋片诱导产生的入口条件,对柱肋通道传热分布、强化传热水平和压损的影响,并与无肋片(均匀入口条件)的柱肋通道进行了对比。结果表明,相比于无肋片情况的均匀入口条件,肋片诱导的涡流使柱肋通道底面的传热分布在展向变得不均匀。肋片在增强柱肋底面传热的同时降低了通道压损,从而提升柱肋通道的综合换热效率(但整体通道的流动损失增加了)。其中,W形和90°肋片使柱肋通道具有最高的传热效率,其次是V形和60°肋片,不带肋片的情况的综合传热效率最低。
英文摘要:
      For the interaction between diverse internal cooling structures in turbine blades, various shaped ribs’ influences on pin-fin array heat transfer and pressure drop were investigated using a transient liquid crystals test. The 90°, 60°, V-shaped and W-shaped ribs were considered to compare the characteristic differences of pin-fin array heat transfer distribution, heat transfer enhancement and pressure drop levels. The results showed that upstream ribs made the spanwise variation of pin-fin endwalls heat transfer non-uniform. The vortices induced by upstream ribs appeared to enhance pin-fin array heat transfer but reduce pressure drop, leading to an overall thermal efficiency improvement. The W-shaped and 90° ribs made pin-fin arrays yield the best thermal efficiency and then the V-shaped and 60° ribs.
查看全文  查看/发表评论  下载PDF阅读器
关闭
.