Influence of tip injection and film cooling for blade tip flow and heat transfer

Kuahai Yu, Liuxian Hu, Xi Yang, Zhufeng Yue

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

A numerical based study was conducted to further understanding of turbine tip leakage and flow mechanisms for squealer tip blade. Three blade geometry models with different tips are established. They are squealer tip blade, squealer tip with injection holes blade, squealer tip with injection and film cooling holes blade, separately. Coupled aerodynamic and heat transfer numerical simulation method is used to study blade tip flow and heat transfer based the whole blade computational model. The results show that tip coolant injection will perform a positive effect for the resisting tip leakage, and it will reduce the temperature of blade tip surface and squealer rim, greatly. Film cooling near tip can cool blade squealer rim effectively, but it brings extra total pressure loss.

Original languageEnglish
Title of host publicationMaterials and Computational Mechanics
Pages643-646
Number of pages4
DOIs
StatePublished - 2012
Event2011 International Conference on Applied Mechanics, Materials and Manufacturing, ICAMMM 2011 - Shenzhen, China
Duration: 18 Nov 201120 Nov 2011

Publication series

NameApplied Mechanics and Materials
Volume117-119
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

Conference2011 International Conference on Applied Mechanics, Materials and Manufacturing, ICAMMM 2011
Country/TerritoryChina
CityShenzhen
Period18/11/1120/11/11

Keywords

  • Cooling blade
  • Film cooling
  • Flow and heat transfer
  • Injection holes
  • Squealer tip

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