• Register
  • Login

Anbar Journal of Engineering Sciences

  1. Home
  2. Enhancement of Adiabatic Film Cooling Effectiveness by Using Conical Shape Hole

Current Issue

By Issue

By Author

By Subject

Author Index

Keyword Index

About Journal

News

Aims and Scope

Editorial Board

Publication Ethics

Indexing and Abstracting

Related Links

FAQ

Peer Review Process

Journal Metrics

Enhancement of Adiabatic Film Cooling Effectiveness by Using Conical Shape Hole

    Authors

    • Assim. H. Yoosif
    • Kutaeba J. M. AL-Khishali
    • Falah F. Hatem
,
10.37649/aengs.2013.80601
  • Article Information
  • Download
  • Export Citation
  • Statistics
  • Share

Abstract

Film cooling is one of the methods used to protect the surfaces exposed to hightemperature
flows, such as those exist in gas turbines. It involves the injection of coolant fluid (at
a lower temperature than that of the main flow) to cover the surface to be protected. This
injection is through holes that can have various shapes; simple shapes, such as those with straight
cylindrical or shaped holes (included many holes geometry, like conical holes). The
computational results show that immediately downstream of the hole exit, a horseshoe vortex
structure consisting of a pair of counter-rotating vortices is generated. This vortex generation
affected the distribution of film coolant over the surface being protected. The fluid dynamics of
these vortices are dependent upon the shape of the film cooling hole, and blowing ratio, therefore
the film coolant coverage which determines the film cooling effectiveness distribution and also
has an effect on the heat transfer coefficient distribution. Differences in horseshoe vortex
structures and in resultant effectiveness distributions are shown for cylindrical and conical hole
cases for blowing ratios of 0.5 and 1. The computational film cooling effectiveness values
obtained are compared with the existing experimental results. The conical hole provides greater
centerline film cooling effectiveness immediately at the hole exit, and better lateral film coolant
coverage away of the hole exit. The conical jet hole enhanced the average streamwise adiabatic
film cooling effectiveness by 11.11% and 123.2% at BR= 0.5 and 1.0, respectively, while in the
averaged lateral adiabatic in the spanwise direction, the film cooling effectiveness enhanced by
61.75% and 192.6% at BR= 0.5 and 1.0, respectively

Keywords

  • film cooling
  • effectiveness
  • conical holes
  • Enhancement
  • XML
  • PDF 2.52 M
  • RIS
  • EndNote
  • Mendeley
  • BibTeX
  • APA
  • MLA
  • HARVARD
  • VANCOUVER
    • Article View: 235
    • PDF Download: 110
Anbar Journal of Engineering Sciences
Volume 6, Issue 2
November 2013
Page 465-478
Files
  • XML
  • PDF 2.52 M
History
  • Receive Date: 01 December 2013
  • Revise Date: 20 December 2013
  • Accept Date: 25 December 2013
Share
Export Citation
  • RIS
  • EndNote
  • Mendeley
  • BibTeX
  • APA
  • MLA
  • HARVARD
  • VANCOUVER
Statistics
  • Article View: 235
  • PDF Download: 110

APA

H. Yoosif, A., J. M. AL-Khishali, K., & F. Hatem, F. (2013). Enhancement of Adiabatic Film Cooling Effectiveness by Using Conical Shape Hole. Anbar Journal of Engineering Sciences, 6(2), 465-478. doi: 10.37649/aengs.2013.80601

MLA

Assim. H. Yoosif; Kutaeba J. M. AL-Khishali; Falah F. Hatem. "Enhancement of Adiabatic Film Cooling Effectiveness by Using Conical Shape Hole". Anbar Journal of Engineering Sciences, 6, 2, 2013, 465-478. doi: 10.37649/aengs.2013.80601

HARVARD

H. Yoosif, A., J. M. AL-Khishali, K., F. Hatem, F. (2013). 'Enhancement of Adiabatic Film Cooling Effectiveness by Using Conical Shape Hole', Anbar Journal of Engineering Sciences, 6(2), pp. 465-478. doi: 10.37649/aengs.2013.80601

VANCOUVER

H. Yoosif, A., J. M. AL-Khishali, K., F. Hatem, F. Enhancement of Adiabatic Film Cooling Effectiveness by Using Conical Shape Hole. Anbar Journal of Engineering Sciences, 2013; 6(2): 465-478. doi: 10.37649/aengs.2013.80601

  • Home
  • About Journal
  • Editorial Board
  • Submit Manuscript
  • Contact Us
  • Glossary
  • Sitemap

News

  • Important Announcement for Dear Researchers 2023-01-15
  • The Publish of the Second Issue in Volume 13, 2022 2022-11-15
  • Publish the First Issue in Volume 13 , 2022 2022-05-15

This journal is licensed under a Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

© 2023, College of Engineering, University of Anbar

Newsletter Subscription

Subscribe to the journal newsletter and receive the latest news and updates

© Journal Management System. Powered by ejournalplus.com