An experimental investigation of a new hybrid film cooling scheme

M. G. Ghorab, Ibrahim Hassan

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

This paper presents an experimental investigation of the film cooling performance of a hybrid film cooling scheme using thermochromic liquid crystal technique. The scheme includes two consecutive film hole configurations with interior bending. The cooling performance was analyzed for blowing ratios ranging from 0.5 to 1.5. The bending effect of this scheme throttles the secondary flow causing it to spread widely over the downstream surfaces, and consequently enhance the film cooling at both low and high blowing ratios. The results showed that the hybrid scheme augmented the centerline and laterally averaged film cooling effectiveness compared to other schemes in literature.

Original languageEnglish
Pages (from-to)4994-5007
Number of pages14
JournalInternational Journal of Heat and Mass Transfer
Volume53
Issue number21-22
DOIs
Publication statusPublished - 2010
Externally publishedYes

Fingerprint

film cooling
Cooling
blowing
Blow molding
secondary flow
Liquid Crystals
Secondary flow
Liquid crystals
liquid crystals
cooling
configurations

Keywords

  • Film cooling effectiveness
  • Heat transfer coefficient ratio
  • Hybrid
  • NHFR
  • TLC

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Cite this

An experimental investigation of a new hybrid film cooling scheme. / Ghorab, M. G.; Hassan, Ibrahim.

In: International Journal of Heat and Mass Transfer, Vol. 53, No. 21-22, 2010, p. 4994-5007.

Research output: Contribution to journalArticle

@article{2a86053556e445c6a91f6bb3b38db2d9,
title = "An experimental investigation of a new hybrid film cooling scheme",
abstract = "This paper presents an experimental investigation of the film cooling performance of a hybrid film cooling scheme using thermochromic liquid crystal technique. The scheme includes two consecutive film hole configurations with interior bending. The cooling performance was analyzed for blowing ratios ranging from 0.5 to 1.5. The bending effect of this scheme throttles the secondary flow causing it to spread widely over the downstream surfaces, and consequently enhance the film cooling at both low and high blowing ratios. The results showed that the hybrid scheme augmented the centerline and laterally averaged film cooling effectiveness compared to other schemes in literature.",
keywords = "Film cooling effectiveness, Heat transfer coefficient ratio, Hybrid, NHFR, TLC",
author = "Ghorab, {M. G.} and Ibrahim Hassan",
year = "2010",
doi = "10.1016/j.ijheatmasstransfer.2010.05.026",
language = "English",
volume = "53",
pages = "4994--5007",
journal = "International Journal of Heat and Mass Transfer",
issn = "0017-9310",
publisher = "Elsevier Limited",
number = "21-22",

}

TY - JOUR

T1 - An experimental investigation of a new hybrid film cooling scheme

AU - Ghorab, M. G.

AU - Hassan, Ibrahim

PY - 2010

Y1 - 2010

N2 - This paper presents an experimental investigation of the film cooling performance of a hybrid film cooling scheme using thermochromic liquid crystal technique. The scheme includes two consecutive film hole configurations with interior bending. The cooling performance was analyzed for blowing ratios ranging from 0.5 to 1.5. The bending effect of this scheme throttles the secondary flow causing it to spread widely over the downstream surfaces, and consequently enhance the film cooling at both low and high blowing ratios. The results showed that the hybrid scheme augmented the centerline and laterally averaged film cooling effectiveness compared to other schemes in literature.

AB - This paper presents an experimental investigation of the film cooling performance of a hybrid film cooling scheme using thermochromic liquid crystal technique. The scheme includes two consecutive film hole configurations with interior bending. The cooling performance was analyzed for blowing ratios ranging from 0.5 to 1.5. The bending effect of this scheme throttles the secondary flow causing it to spread widely over the downstream surfaces, and consequently enhance the film cooling at both low and high blowing ratios. The results showed that the hybrid scheme augmented the centerline and laterally averaged film cooling effectiveness compared to other schemes in literature.

KW - Film cooling effectiveness

KW - Heat transfer coefficient ratio

KW - Hybrid

KW - NHFR

KW - TLC

UR - http://www.scopus.com/inward/record.url?scp=77955513188&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77955513188&partnerID=8YFLogxK

U2 - 10.1016/j.ijheatmasstransfer.2010.05.026

DO - 10.1016/j.ijheatmasstransfer.2010.05.026

M3 - Article

VL - 53

SP - 4994

EP - 5007

JO - International Journal of Heat and Mass Transfer

JF - International Journal of Heat and Mass Transfer

SN - 0017-9310

IS - 21-22

ER -