An experimental study of momentum-preserving shaped holes for film cooling using PSP and PIV

Wenwu Zhou, Blake Johnson, Hui Hu

Research output: Chapter in Book/Report/Conference proceedingConference contribution


An experimental investigation was conducted to study the performance of film cooling injection from a cylindrical hole and a “W-shaped” hole. A Pressure Sensitive Paint (PSP) technique was used to map the spatial distribution of film cooling effectiveness on the surface of the test plate based on a mass-transfer analogy. The effects of mass flux ratio and density ratio on film cooling effectiveness are investigated by performing PSP experiments at various mass flux ratio using two coolant gases. In order to investigate the kinematic relationship between film cooling effectiveness and mass flux ratio, a high resolution PIV system was used to conduct flow field measurements. Interactions between the mainstream flow and injection flow are also investigated to elucidate the kinematic mechanisms of film cooling.

Original languageEnglish (US)
Title of host publication52nd Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Electronic)9781624102561
StatePublished - 2014
Externally publishedYes
Event52nd Aerospace Sciences Meeting 2014 - National Harbor, United States
Duration: Jan 13 2014Jan 17 2014

Publication series

Name52nd Aerospace Sciences Meeting


Other52nd Aerospace Sciences Meeting 2014
Country/TerritoryUnited States
CityNational Harbor

ASJC Scopus subject areas

  • Aerospace Engineering


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