Laser Induced Fluorescence Investigation Of Single Row Film Cooling At Various Inclination Angles And Blowing Ratios

Abstract

The objective of this study is to obtain experimental spatial concentration contours for the interaction of a jet in cross-flow for the application of film cooling. A statistical analysis of spatial temperature contours for the film trajectory at blowing ratios in the range of 0.5 to 1.5 is executed. All tests are conducted within a low speed wind tunnel with freestream velocity U and turbulence intensity y. Modules of cylindrical film cooling holes were 3D printed with inclination angles of 30, 35, 45, 60, 75, and 90 degrees, each with a thickness to diameter ratio of 2.56. Using acetone planar laser induced fluorescence (PLIF), spatial concentration contours of the centerline cross-section of the jets are measured. PLIF is chosen for its advantage of being a non-intrusive, instantaneous measurement technique and for its high flow visualization capabilities. Instantaneous, mean, and root mean square and concentration contours are obtained and presented. As blowing ratio increases, jet trajectory becomes increasingly detached from the wall. Similarly, as inclination angle for a given blowing ratio increases equivalent behavior occurs.

Publication Date

1-1-2016

Publication Title

54th AIAA Aerospace Sciences Meeting

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

Socpus ID

85007441181 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85007441181

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