Open Access
ARTICLE
TURBINE BLADE FILM COOLING USING PSP TECHNIQUE
Je-Chin Han*, Akhilesh P. Rallabandi
Texas A&M University, College Station, Texas, 77843-3123, USA
* Corresponding Author: Email: .
Frontiers in Heat and Mass Transfer 2010, 1(1), 1-21. https://doi.org/10.5098/hmt.v1.1.3001
Abstract
Film cooling is widely used to protect modern gas turbine blades and vanes from the ever increasing inlet temperatures. Film cooling
involves a very complex turbulent flow-field, the characterization of which is necessary for reliable and economical design. Several
experimental studies have focused on gas turbine blade, vane and end-wall film cooling over the past few decades. Measurements
of heat transfer coefficients, film cooling effectiveness values and heat flux ratios using several different experimental methods have
been reported. The emphasis of this current review is on the Pressure Sensitive Paint (PSP) mass transfer analogy to determine the
film cooling effectiveness. The theoretical basis of the method is presented in detail. Important results in the open literature obtained
using the PSP method are presented, discussing parametric effects of blowing ratio, momentum ratio, density ratio, hole shape, surface
geometry, free-stream turbulence on flat plates, turbine blades, vanes and end-walls. The PSP method provides very high resolution
contours of film cooling effectiveness, without being subject to the conduction error in high thermal gradient regions near the hole.
Keywords
Cite This Article
Han, J., Rallabandi, A. P. (2010). TURBINE BLADE FILM COOLING USING PSP TECHNIQUE.
Frontiers in Heat and Mass Transfer, 1(1), 1–21.