Open AccessMeasurements of mean flow and eddy transport over a film cooling surface
Author(s) -
Ling Wang,
Henry Tsang,
Terrence W. Simon,
E. R. G. Eckert
Publication year - 1996
Language(s) - English
Resource type - Reports
DOI - 10.2172/251410
Subject(s) - eddy diffusion , turbulence , mechanics , materials science , thermal diffusivity , anisotropy , flow (mathematics) , large eddy simulation , turbulence kinetic energy , intensity (physics) , thermodynamics , optics , physics
Results of an experimental study of the effects of blowing Velocity Ratio (VR = 0.5 and 1.0) and Free-Stream Turbulence Intensity (FSTI = 0.5% and 12%) on turbulent transport over a film-cooling test surface are presented. The surface has a single lateral row of streamwise-oriented holes angled 35{degree} from the surface and separated from one another by three hole diameters. The film cooling flow and mainstream flow are at the same temperature and the film cooling is supplied through long delivery tubes. Velocity, turbulence intensity and eddy transport profiles are presented. The ratios of lateral eddy diffusivity to wall-normal eddy diffusivity values measured in this program (4-15) provide documentation of strong anisotropy of eddy transport in the flow