Turbulence Measurements in a Corner Wall Jet1

Abstract

The corner wall jet is similar to the standard threedimensional wall jet with the exception that onehalf of the surface has been rotated counterclockwise by 90 deg. The corner wall jet is selected for study as the geometry occurs in practical applications and is an ideal benchmark case for numerical code validation. The corner wall jet investigated here is formed using a long round pipe with a Reynolds number of 159,000. Contours of the mean and turbulent flow field were measured using hotwire anemometry from x/D = 0 to 40. The results indicate that the ratio of lateraltovertical growth in the corner wall jet is approximately half that in a standard turbulent threedimensional wall jet. The results indicate that this behavior is not simply tied to a slower development of the corner wall jet.