ABSTRACT

ABSTRACT: Turbulent jets can be found in a wide variety of applications. A theoretical determination of the velocity field, however, is possible only for jets in indefinitely wide spaces. In technical applications, the dimensions are often restricted. On the basis of measurements in an experimental basin, a quantitative comparison between the jet theory and the actual situation was carried out. Backward flows due to continuity are the reason that the dimensionless representation by means of the Gaussian curve is no longer possible. A modified Mexican Hat Wavelet is presented as a novel scaling function. This function permits the description of the occurring negative velocities.