On the relation between the kinetic energy of pulsatory motion and the depth distribution of averaged velocities in a plane flow

Studied was the depth distribution of terms of the balance equation of the kinetic turbulent energy in a plane flow. The measurements were performed by the thermohydrometer (hot-wire) method in a measuring flume of a rectangular cross section. The experimental data were computer-processed with the use of statistic programs which enabled computing the Reynolds stress tensor components. Based on the hypothesis that, in the external layer of plane flows, a reduction of the momentum depends on the kinetic turbulent energy, an approximate equality of the von Karman parameter and the coefficient of mutual correlation between the longitudinal and vertical velocity components was obtained.