On momentum transfer in a falling turbulent liquid film

Abstract

An experimental study of velocity profiles in the entrance region of turbulent liquid film flow is performed. Velocity profiles in the entrance region of film flow were determined at various velocities of the film in liquid dis-tributor for the range of 4870 < Re < 37000. The descrip-tion of experimental set-up is presented. Analysis of veloc-ity profiles allowed estimating the length of stabilization for turbulent film flow at various velocities of the film in liquid distributor. Variation of relative film velocity in the entrance region of turbulent film flow is estimated analyti-cally. Theoretical results are in good agreement with ex-perimental data.