APPROXIMATE METHOD FOR CALCULATING THE VELOCITY PROFILE OF A TWO-DIMENSIONAL STATIONARY TURBULENT LIQUID FLOW

A developed stationary two-dimensional turbulent fl ow of an incompressible fl uid in channels and pipes is studied. The entire fl ow was divided into three zones: a laminar zone near the boundaries of the channel (pipe) and a transition and turbulent ones that follow. The laminar zone and part of the transition zone were combined into one zone, for which a linear fl ow velocity profi le was assumed in the channel and a parabolic velocity profi le with corresponding additional functions in the pipe. For the zone consisting of a turbulent core and the rest of the transition zone, a logarithmic fl ow velocity profi le was taken. Comparison of the results of calculations with experimental data has been carried out, which has shown their acceptable agreement.
A developed stationary two-dimensional turbulent fl ow of an incompressible fl uid in channels and pipes is studied. The entire fl ow was divided into three zones: a laminar zone near the boundaries of the channel (pipe) and a transition and turbulent ones that follow. The laminar zone and part of the transition zone were combined into one zone, for which a linear fl ow velocity profi le was assumed in the channel and a parabolic velocity profi le with corresponding additional functions in the pipe. For the zone consisting of a turbulent core and the rest of the transition zone, a logarithmic fl ow velocity profi le was taken. Comparison of the results of calculations with experimental data has been carried out, which has shown their acceptable agreement.
Author:  V. N. Utesinova, V. V. Markov
Keywords:  stationary turbulent fl ow, velocity profi le, approximate method
Page:  1227