"In the work presented in this Note, an Indirect Turbulence Model (ITM) is proposed to. derive the mean velocity profiles in wall-bounded flows in hydraulically smooth channels. having a very wide rectangular cross section. The analytical expression of the mean velocity. distribution is given. The connection between the velocity distribution parameters and. Reynolds’ number is indicated. The thickness of the viscous sublayer is evaluated. The skin. friction coefficient is computed, and the analytical expression of the turbulent viscosity. coefficient is provided.. The validity of the proposed model is verified with reference to the velocity distributions,. available in the literature, obtained with Direct Numerical Simulation (DNS) of Navier–. Stokes’ equations."