Turbulent flow in the center section of a channel

Possibilities for the determination of the characteristics of an incompressible turbulent flow are examined, taking into account an approach proposed by Mellor and Herring (1973) to overcome fundamental difficulties related to the insufficient number of equations in the basic system of equations. The use of a system with 10 equations for the 10 basic functions in the case of a specific turbulent flow problem is considered, taking into account the case of a planar channel flow. The justification of an application of certain hypotheses employed by Mellor and Herring in the case of flow areas near the wall does not appear assured. The obtained system of differential equations is, therefore, only solved for the central section of the channel.