| This paper is a result of work along the line pointed out by ChenTian Quan. Namely, the motion of the incompressible macroscopic turbulent f-low is discussed in this article. First, the process of deriving the motion of the turbulent flow from the BBGGKY hierarchy is introduced briefly; Se-cond, we use the method of separation of variables on the double correla-tions so as to simplify the fluctuation equation; Next, in terms of the squ-ire transformation, the three-dimensional disturbance is reduced to two-dimensional problem, and the double correlations is expressed by the str-eam function; Finally, the pressure is given from substituting the double correlations to the average equation. |