SELF-SIMILAR DEGENERATION OF THE TURBULENT WAKE BEHIND A BODY TOWED IN A PASSIVELY STRATIFIED MEDIUM

摘要

A mathematical model of the far turbulent wake behind a towed body in a passively stratified medium, based on the known semi-empirical e-ε model of turbulence, is considered. A group-theoretical analysis of the model is performed. With the help of the method of B-detennining equations, the model is reduced to a system of ordinary differential equations, which is solved numerically. The resultant solution is compared with a self-similar solution obtained by direct numerical integration of the differential equations at large distances from the body.