چكيده لاتين :
A simple example in fluid dynamics is presented to show the important
role of the law of increase of entropy in the dynamics. In a stationary 3-D viscous
flow with negligible thermal conduction, the Lyapunov method is employed to
obtain the fluid velocity "without" solving the equation of motion. This flow which
is given around the point of maximum entropy consists of some closed orbits lying
simultaneously on both surfaces of constant entropy and spherical surfaces centered
at that point. Also the flow near to this stable point must be incompressible and nonviscous.
