Laminar flow exists only at relatively small Reynolds numbers. As the Reynolds number increases, the laminar regime of flow transients in turbulent flow. The laminar flow is well organized so that it looks like thin parallel layers (lamina in Greek means plate or layer) of fluid move unmixed along a pipe or a plate. In contrast to that, the mixing process inside a fluid leading to homogeneous disturbed medium is one of the basic characteristics of turbulent flow. The patterns of these two regimes were first observed by Reynolds in the nineteenth century, who put the dye inside the flow...