Influence of turbulent flow formation conditions on coherent structures and velocity pulsations

Turbulent flows of viscous incompressible fluid in a spherical layer are numerically investigated. Two ways of flow formation are considered: sequential and simultaneous increase of the counter-rotation velocity of spherical boundaries from the resting state. It is found that at equal Reynolds numbers, but different ways of flow formation, types of spatial coherent structures, levels of velocity pulsations and their spectra differ.