The generated deterministic vortex structures in the boundary layers can lead not only to a change in the dynamic characteristics of streamlined surfaces, but to a significant change in heat transfer on such surfaces. The shape, scale and intensity of such structures, their stability in near-wall flows are the object of this research. The subject of this research is to determine the influence of the longitudinal vortex parameters on the characteristics of the heat and dynamic boundary layers on the streamlined surface in a given range of Reynolds and Prandtl numbers. Having determined the parameters of the longitudinal vortex that are most influential on the characteristics of the boundary layers, we can proceed to the next step - solving the problem of its generation by elements of the structured surface with minimal hydrodynamic losses. These results are essential for creating the geometry of structured surfaces, with the effective closeness of its elements to increase the intensity of heat transfer.