Articles of The Transactions of KSRC

Full text article (in russian)

Year	2016
Issue	376
Volume	2
Pages	59–92
Caption	Physical nature of frictional resistance reduction in dilute polymer solutions in turbulent boundary layer flows
Authors	O. Orlov
Keywords	turbulent boundary layer, laminar sublayer, polymer solution, shear stress, Newtonian fluid, transverse vortices in viscous sublayer, globules of polymer’s macromolecules
Summary	Originally, the frictional resistance of surface in polymer solution flow is reduced due to attachment of macromolecules to the surface changing the physical conditions of nonstationary flows generation in viscous sublayer. After the attachment, the macromolecules become a substance with dual physical nature: on the one hand, it is a new elastic part of wetted surface, on the other hand, it is an element of fluid medium. The macromolecules at the surface interact with flow in viscous sublayer at fluid-solid interface. This interaction is decreasing the resistance. All subsequent changes of flow in polymer solutions boundary layer occur due to reduction of shear stresses at the surface following the laws of semi-empirical theory of Newtonian fluid boundary layer.
Rubrics	Naval architecture