Experimental studies of pressure stratification in a rotating flow under gravit

Abstract

Experimental studies of pressure stratification in a vertical swirling water flow under the action of gravity were conducted. The aim of the experiment was to clarify the mechanism of pressure formation in shear flows of a viscous compressible fluid. Within the framework of existing concepts of the development of thermal and hydrodynamic processes based on the Navier–Stokes equations, there are no differences in pressure formation under the action of external mass forces in a moving and stationary medium. However, within the framework of concept of the phonon mechanism of momentum transfer, the effect of body forces differs in a moving and stationary liquid. In this case, pressure and density in a shear flow under gravity would increase more rapidly with increasing depth than in a stationary aquatic environment. This paper provides a theoretical justification for the experiment and describes the layout of the experimental setup and methodology. The results of the study confirmed the phonon mechanism of pressure formation under gravity in an intense water vortex with a vertical axis of rotation.