Hydrodynamic and Rheological Behaviour of a Dilatant Fluid through a Rotating Cylinder

The present study investigates numerically a fully developed turbulent flow of shear-thickening fluids through an isothermal axially rotating pipe by means of the large eddy simulation (LES) approach with an extended Smagorinsky model at simulation Reynolds numbers of 4500 and simulation Prandtl number of 1 over a rotation rate range. The emerging results suggest that the centrifugal force induced by the swirl driven by the rotating pipe wall causes a pronounced decrease in the shear rate profile of the dilatant fluid along the pipe radius, resulting in a marked increase in the axial velocity profile in the logarithmic region; this trend is more pronounced as the rotation rate increases.