LES of Turbulence Features of Turbulent Forced Convection of Dilatant Fluid in an Axially Rotating Pipe

The present study seeks to shed further light on the laminarisation phenomena of the dilatant fluid by critically analysing the effect of the centrifugal force induced by the swirl driven by the rotating pipe wall on the thermal quantities. The present investigation also aims to ascertain the accuracy and the reliability of the laboratory code predicted findings and to examine the large eddy simulation approach effectiveness for predicting the turbulent flow of this kind of fluids. In addition to knowing to what extent the extended Smagorinsky model can characterise the scale’s motions, especially in the wall vicinity. The emerged findings suggest that the centrifugal force induced by the rotating pipe wall results in a noticeable amelioration of the temperature fluctuations out of the viscous sub-layer. In other words, the swirl driven by the rotating pipe wall results in a pronounced enhancement in the generation and transport of the turbulence intensities of the temperature fluctuations. This trend is more pronounced as the rotation rate increases.