Herein, hydrodynamic analysis from a large-eddy simulation in Couette–Taylor–Poiseuille (CTP) geometry is numerically investigated. The present inspired by previous experimental work which heat transport phenomena were investigated recovery system devoted to rotary kiln facility. streamwise and spanwise components of the velocity Reynolds stress tensor are firstly validated using an benchmark. ...

The talk describes recent progress in understanding the behaviour of the stress tensor and its correlation functions at a critical point of a generic quenched random system. The topics covered include: (i) the stress tensor in random systems considered as deformed pure systems; (ii) correlators of the stress tensor at a random fixed point: expectations from the replica approach and c-theorem su...

In this article, the mechanics of drag reduction on an axisymmetric body revolution by shallow dimples is presented using high-fidelity Reynolds Stress Modeling based simulations. Experimental results evolution from published literature at different numbers are used to validate model predictions. The numerical predictions show good agreement with experimental results. It observed that reduced a...

In this study, a new well-resolved large-eddy simulation of an incompressible near-equilibrium adverse-pressure-gradient (APG) turbulent boundary layer (TBL) over flat plate is presented. simulation, we have established APG wide Reynolds-number range. so-called region interest, the Rotta–Clauser pressure-gradient parameter $\beta$ exhibits approximately constant value around 1.4, and Reynolds n...

Cross correlations of the fluctuating wall-shear stress and the streamwise velocity in the logarithmic region of turbulent boundary layers are reported over 3 orders of magnitude change in Reynolds number. These results are obtained using hot-film and hot-wire anemometry in a wind tunnel facility, and sonic anemometers and a purpose-built wall-shear stress sensor in the near-neutral atmospheric...

This paper presents a way of modelling turbulence in multiphase flows within the context of the Reynolds-Stress Model. The model has been implemented in the general-purpose unstructured finite volume code Fluent V6. Two multiphase turbulence approaches were considered: mixture and dispersed models. The mixture model solves the Reynolds-stress transport equations on the mixture level only. The d...

Volumetric three-component velocimetry measurements have been taken of the flow field near a Rushton turbine in a stirred tank reactor. This particular flow field is highly unsteady and three-dimensional, and is characterized by a strong radial jet, large tank-scale ring vortices, and small-scale blade tip vortices. The experimental technique uses a single camera head with three apertures to ob...

Predicting the behavior of turbulent flows using large-eddy simulation requires a modeling subgrid-scale stress tensor. This tensor can be approximated mixed models, which combine dissipative nature functional models with capability structural to approximate out-of-equilibrium effects. We propose mathematical basis mix (functional) eddy-viscosity (structural) Bardina model. By taking an anisotr...