The Reynolds Stress Model (RSM) is adopted to simulate the wind turbine wake and the simulation results are compared with the wind tunnel test data, simulation results from the standard k-ε model and a modified k-ε model. RSM shows good performance in predicting the turbine wakes velocity, turbulence intensity and the kinetic shear stress, while the k-ε based models fail to predict either wakes...

– Numerical simulation of hydrocyclones aiming at investigating the separation of microorganisms and mammalian cells was performed using Computational Fluid Dynamics (CFD). The turbulence model used in the 2daxisymmetric calculations was the Reynolds Stress Model (RSM), in order to take into account the high swirl effects that occur in this type of equipment, which induce anisotropic turbulence...

Flows around an axisymmetric body of revolution at a zero yaw angle were studied using hybrid Reynolds-averaged Navier–Stokes (RANS)/large eddy simulation (LES) approach, which employed full Reynolds stress model (RSM) in the RANS branch with aim accounting for anisotropy, streamline curvature, and flow separations boundary layer. The SUBOFF without appendages was applied to conduct simulations...

Gravity-driven separators are broadly used in various engineering applications to remove particulate matters from gaseous fluids meet legislation demands. This study represents a detailed numerical investigation of two-phase cyclone separator using the Eulerian–Lagrangian gas flow method. The turbulence is modelled Reynolds stress model (RSM). technique has successfully predicted typical trends...

The extensive use of vertical piles as basic components coastal structures, e.g. monopile wind turbine foundations, has made the study wave impact on cylindrical structures in breaking zone major practical importance. To investigate forces a cylinder located sloped bed, Reynolds-averaged Navier–Stokes equations (RANS) based turbulence models have been used closure most recent computational flui...

This study has primarily aimed at the examination of the effect of flow rate, solid volume fraction and their interactions on the Nusselt number of Al2O3/water nanofluids. To investigate the main and interaction effects on the response, Response Surface Methodology (RSM) has been used based on the miscellaneous design. By using the analysis of variance (ANOVA) the signi...

In this paper, we investigate the capabilities of unsteady Reynolds-averaged Navier–Stokes (URANS) equations for capturing helical structures found in a three-dimensional, incompressible and isothermal annular swirling jet undergoing vortex breakdown. The flow topology is representative bluff-body combustor operating at Reynolds number Re = 8500 swirl S 0.39. As turbulence model, SSG stress mod...

UNLABELLED Accurate prediction of ventilation flow is of primary importance for designing a healthy, comfortable, and energy-efficient indoor environment. Since the 1970s, the use of computational fluid dynamics (CFD) has increased tremendously, and nowadays, it is one of the primary methods to assess ventilation flow in buildings. The most commonly used numerical approach consists of solving t...

A swirling pulverized coal flame is computationally investigated. Eulerian–Lagrangian formulation used to describe the two-phase flow. Turbulence modelled within a RANS (Reynolds averaged numerical simulation) framework. Four turbulence viscosity- (TV) based models, namely standard k-ε model, realizable renormalization group theory and shear stress transport k-ω model are used. In addition, Rey...