Sfoglia per Soggetto "Turbulent flow"
Items 1-12 di 12
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A comparative study of numerical schemes and turbulence models for wind turbine aerodynamics modelling
(2004)This paper is a comparative study of combining turbulence models and interpolation schemes to calculate turbulent flow around a NACA0012 airfoil before and after separation. The calculations were carried out using the code ... -
The Different Impact of a Half-Separated Gravel and Vegetated Bed in Open Channels
(2015)This paper investigates the different impact of a half-separated gravel and vegetated bed in open channels. This experimental investigation is based on the 2D Particle Image Velocimetry (PIV) method, which allows data ... -
Direct numerical simulation of particle-laden turbulent channel flows with two- and four-way coupling effects: Models of terms in the Reynolds stress budgets
(2017)In the first part of this study (Dritselis 2016 Fluid Dyn. Res. 48 015507), the Reynolds stress budgets were evaluated through point-particle direct numerical simulations (pp-DNSs) for the particle-laden turbulent flow in ... -
Effects of different porous beds on turbulent characteristics in an open channel above the porous bed
(2017)An analysis of the turbulent characteristics of the flow in an open channel with horizontal porous beds using two-dimensional (2D) Particle Image Velocimetry (PIV) is presented. Hydraulic characteristics such as velocity ... -
Experimental and Numerical Study of Turbulent Flow in Open Channels with Impermeable and Porous Bed
(2016)In order to experimentally and numerically investigate turbulent flow in an open channel with porous (vegetated) and impermeable bed 2D Particle Image Velocimetry (PIV) and a Computational Fluid Dynamical (CFD) model were ... -
Microrotation viscosity effect on turbulent micropolar fluid channel flow
(2021)Fluids with an internal rigid microstructure, the so-called micropolar fluids, gain significant attention in many industrial, natural, and biological systems. Here, we study in detail the microrotation viscosity effect on ... -
Numerical modelling and analysis of turbulent flow in an open channel with submerged vegetation
(2017)Turbulent flow in an open channel whose bed is covered with vegetation is studied. Vegetation has been modeled by a series of small diameter rigid cylinders protruded vertically from the channel bed. 3-D computations were ... -
Numerical study of educed coherent structures in the near-wall region of a particle-laden channel flow
(2008)The interaction of small heavy solid particles with turbulence near the wall of a vertical downward channel flow is investigated by using direct numerical simulation (DNS) and Lagrangian particle tracking. The interest is ... -
Numerical study of particle deposition in a turbulent channel flow with transverse roughness elements on one wall
(2017)A numerical study is presented for the effect of wall roughness on the deposition of solid spherical particles in a fully developed turbulent channel flow based on large eddy simulation combined with a Lagrangian ... -
Shear stress estimation in the linear zone over impermeable and permeable beds in open channels
(2015)This paper investigates the shear stresses in the linear zone of open channel flows with permeable and impermeable bed. The permeable bed is simulated using a flexible vegetation of 2 cm thickness. Laboratory experiments ... -
Study of preferential concentration in turbulent flows using combined graph theory and Voronoï analysis
(2022)Collisions between particles in turbulent flows may be enhanced by the formation of clusters due to the preferential concentration effect. However, the internal sub-structure of the clusters remains unclear. This paper ... -
Transition from permeable to impermeable beds and vice versa in open channels: Effects on the velocity distribution of turbulent flow
(2014)This study investigates the impact of permeable to impermeable (and vice versa) bed transition on the velocity distribution of turbulent flow in an open channel. This experimental investigation is based on the 2D Particle ...