A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Numerical study of the wake induced by a porous disk under deflected inflow
This study examines the wake of a porous disk that generates a velocity deficit equivalent to that of a wind turbine. Three‐dimensional unsteady numerical simulations based on the finite volume method are performed. The URANS‐SST (k–ω) model is applied for the turbulence closure. Two investigations are carried out in this study: (i) the influence of the disk porosity on the wake, for porosities values (p) ranging from 0 to 0.55 in the case of a perpendicular flow; and (ii) the influence of the yaw angle on the wake deviation, for yaw angles ranging from 5° to 30°. Good agreements with the available experimental data are obtained for the mean x‐velocity component. The results confirm that wake length increases as porosity decreases. For nonporous disks, most part of the fluid is deflected toward the mast and above the disk. The y‐velocity contours highlight two contra‐rotating vortices in the vicinity of the disk. In both cases (nonporous and porous disks), a high turbulent kinetic energy is obtained near the disk area, with a higher maximum value for the nonporous disk.
Numerical study of the wake induced by a porous disk under deflected inflow
This study examines the wake of a porous disk that generates a velocity deficit equivalent to that of a wind turbine. Three‐dimensional unsteady numerical simulations based on the finite volume method are performed. The URANS‐SST (k–ω) model is applied for the turbulence closure. Two investigations are carried out in this study: (i) the influence of the disk porosity on the wake, for porosities values (p) ranging from 0 to 0.55 in the case of a perpendicular flow; and (ii) the influence of the yaw angle on the wake deviation, for yaw angles ranging from 5° to 30°. Good agreements with the available experimental data are obtained for the mean x‐velocity component. The results confirm that wake length increases as porosity decreases. For nonporous disks, most part of the fluid is deflected toward the mast and above the disk. The y‐velocity contours highlight two contra‐rotating vortices in the vicinity of the disk. In both cases (nonporous and porous disks), a high turbulent kinetic energy is obtained near the disk area, with a higher maximum value for the nonporous disk.
Numerical study of the wake induced by a porous disk under deflected inflow
Guezmir, Sihème (author) / Mataoui, Amina (author) / Guerri, Ouahiba (author)
Heat Transfer ; 51 ; 4102-4122
2022-07-01
21 pages
Article (Journal)
Electronic Resource
English
CFD , wake , yaw angle , wind turbine modeling , porosity
Effects of inflow boundary layer on the wake of a radially non-uniform porous disk
| American Institute of Physics | 2021
Determination of the Deflected Mode of the Disk
| TIBKAT | 2021
Determination of the Deflected Mode of the Disk
| Springer Verlag | 2021
Wake structure in actuator disk models of wind turbines in yaw under uniform inflow conditions
| American Institute of Physics | 2016
| Engineering Index Backfile | 1959