The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper presents the wind turbine emulator using the wind turbine model based on blade element momentum theory. The lift coefficient cl and drag coefficient cd of designed blade shape are calculated with the fluid analysis. Therefore the proposed wind turbine emulator can emulate the new designed windmill without manufacturing. Also the wind turbine model considers the mechanical model and the...
The two-dimensional incompressible Navier-Stokes equations and the SST k-?? turbulence model are used to investigate the aerodynamic performance of a wind turbine airfoil under clean and rough surface conditions. The DU 95-W-180 airfoil is analysized, which is widely used in wind turbines. The numerical simulation of the airfoil under clean surface condition is performed, and the numerical results...
The laminar-to-turbulent transition is one of the most complex but important flows. In order to deeply apprehend the wind turbine airfoil flow characteristics and the transition phenomenon, a two-equation transition model is applied in this article to simulate the flow over a wind turbine S814 airfoil. Typical angle of attack and both steady and unsteady transition models are tried. The predictions...
Reynolds number has a direct impact on the performance of a wind turbine aerofoil. In this paper, the airfoil NREL S809 was chosen for the research, using numerical simulation and experiment for the performance of the two-dimensional aerodynamic airfoil flow. While Reynolds number varies from 1.5times104 to 2times105, both the drag coefficient and the lift coefficient have great changes. However,...
The 2-D airfoil of the wind turbine (NREL S809) was experimentally and numerically studied. The experiment focused on the PIV measurement of the 2-D airfoil flow field with different angles of attack under various Reynolds numbers. A lot of important and useful information was obtained. Furthermore, the experimental result was compared with CFD simulation in order to study the flow field in more detail,...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.