Publication: Numerical analysis of winglets on wind turbine blades using computational fluid dynamics (CFD)
Date
2015
Authors
Daniel Choon Chin Aunn
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Abstract
This thesis gives a report on the effect of winglets on a wind turbine blade using computational fluid dynamics (CFD) method. The winglet is a device used to reduce wingtip vortices and in turn lower the drag coefficient of a wing. In this case, the wing is a wind turbine blade and the same aerodynamic rules apply. A wind turbine blade is fitted with winglets of different geometry properties namely the cant angle. Cant angles of increasing values are used to generate desired three-dimensional models that have different cant angles. The models are then exported to the computational solver. In the solver the desired boundary conditions are used to set up the simulation. The solver, ANSYS Fluent, then uses this models along with the boundary conditions to compute the desired output. The results can be seen in graphs from the program. The results are then compared with results obtained from previous studies to show that the trend is the same where larger cant angles generally reduce the drag coefficient.
Description
TJ828.D36 2015
Keywords
Wind turbines