Aerodynamic Shape Optimization of a Vertical-Axis Wind Turbine Using Differential Evolution

2014 ◽  
pp. 79-121
Author(s):  
Travis Carrigan ◽  
Brian Dennis ◽  
Zhen Han ◽  
Bo Wang
Keyword(s):  
Shape Optimization ◽  
Differential Evolution ◽  
Wind Turbine ◽  
Vertical Axis ◽  
Aerodynamic Shape Optimization ◽  
Vertical Axis Wind Turbine ◽  
Aerodynamic Shape

Aerodynamic Shape Optimization of Diffuser Augmented Wind Turbine Shrouds Using Asynchronous Differential Evolution

2018 ◽  
Author(s):  
Stavros N. Leloudas ◽  
Georgios N. Lygidakis ◽  
Giorgos A. Strofylas ◽  
Ioannis K. Nikolos
Keyword(s):  
Shape Optimization ◽  
Differential Evolution ◽  
Wind Turbine ◽  
Stokes Equations ◽  
Free Form ◽  
Finite Volume Scheme ◽  
Computational Domain ◽  
Aerodynamic Shape Optimization ◽  
Aerodynamic Shape ◽  
De Algorithm

An adaptable numerical scheme for the aerodynamic shape optimization of axisymmetric diffuser-augmented wind turbine shrouds is demonstrated in this work, using an asynchronous and parallel version of a Differential Evolution (DE) algorithm. The simulation of the incompressible flow field about each candidate geometry is succeeded by means of an in-house Computational Fluid Dynamics (CFD) solver, that has been developed based on the specially modified, by the artificial compressibility approach, Navier-Stokes equations, expressed in non-dimensional form, for 2D-axisymmetric frames of reference. The discretization of the computational domain is made with 2D hybrid unstructured meshes, composed by both triangular and quadrilateral elements, combined with a node-centered finite-volume scheme, while the Free-Form Deformation (FFD) technique is applied, for both the parameterization of the design geometry and the morphing of the computational mesh. The required data transfer between the DE algorithm and the CFD solver is accomplished with appropriate text files, while the parallel implementation is achieved utilizing the Message Passing Interface (MPI) library functions. Further acceleration of the optimization procedure is succeeded by the combination of the DE with surrogate models, in order to replace the costly CFD-based evaluations of the candidate solutions with fast, but approximate estimations of their cost function.

Concept of flexible vertical-axis wind turbine with numerical simulation and shape optimization

Energy ◽  
2019 ◽  
Vol 167 ◽  
pp. 841-852 ◽  
Author(s):  
Ivo Marinić-Kragić ◽  
Damir Vučina ◽  
Zoran Milas
Keyword(s):  
Numerical Simulation ◽  
Shape Optimization ◽  
Wind Turbine ◽  
Vertical Axis ◽  
Vertical Axis Wind Turbine
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