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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Saverin, Joseph Marten, David Pechlivanoglou, George Paschereit, Christian Oliver Persico, Giacomo Dossena, Vincenzo |
| Copyright Year | 2018 |
| Abstract | A recently formulated model for the treatment of the evolution of the wake of aerodynamic bodies has been implemented into the wind turbine simulation software QBlade with the aim of modelling near and far wake behavior with a so-called medium order model. The paper first presents the vortex particle treatment of the wake. Shed and trailing vortex elements generated by a lifting line model of the turbine blade are allowed to freely convect under the action of the freestream, body and wake influence. Induced velocities are calculated with use of a regularized Biot-Savart kernel. The method is validated against experiments carried out in the large-scale wind tunnel of the Politecnico di Milano on a H-type turbine architecture. Wake velocities and periodic unsteadiness are predicted relatively well by the method for two tip speed ratios. It is observed that higher order effects such as vortex stretching and viscous interaction must be implemented into the model in order to accurately predict wake evolution. A recently developed vortex particle multilevel multi-integration method has been implemented which approximates the far-field influence of the particles and reduces significantly the computational expense. The paper also reports on the implementation of higher order effects into this optimization framework to account for evolution of vortex particle strength and the inclusion of viscous effects into the model, which are shown to be particularly relevant for vertical axis wind turbines. |
| Sponsorship | International Gas Turbine Institute |
| File Format | |
| ISBN | 9780791851180 |
| DOI | 10.1115/GT2018-76575 |
| Volume Number | Volume 9: Oil and Gas Applications; Supercritical CO2 Power Cycles; Wind Energy |
| Conference Proceedings | ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition |
| Language | English |
| Publisher Date | 2018-06-11 |
| Publisher Place | Oslo, Norway |
| Access Restriction | Subscribed |
| Subject Keyword | Turbine blades Wind tunnels Computer software Wake turbulence Modeling Optimization Vertical axis wind turbines Simulation Particulate matter Vortices Wakes Wind turbines Turbines |
| Content Type | Text |
| Resource Type | Article |
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