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research-article

Benchmark of a Novel Aero-Elastic Simulation Code for Small Scale VAWT Analysis

[+] Author and Article Information
David Marten

Christian Oliver Paschereit, Chair of Fluid Dynamics, HFI, TU Berlin, Müller Breslau Strasse 8, 10623, Berlin, Germany
david.marten@tu-berlin.de

Matthew Lennie

Christian Oliver Paschereit, Chair of Fluid Dynamics, HFI, TU Berlin, Müller Breslau Strasse 8, 10623, Berlin, Germany
matthew.lennie@tu-berlin.de

Georgios Pechlivanoglou

Christian Oliver Paschereit, Chair of Fluid Dynamics, HFI, TU Berlin, Müller Breslau Strasse 8, 10623, Berlin, Germany
george@pechlivanoglou.com

Christian Oliver Paschereit

Christian Oliver Paschereit, Chair of Fluid Dynamics, HFI, TU Berlin, Müller Breslau Strasse 8, 10623, Berlin, Germany
oliver.paschereit@tu-berlin.de

Alessandro Bianchini

Department of Industrial Engineering, Università degli Studi di Firenze, Via di Santa Marta 3, 50139, Firenze, Italy
bianchini@vega.de.unifi.it

Giovanni Ferrara

Department of Industrial Engineering, Università degli Studi di Firenze, Via di Santa Marta 3, 50139, Firenze, Italy
ferrara@vega.de.unifi.it

Lorenzo Ferrari

DESTEC, Università di Pisa, Largo Lucio Lazzarino, 56122, Pisa, Italy
lorenzo.ferrari@unipi.it

1Corresponding author.

ASME doi:10.1115/1.4041519 History: Received July 13, 2018; Revised August 31, 2018

Abstract

After almost 20 years of absence from research agendas, interest in the vertical axis wind turbine (VAWT) technology is presently increasing again, after the research stalled in the mid 90's in favour of horizontal axis turbines (HAWTs). However, due to the lack of research in past years, there are a significantly lower number of design and certification tools available, many of which are underdeveloped if compared to the corresponding tools for HAWTs. To partially fulfil this gap, a structural FEA model, based on the Open Source multiphysics library PROJECT::CHRONO, was recently integrated with the Lifting Line Free Vortex Wake method inside the Open Source wind turbine simulation code QBlade and validated against numerical and experimental data of the SANDIA 34m rotor. In this work some details about the newly implemented nonlinear structural model and its coupling to the aerodynamic solver are first given. Then, in a continuous effort to assess its accuracy, the code capabilities were here tested on a small scale, fast-spinning (up to 450 rpm) VAWT. After the code validation, an aero-elastically coupled simulation of a rotor self-start has been performed to demonstrate the capabilities of the newly developed model to predict the highly nonlinear transient aerodynamic and structural rotor response.

Copyright (c) 2018 by ASME
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