Flow structures in the turbulent wake of a cross-flow wind turbine

Ramos Casado, Gema and Beltrán Martínez, Víctor and Le Clainche Martinez, Soledad and Ferrer, Esteban and Vega de Prada, J.M. (2018). Flow structures in the turbulent wake of a cross-flow wind turbine. In: "AIAA SciTech Forum. 2018 Wind Energy Symposium", 8-12 Jan, Kissimmee, Florida. ISBN 978-1-62410-609-5. https://doi.org/10.2514/6.2018-0253.

Description

Title: Flow structures in the turbulent wake of a cross-flow wind turbine
Author/s:
  • Ramos Casado, Gema
  • Beltrán Martínez, Víctor
  • Le Clainche Martinez, Soledad
  • Ferrer, Esteban
  • Vega de Prada, J.M.
Item Type: Presentation at Congress or Conference (Article)
Event Title: AIAA SciTech Forum. 2018 Wind Energy Symposium
Event Dates: 8-12 Jan
Event Location: Kissimmee, Florida
Title of Book: AIAA Scitech 2021 Forum
Date: January 2018
ISBN: 978-1-62410-609-5
Subjects:
Faculty: E.T.S. de Ingeniería Aeronáutica y del Espacio (UPM)
Department: Matemática Aplicada a la Ingeniería Aeroespacial
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

This article presents a description of the spatio-temporal flow structures found behind a cross-flow wind turbine under turbulent flow conditions. Higher order dynamic mode decomposition (HODMD) is applied to analyze both, the wake and the rotating area near the blades when simulated using a high order discontinuous Galerkin method with sliding meshes. The analysis of the flow velocities shows a marked asymmetry of the wake. This phenomenon is illustrated by the statistical analysis provided by a Reynolds decomposition and backed up through the dynamic mode analysis. Additionally, the results show that the flow is composed by a mode whose fundamental frequency is the frequency of rotation of the wind turbine and its harmonics. This fundamental frequency can be related to a traveling wave, moving in the streamwise direction of the flow.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainTRA2016-75075-RUnspecifiedUnspecifiedGeneración eficiente y postproceso de bases de datos aeronáuticas

More information

Item ID: 54695
DC Identifier: https://oa.upm.es/54695/
OAI Identifier: oai:oa.upm.es:54695
DOI: 10.2514/6.2018-0253
Official URL: https://arc.aiaa.org/doi/book/10.2514/MSCITECH21
Deposited by: Memoria Investigacion
Deposited on: 05 Feb 2021 11:08
Last Modified: 05 Feb 2021 11:08
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