Experimental assessment of RANS models for wind load estimation over solar-panel arrays

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dc.contributor.author Güemes Jiménez, Alejandro
dc.contributor.author Fajardo Peña, Pablo
dc.contributor.author Raiola, Marco
dc.date.accessioned 2021-10-06T08:21:54Z
dc.date.available 2021-10-06T08:21:54Z
dc.date.issued 2021-03-02
dc.identifier.bibliographicCitation Güemes, A., Fajardo, P. & Raiola, M. (2021). Experimental Assessment of RANS Models for Wind Load Estimation over Solar-Panel Arrays. Applied Sciences, 11(6), 2496.
dc.identifier.issn 2076-3417
dc.identifier.uri http://hdl.handle.net/10016/33371
dc.description This article belongs to the Special Issue Application of Computational Fluid Dynamics in Mechanical Engineering
dc.description.abstract This paper reports a comparison between wind-tunnel measurements and numerical simulations to assess the capabilities of Reynolds-Averaged Navier-Stokes models to estimate the wind load over solar-panel arrays. The free airstream impinging on solar-panel arrays creates a complex separated flow at large Reynolds number, which is severely challenging for the current Reynolds-Averaged Navier-Stokes models. The Reynolds-Averaged Navier-Stokes models compared in this article are k-ϵ, Shear-Stress Transport k-ω, transition and Reynolds Shear Model. Particle Image Velocimetry measurements are performed to investigate the mean flow-velocity and turbulent-kinetic-energy fields. Pressure taps are located in the surface of the solar panel model in order to obtain static pressure measurements. All the Reynolds-Averaged Navier-Stokes models predict accurate average velocity fields when compared with the experimental ones. One of the challenging factor is to predict correctly the thickness of the turbulent wake. In this aspect, Reynolds Shear provides the best results, reproducing the wake shrink observed on the 3rd panel in the experiment. On the other hand, some other features, most notably the blockage encountered by the flow below the panels, are not correctly reproduced by any of the models. The pressure distributions over the 1st panel obtained from the different Reynolds-Averaged Navier-Stokes models show good agreement with the pressure measurements. However, for the rest of the panels Reynolds-Averaged Navier-Stokes fidelity is severely challenged. Overall, the Reynolds Shear model provides the best pressure estimation in terms of pressure difference between the front and back sides of the panels.
dc.description.sponsorship The authors wish to thanks Carlos Cobos for contributing the realisation of the experimental setup and J. Rodríguez for providing the PIV system. The authors acknowledge S. Discetti and A. Ianiro for insightful comments and discussions.
dc.format.extent 14
dc.language.iso eng
dc.publisher MDPI
dc.rights © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.
dc.rights Atribución 3.0 España
dc.rights.uri http://creativecommons.org/licenses/by/3.0/es/
dc.subject.other Computational wind engineering
dc.subject.other RANS
dc.subject.other Solar-panel array
dc.title Experimental assessment of RANS models for wind load estimation over solar-panel arrays
dc.type article
dc.subject.eciencia Ingeniería Mecánica
dc.identifier.doi https://doi.org/10.3390/app11062496
dc.rights.accessRights openAccess
dc.type.version publishedVersion
dc.identifier.publicationfirstpage 2496
dc.identifier.publicationissue 6
dc.identifier.publicationtitle Applied Sciences
dc.identifier.publicationvolume 11
dc.identifier.uxxi AR/0000028308
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