Προσομοίωση ροής γύρω από συστοιχία φωτοβολταϊκών συλλεκτών

Τζέκος, Παναγιώτης; Tzekos, Panagiotis

dc.contributor.author	Τζέκος, Παναγιώτης	el
dc.contributor.author	Tzekos, Panagiotis	en
dc.date.accessioned	2024-07-11T06:27:27Z
dc.date.available	2024-07-11T06:27:27Z
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/59847
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.27543
dc.description	Εθνικό Μετσόβιο Πολυτεχνείο--Μεταπτυχιακή Εργασία. Διεπιστημονικό-Διατμηματικό Πρόγραμμα Μεταπτυχιακών Σπουδών (Δ.Π.Μ.Σ.) “Υπολογιστική Μηχανική”	el
dc.rights	Default License
dc.subject	Solar panels	en
dc.subject	Array	en
dc.subject	Ground mounted	en
dc.subject	Wind load	en
dc.subject	RANS	en
dc.subject	k-ε RNG	en
dc.subject	k-ω SST	en
dc.title	Προσομοίωση ροής γύρω από συστοιχία φωτοβολταϊκών συλλεκτών	el
heal.type	masterThesis
heal.classification	Computational Fluid Dynamics	en
heal.language	el
heal.access	free
heal.recordProvider	ntua	el
heal.publicationDate	2024-03-27
heal.abstract	Photovoltaic arrays are primarily located in large open fields and often exposed to high wind speeds which result in the development of a complex flow field around them. These conditions cause significant aerodynamic loads which are exerted on the panels. Aerodynamics loads on, and wind flow field around, an array of ten ground mounted solar panels that are placed in an open field, are investigated using a steady state Reynolds-Averaged Navier–Stokes (RANS) approach. A full scale two-dimensional (2D) solver is employed with the Shear Stress Transport (SST) k–ω and Re-Normalisation Group k-ε (RNG) turbulence models. A grid independence study is conducted to ensure the accuracy of a single PV study case. Simulation results for the flow around a PV array are validated using wind tunnel experimental data. The effects of the Reynolds number on the calculation of pressure and force coefficients on the PVs are also investigated. The flow around the PV array is studied, considering the chosen geometric characteristics. A comparative analysis of the two turbulence models (k-ε RNG & k-ω SST) is carried out for both south and north wind directions. Parametric studies are conducted on the distance of the PVs from the ground and the distance between them, respectively. The force coefficient obtained from simulations is compared to that calculated by the Eurocode. The results show that all the trailing rows are in the wake of the leading row. For all the wind directions studied here, the first windward row experiences the maximum wind loads. As the distance from the ground decreases, the forces exerted on the panels also decrease. Also, the results showed that for the smallest distance ratio between the PVs, L/H=2.4, the force coefficient of the second PV exhibits a negative sign. Finally, the values of the force coefficient calculated by the Eurocode seem to overestimate the forces compared to those calculated from the simulations.	en
heal.advisorName	Bouris, Demetri	en
heal.committeeMemberName	Voutsinas, Spyridon	en
heal.committeeMemberName	Manolesos, Marinos	en
heal.academicPublisher	Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Χημικών Μηχανικών	el
heal.academicPublisherID	ntua
heal.numberOfPages	113	el
heal.fullTextAvailability	false