Application of the parabolic equation on the simulation of sound propagation in the atmospheric environment over complex terrain

Plevritis, Athanasios; Πλευρίτης Αθανάσιος

dc.contributor.author	Plevritis, Athanasios	en
dc.contributor.author	Πλευρίτης Αθανάσιος	el
dc.date.accessioned	2023-12-28T10:09:17Z
dc.date.available	2023-12-28T10:09:17Z
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/58485
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.26181
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ελλάδα	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/gr/	*
dc.subject	Ακουστική της Ατμόσφαιρας	el
dc.subject	Παραβολική Εξίσωση	el
dc.subject	Υπολογιστική Ακουστική	el
dc.subject	Σύνθετη Τοπογραφία	el
dc.subject	Ατμοσφαιρική Τύρβη	el
dc.subject	Atmospheric Turbulence	en
dc.subject	Computational Acoustics	en
dc.subject	Atmospheric Acoustics	en
dc.subject	Parabolic Equation	en
dc.subject	Irregular terrain	en
dc.title	Application of the parabolic equation on the simulation of sound propagation in the atmospheric environment over complex terrain	en
heal.type	bachelorThesis
heal.classification	Computational Atmospheric Acoustics	en
heal.language	en
heal.access	free
heal.recordProvider	ntua	el
heal.publicationDate	2023-07-19
heal.abstract	Noise pollution is an increasingly significant issue with detrimental effects on both biodiversity and human health. Transportation systems, construction sites and industrial machinery are some pertinent examples that contribute to excessive noise levels. To address these issues, there is a growing need for environmentally friendly designs in noise-generating facilities that aim to mitigate the harmful effects of noise pollution on human well-being and the natural environment. The current study incorporates the effects of irregular terrain and atmospheric turbulence in sound propagation. A fast Generalized Terrain Parabolic Equation (GTPE) model is developed, which utilizes a grid transformation that creates a fitted computational mesh for any terrain geometry that does not exceed the inclination limit of 30o. Also, this model incorporates atmospheric turbulence using the refractive-index fluctuation function, which introduced into the solution the temperature and wind velocity fluctuations that characterize the turbulent atmosphere. The developed GTPE model is applied on sound propagation over hills in non-turbulent atmosphere, and the comparison shows good agreement with the results of other models. The effect of a more realistic flow field, obtained from the solution of Navier-Stokes equations, is assessed. Application on sound propagation in turbulent atmosphere over flat terrain exhibits good agreement against measurements and predictions of other models.	en
heal.advisorName	Riziotis, Vasilis	en
heal.advisorName	Prospathopoulos, Ioannis	en
heal.committeeMemberName	Riziotis, Vasilis	en
heal.committeeMemberName	Voutsinas, Spyridon	en
heal.committeeMemberName	Giannakoglou, Kyriakos	en
heal.academicPublisher	Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Μηχανολόγων Μηχανικών	el
heal.academicPublisherID	ntua
heal.numberOfPages	59 σ.	el
heal.fullTextAvailability	false