Three-dimensional mathematical modeling of fish behaviour in water bodies

Δηλές, Σταύρος; Diles, Stavros

dc.contributor.author	Δηλές, Σταύρος	el
dc.contributor.author	Diles, Stavros	en
dc.date.accessioned	2018-03-15T11:18:06Z
dc.date.available	2018-03-15T11:18:06Z
dc.date.issued	2018-03-15
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/46712
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.7682
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	Fish behaviour	en
dc.subject	Ηydroelectric	en
dc.subject	ELAM method	en
dc.subject	Μodeling	en
dc.subject	Συμπεριφορά των ψαριών	el
dc.subject	μοντέλο	el
dc.subject	Ρευστομηχανική	el
dc.subject	οικολογικό	el
dc.subject	Μέθοδος ELAM	en
dc.title	Three-dimensional mathematical modeling of fish behaviour in water bodies	en
heal.type	masterThesis
heal.classification	Υπολογιστική Μηχανική	el
heal.language	en
heal.access	free
heal.recordProvider	ntua	el
heal.publicationDate	2017-11-06
heal.abstract	Human intervention in rivers and its effect on fish populations made it necessary to further understand fish behavior in order to reduce the impact on their living. This effort has led to construction and continuous improvement of fish passes in dams and Hydroelectric Power Plants. The aim of the current work is to use the existing literature and extend the mathematical- computational model which simulates fish behavior in three-dimensional flow conditions. The model was created in the Laboratory of Applied Hydraulics in NTUA by Giannoulis and Pagonopoulos. The study of fish behaviour is based on the ELAM method, which consists of the Eulerian approach of the flow field using Computational Fluid Dynamics (CFD) software, the Lagrangian approach of fish movement and the approach of fish response to the direction of flow and the stimuli of spatial acceleration and pressure. The main types of fish behaviour that are distinguished are (1) B1 towards flow direction , (2) B2 towards increasing water velocity, (3) B3 against the flow, and (4) B4 towards acclimatized derth. The calibration of the model was based on the case study of TUM Hydro Shaft Power Plant at the Hydraulic Laboratory in Obernach, Germany. The Flow-3D hydrodynamic model was applied for the description of the flowfield. A sensitivity analysis was performed on the model threshold coefficients and fish length.	en
heal.advisorName	Στάμου, Αναστάσιος	el
heal.committeeMemberName	Μπουντουβής, Ανδρέας	el
heal.committeeMemberName	Ριζιώτης, Βασίλειος	el
heal.committeeMemberName	Στάμου, Αναστάσιος	el
heal.academicPublisher	Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Πολιτικών Μηχανικών	el
heal.academicPublisherID	ntua
heal.numberOfPages	54 σ.	el
heal.fullTextAvailability	true