Πειραματική διερεύνηση του σχήματος μεσόβαθρου στα χαρακτηριστικά της τυρβώδους ροής σε ορθογωνική διώρυγα

Νάρης, Νικόλαος; Naris, Nikolaos

dc.contributor.author	Νάρης, Νικόλαος	el
dc.contributor.author	Naris, Nikolaos	en
dc.date.accessioned	2022-02-01T11:41:05Z
dc.date.available	2022-02-01T11:41:05Z
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/54505
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.22203
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	Turbulence	en
dc.subject	River	en
dc.subject	Bridge	en
dc.subject	Shape	en
dc.subject	Canal	en
dc.subject	Τύρβη	el
dc.subject	Γέφυρα	el
dc.subject	Διώρυγα	el
dc.subject	Ποτάμι	el
dc.title	Πειραματική διερεύνηση του σχήματος μεσόβαθρου στα χαρακτηριστικά της τυρβώδους ροής σε ορθογωνική διώρυγα	el
dc.title	Πειραματική διερεύνησ της επίδρασης του σχήματος μεσόβαθρου στα χαρακτηριστικά της τυρβώδους ροής σε ορθογωνική διώρυγα	el
heal.type	bachelorThesis
heal.classification	Hydraulics Mechanics	el
heal.language	el
heal.access	free
heal.recordProvider	ntua	el
heal.publicationDate	2021-10-30
heal.abstract	Nowadays, with the advancement of technology and engineering, it is possible to connect more and more land and water surfaces through bridges around the world. Due to the existence of bridge piers in water elements, especially in watercourses, it is possible that a number of problems can be caused mainly due to the change of the hydrodynamic characteristics of the flow. In the present work, five different cross-sections of intermediate shapes of different shapes are simulated and the measurements of the flow velocity were taken at four specific depths and at four specific positions, one upstream and three downstream, of the intermediate platform. The measurements were made with the ADV instrument (Acoustic Doppler Velocimeter) under hypocritical and constant flow conditions using a constant flow throughout the experiment. The distribution of the velocities, the intensity of the turbulence and the turbulent tendencies mainly downstream of the intermediate stages were studied as there arise any problems created by the change of these characteristics. The forces and coefficients of resistance were also studied. All diagrams are in dimensionless format for easy extraction and comparison of results. By presenting these diagrams, an attempt is made to draw conclusions about how the different barrier shapes hinder the flow and its characteristic	en
heal.advisorName	Papanicolaou, Panayiotis	en
heal.committeeMemberName	Efstratiadis, Papakwnstantis	en
heal.academicPublisher	Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Πολιτικών Μηχανικών. Τομέας Υδατικών Πόρων και Περιβάλλοντος	el
heal.academicPublisherID	ntua
heal.numberOfPages	181 σ.	el
heal.fullTextAvailability	false