Design and performance evaluation of a semi-circular breakwater using cmputational fluid dynamics (CFD)

Καλαντζή,Βαρβάρα; Kalantzi, Varvara

dc.contributor.author	Καλαντζή,Βαρβάρα	el
dc.contributor.author	Kalantzi, Varvara	en
dc.date.accessioned	2025-04-02T06:24:14Z
dc.date.available	2025-04-02T06:24:14Z
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/61558
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.29254
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	Semicircular breakwater	en
dc.subject	Waves	en
dc.subject	Turbulence	en
dc.subject	CFD	en
dc.title	Design and performance evaluation of a semi-circular breakwater using cmputational fluid dynamics (CFD)	en
heal.type	masterThesis
heal.classification	Computational engineering	en
heal.language	en
heal.access	free
heal.recordProvider	ntua	el
heal.publicationDate	2024-10-10
heal.abstract	The protection of coasts and coastline equipment from the sea and the power of the waves is a perennial need and because of this, engineering seeks ways to make the breakwaters more efficient and economical. In recent years, many studies have leaned towards semicircular breakwaters as they combine many advantages including their low cost and ease of construction. CFD analysis plays an important role in predicting the interaction between the breakwater and the wave, facilitating the construction of the breakwater. In the present thesis, the flow of several waves is studied inside an open channel domain with a perforated semicircular breakwater. Right after the model set up, a grid independence study as well as a turbulence model study are performed. From this analysis, a medium grid of around 1,200,000 cells is chosen as the best for this work considering both the accuracy and the computational cost. As far as the turbulence model is concerned, SST k-omega model is selected for further analysis as it combines the advantages of other models when it comes to complicated flows. Several wave scenarios are introduced and the results of pressure, velocity, turbulence kinetic energy, eddy dissipation and other parameters are obtained from this study. Specifically, the results are presented in the form of plots (i.e. pressure, velocity), contours, streamlines etc. In general, although the results vary depending on the wave characteristics, the breakwater reduces the force of the waves downstream of it, making it efficient and reliable for such applications.	en
heal.advisorName	Markatos, Nikolaos	en
heal.committeeMemberName	Riziotis, Vasilis	en
heal.committeeMemberName	Lyridis, Dimitrios V.	en
heal.academicPublisher	Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Χημικών Μηχανικών	el
heal.academicPublisherID	ntua
heal.fullTextAvailability	false