Uporaba generatorja valov za določanje lastnosti in dosega valov na nagnjeni obali : magistrsko delo

Čehovin, Jerneja (author), Žagar, Dušan (mentor), Novak, Gorazd (comentor)

V nalogi obravnavamo uporabo generatorja valov v laboratorijskem kanalu. V teoretičnem delu smo prikazali splošne lastnosti valov, lastnosti posameznih tipov valovnih profilov in dve empirični metodi za izračun dosega valov na nagnjeni obali. Prikazana je metodologija hidravličnega modeliranja valov in različne vrste generatorjev valov. Podrobneje je predstavljena vsa uporabljena laboratorijska oprema in postopek izvajanja meritev. Izvedli smo tri vrste poskusov, kjer smo generirali različne vrste valov, jim izmerili osnovne parametre in jih klasificirali: valovanje z dušenjem ob navpični steni, doseg valov na gladki obali in doseg valov na hrapavi obali, s katero smo ponazorili skalomet. Rezultati meritev prikazujejo fizikalne lastnosti generiranih valov, pri čemer klasifikacija valov temelji na izmerjeni periodi in višini. Z izbranimi valovi smo nato izmerili doseg valov na gladki in s skalometom zaščiteni nagnjeni obali ter primerjali zmanjšanje dosega valov v primeru uporabe skalometa za zavarovanje obale. Izmerjeni doseg valov smo primerjali tudi z izbranima empiričnima metodama za račun dosega po nagnjeni obali. Pokazali smo, da se doseg valov z uporabo skalometa praviloma zmanjša, ujemanje med izmerjenimi in teoretičnimi vrednostmi pa je bilo boljše pri hrapavi obali. Ugotovili smo, da bo za nadaljnje raziskave valov ključno močnejše dušenje odboja in uporaba natančnejše merilne opreme.

• Language: Slovenian
• Keywords: valovi, generator valov, lastnosti valov, doseg valov, gladka obala, skalomet
• Work type: Master's thesis/paper
• Typology: 2.09 - Master's Thesis
• Organization: FGG - Faculty of Civil and Geodetic Engineering
• Place of publishing: Ljubljana
• Publisher: [J. Čehovin]
• Year: 2021
• PID: 20.500.12556/RUL-127864
• UDC: 532.593:627.33(497.4)(043.3)
• COBISS.SI-ID: 71159555
• Publication date in RUL: 25.06.2021

ČEHOVIN, Jerneja, 2021, Uporaba generatorja valov za določanje lastnosti in dosega valov na nagnjeni obali : magistrsko delo [online]. Master’s thesis. Ljubljana : J. Čehovin. [Accessed 14 April 2025]. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=127864

Secondary language

• Language: English
• Title: Implementation of wave generator for determining wave characteristics and run-up on a sloped beach : master thesis

Abstract

The thesis discusses implementation of a wave generator in a laboratory flume. In the theoretical part we introduce the general characteristics of waves, describe various types of wave profiles and present two empirical methods for computing wave run-up on an inclined beach. Furthermore, we present the methodology of hydraulic modeling of waves and various types of wave generators. The applied laboratory equipment and the experimental technique are presented in detail. Various types of waves were generated and characterized in the three experiments performed: propagation of waves with damping at the vertical wall, wave run-up on a smooth, and on an armored inclined beach. The measured values gave physical characteristics of generated waves with their classification based on wave period and wave height. Wave run-up on the smooth and the armored beach was further measured with selected waves and compared against the results of the selected empirical methods. We demonstrated that wave run-up decreased when using rock armor as a coast protection measure. Better agreement between measured and theoretical values was achieved with the beach protected with rock armor. Stronger damping of wave reflection and more precise measuring equipment should be applied in further investigations.

• Keywords: waves, wave generator, wave characteristics, wave run-up, smooth slope, armor layer