Obrada eksperimentalnog profila brzine za rubne uvjete Q1d2

master's thesis

• Title (english): Analysis of flow velocity profile for boundary conditions Q1d2
• Author: Ivan Čolak
• Mentor: Neven Kuspilić (mentor)
• Mentor: Gordon Gilja (komentor)
• Committee member: Neven Kuspilić (predsjednik povjerenstva)
• Committee member: Gordon Gilja (član povjerenstva)
• Committee member: Kristina Potočki (član povjerenstva)
• Granter: University of Zagreb; Faculty of Civil Engineering; (Water Research); Zagreb
• Defense date and country: 2024-02-20, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Civil Engineering; Hydrotechnology

Abstract

U ovom radu obrađujemo eksperimentalne profile brzina pri rubnim uvjetima Q1d2. Eksperimenti se odvijaju u sklopu projekta R3PEAT čija se motivacija istraživanja temelji na analizi procesa podlokavanja u blizini riprap zaštite oko stupova mostova. Obuhvaćaju mjerenje profila brzina pri protoku Q1 (30 l/s) i dubini toka d2 (20 cm). Rezultate brzine strujanja vode u stvarnom vremenu u hidrauličkom kanalu smo dobili pomoću kontinuiranog mjerenja sa visoko frekventnim ADVP uređajem. Koristili smo različite slučajeve protoka (Q1 = 5 l/s; Q2 = 10 l/s; Q3 = 15 l/s; Q4 = 20 l/s; Q5 = 25 l/s; Q6 = 30 1/s) za uspoređivanje rezultata i analize promjena u koritu. Cilj ovog rada je analizirati profile brzina (komponente u, v, w) duž presjeka za svaki slučaj protoka te pomoću izmjerenih brzina prikazati hidrauličke karakteristike (Reynoldsovo naprezanje i turbulentnu kinetičku energiju) i njihove utjecaje na eroziju korita.

Abstract (english)

In this work, we investigate experimental velocity profiles under boundary conditions Q1d2. The experiments are part of the R3PEAT project, which aims to analyze the scouring process near riprap protection around bridge piers, We measure velocity profiles under flow rate Q1 (30 L/s) and flow depth d2 (20 cm). Real-time water flow velocity results in the hydraulic channel were obtained using continuous measurements with a high-frequency ADVP device. We used various flow cases (Q1 = 5 L/s; Q2 = 10 L/s; Q3 = 15 L/s; Q4 = 20 L/s; Q5 = 25 L/s; Q6 = 30 L/s) to compare results and analyze changes in the channel. The objective of this work is to analyze the velocity profiles (components u, v, w) along the cross-section for each case of flow and demonstrate the turbulence characteristics (Reynolds stress and turbulent kinetic energy) and their impacts on channel erosion using measured velocities.

• Keywords: Turbulentne karakteristike; Acoustic Doppler Velocimeter; Podlokavanje mostova; Hidraulički kanal
• Keywords (english): Turbulence characteristics; Acoustic Doppler Velocimeter; Scouring of bridges; Hydraulic channel
• Language: croatian
• URN:NBN: urn:nbn:hr:237:769690
• Study programme: Title: Civil Engineering; specializations in: Construction Management, Transportation Engineering, Geotechnical Engineering, Hydraulic Engineering, Structural Engineering, Construction Materials, Theory and Modeling of Structures; Course: Hydraulic Engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka građevinarstva (magistar/magistra inženjer/inženjerka građevinarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2024-03-15 09:52:45