Određivanje utjecaja uzdužnog nagiba i urona kobilice na silu otpora trupa jedrilice klase Optimist

undergraduate thesis

• Title (english): Determination of influence of pitch angle and keel depth on drag force of sail-boat class Optimist hull
• Author: Filip Volarić
• Mentor: Severino Krizmanić (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2016-03-02, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering

Abstract

U ovom radu se ispituje utjecaj promjene uzdužnog nagiba i dubine urona kobilice na hidrodinami čki otpor uronjenog dijela jedrilice klase Optimist. Istisnina je izračunata za ukupnu masu jedrilice i jedriličara od 80 kg. U proračunu je uzeta brzina jedrilice od 1,5 m/s. Za sve slučajeve proračunska domena je diskretizirana korištenjem računalnih programa Salome i cfMesh. Numeri čki proračun za stacionarne uvjete strujanja uz zanemaren utjecaj valova je izvršen u programskom paketu OpenFOAM. U radu je su prikazani i analizirani rezultati te su prikazana polja brzine i tlaka za najzanimljivije slučaje.

Abstract (english)

Goal of this work is to determinate the influence of pitch angle and keel depth on drag force of sail-boat class Optimist hull. Drag force is analyzed for the sail-boat cruise velocity of 1.5 m/s. Computational domain is discretizated using Salome and cfMesh program package, and various cases of pitch angle and keel depth where studied. Numerical analysis for stationary flow conditions is executed in OpenFOAM program package. The results are presented trough velocity and pressure fields of most interesting cases, so as in form of force-pitch angle diagrams.

• Keywords: Računalna dinamika fluida; metoda konačnih volumena; hidrodinamička sila otpora broda; nagib
• Keywords (english): Computational fluid dynamics; finite volume method; drag force; pitch
• Language: croatian
• URN:NBN: urn:nbn:hr:235:426481
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2019-05-22 16:25:27