Stabilnost fluidnog toka u kanalima milireaktora

undergraduate thesis

• Title (english): Stability of fluid flow in chanels of a millireactor
• Author: Dorotea Marčec
• Mentor: Vladimir Dananić (mentor)
• Committee member: Vladimir Dananić (predsjednik povjerenstva)
• Committee member: Vesna Volovšek (član povjerenstva)
• Committee member: Emi Govorčin Bajsić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2019-09-18, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Chemical Engineering

Abstract

Cilj ovoga rada je ispitati utjecaj različitih oblika ulazne sekcije, takozvanih milimiješala, na razvoj profila strujanja u milireaktorima u višefaznom, nemješljivom sustavu ulje-voda. U tu svrhu dizajnirana su tri reaktora okruglog poprečnog presjeka kanala, φ = 2 mm s duljinom kanala l = 640 mm i milimiješala T-oblika, J-oblika i Y-oblika. Modeli milireaktora nacrtani su u računalnom programu za 3D modeliranje ANSYS i izrađeni tehnologijom aditivne proizvodnje na uređaju Ultimaker to Go. U sva tri milireaktora proveli su se eksperimenti pri istim volumnim protocima, odnosno, jednakim vremenima zadržavanja, τ prilikom čega su praćene i opisane pojave različitih režima strujanja unutar cijevi milireaktora. Provedeni eksperimenati ukazuju da oblik ulazne sekcije (milimiješalo) uvelike utječe na razvoj profila strujanja u milireaktorima pri čemu se najčešće pojavljuje segmentirano strujanje.

Abstract (english)

The aim of this thesis is to test influence of different entry sections, so called mili mixers, on the development of fluid flow in multiphased, non-mixing system oil-water. For this purpose three reactors with diameter of φ = 2 mm and channel lenght of l=640 mm have been designed with three different milimixers: T-shape, J-shape and Y-shape. Models of milireactors are made in computer software for 3D modeling ANSYS and made with additive manufacturing technology on Ultimaker to go. Experiments were made in all three milireactors at the same volumetric flow rate which means in the same retention time, τ, and at during which notes and description of the flow was made. Experiments have shown that the shape of entry section (milimixer) greatly influences the development of fluid flow in milireactors where the most common type of flow is segmented flow.

• Keywords: reaktori malih dimenzija kanala; milireaktori; dvofazni sustav; nemješljiv sustav; sustav ulje-voda; stabilnost toka; aditivna proizvodnja
• Keywords (english): reactors of small channel dimensions; milireactors; two phased system; non-mixing system; oil/water system; stability of the flow; additive manufacturing
• Language: croatian
• URN:NBN: urn:nbn:hr:149:018461
• Study programme: Title: Materials Science and Engineering - Undergraduate study; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2023-05-25 09:49:44