Welcome To UTPedia

We would like to introduce you, the new knowledge repository product called UTPedia. The UTP Electronic and Digital Intellectual Asset. It stores digitized version of thesis, dissertation, final year project reports and past year examination questions.

Browse content of UTPedia using Year, Subject, Department and Author and Search for required document using Searching facilities included in UTPedia. UTPedia with full text are accessible for all registered users, whereas only the physical information and metadata can be retrieved by public users. UTPedia collaborating and connecting peoples with university’s intellectual works from anywhere.

Disclaimer - Universiti Teknologi PETRONAS shall not be liable for any loss or damage caused by the usage of any information obtained from this web site.Best viewed using Mozilla Firefox 3 or IE 7 with resolution 1024 x 768.

MIXING DYNAMICS OF STRATIFIED VORTEX PAST TILTED PIPELINE

YUAN, SHU SHIK (2017) MIXING DYNAMICS OF STRATIFIED VORTEX PAST TILTED PIPELINE. IRC, Universiti Teknologi PETRONAS.

[img] PDF
Restricted to Registered users only

Download (2201Kb)

Abstract

The study of vortex dynamics is an important field in fluid mechanics as vortex has the potential to induce vibration, namely vortex induced vibration (VIV), which can deteriorate the stability and integrity of structures. To prevent accidents due to vortices, a thorough study on vortex physics is necessary. In previous studies, a lot of researches have been conducted on the stratified vortex, through numerical or experimental approaches. However, when comes to a stratified vortex which is formed when a wave past through a tilted pipeline, there is still insufficient study focus on it. The primary objective in this study is to develop a CFD model which simulates the stratified vortex formation when a wave past through a vertical or tilted pipeline in a wave tank, using ANSYS Fluent CFD approach. Also, the effect of tilting this pipeline on the surrounding fluid flow condition and the vortex formation will be investigated. As this study will only focus on the fundamental and theoretical aspects of vortex, application of it in real work will not be included as the scope is limited. A 2D preliminary piston wave tank model is first developed based on Du & Leung (2011) piston wave tank, and is validated against the result in paper. After that, the 2D model is then expanded into 3D model. Further modification is done by inserting pipeline into the model, and changing the water property from single density to stratified condition. The two models developed in the end will be the models having vertical and 5° tilted pipeline, with stratified water in the wave tank. It is found that when a wave past through the pipeline, the velocity contour around the pipeline is highly resembling the initial formation of a von Karman vortex. When tilting the pipeline to right by 5° instead of placing it vertically, the stratified columnar vortex will twist slightly, as compared to the vertical columnar vortex in the vertical pipeline case. Using Reynolds number analysis, the vertical pipeline model is experiencing higher turbulence as compared to the tilted pipeline model, when the similar wave past the pipelines.

Item Type: Final Year Project
Academic Subject : Academic Department - Mechanical Engineering - Materials - Engineering materials - Metals alloys - Fabrication
Subject: T Technology > TJ Mechanical engineering and machinery
Divisions: Engineering > Mechanical
Depositing User: Ahmad Suhairi Mohamed Lazim
Date Deposited: 01 Aug 2018 09:53
Last Modified: 01 Aug 2018 09:53
URI: http://utpedia.utp.edu.my/id/eprint/17962

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...