MARC details
| 000 -LEADER |
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| fixed length control field |
03963ntm a2200337 i 4500 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
MY-KuUP |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20251125110925.0 |
| 006 - FIXED-LENGTH DATA ELEMENTS--ADDITIONAL MATERIAL CHARACTERISTICS |
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| fixed length control field |
t||||fr|||| 000 0 |
| 007 - PHYSICAL DESCRIPTION FIXED FIELD--GENERAL INFORMATION |
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| fixed length control field |
ta |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
240917t20242024my a|||fr|||| 000 0 eng d |
| 020 ## - INTERNATIONAL STANDARD BOOK NUMBER |
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| International Standard Book Number |
THE0009964 (Local) |
| Qualifying information |
Hardback |
| 040 ## - CATALOGING SOURCE |
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| Original cataloging agency |
UMPSA |
| Language of cataloging |
eng |
| Transcribing agency |
UMP |
| Description conventions |
rda |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) |
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| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) |
FTKMA .N54 2024 r Thesis |
| 100 0# - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Niellambare A/p Nadumaran, |
| Relator term |
author. |
| 245 10 - TITLE STATEMENT |
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| Title |
The effect of geometry and flow conditions on the microbubble formation in venturi microbubble generator / |
| Statement of responsibility, etc. |
Niellambare A/p Nadumaran |
| 264 #1 - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE |
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| Place of production, publication, distribution, manufacture |
Kuantan, Pahang : |
| Name of producer, publisher, distributor, manufacturer |
UMPSA, |
| Date of production, publication, distribution, manufacture, or copyright notice |
2024 |
| 264 #4 - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE |
|---|
| Date of production, publication, distribution, manufacture, or copyright notice |
© 2024 |
| 300 ## - PHYSICAL DESCRIPTION |
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| Extent |
xiv, 96 pages : |
| Other physical details |
illustrations (some color) ; |
| Dimensions |
30 cm. + |
| Accompanying material |
1 CD-ROM |
| 336 ## - CONTENT TYPE |
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| Source |
rdacontent |
| Content type term |
text |
| 337 ## - MEDIA TYPE |
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| Source |
rdamedia |
| Media type term |
unmediated |
| 338 ## - CARRIER TYPE |
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| Source |
rdacarrier |
| Carrier type term |
volume |
| 347 ## - DIGITAL FILE CHARACTERISTICS |
|---|
| Source |
rda |
| File type |
text file |
| Encoding format |
PDF |
| 500 ## - GENERAL NOTE |
|---|
| General note |
Faculty of Mechanical and Automotive Engineering Technology |
| 502 ## - DISSERTATION NOTE |
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| Dissertation note |
Thesis (Master of Science) -- Universiti Malaysia Pahang – 2024 |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
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| Bibliography, etc. note |
Includes bibliographical references |
| 520 3# - SUMMARY, ETC. |
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| Summary, etc. |
The Venturi microbubble generator (VMBG) is a device that creates microbubbles (MBs) using a simple structure and mechanism. Its effectiveness is determined by the size distribution of the generated bubbles (BSD) to meet specific application requirements. Two key parameters affecting VMBG performance are its geometric configuration and flow conditions. Most research had focused on their impact on BSD, but it is also important to consider their relationship to the mechanism of bubble formation and bubble formation characteristics. Despite many recent experimental visualizations, the relationship between key parameters and bubble formation in VMBG has been underdiscussed due to the challenges in studying MB formation mechanisms through experimental visualization. Thus, this study extensively investigated the effect of the two key parameters, geometry configuration and flow conditions of VMBG on the bubble’s formation characteristics. An ideal VMBG and nine additional VMBGs were designed by varying the angle of divergent section, the diameter and length of throat. Particle Image Velocimetry (PIV) setup is used to observe bubble formation and flow velocity distribution between the throat and divergent section of the VMBG. The flow condition varied with three flow rates (50LPM, 60LPM, and 70LPM) in this study. To further investigate the bubble breakup phenomenon, computational simulation (ANSYSFLUENT) was used to determine the detailed flow properties in the VMBG. As a result, the bubble formation characteristics strongly dependent on the flow condition such as velocity, turbulent intensity and vorticity. As velocity increases in the throat section, there is a corresponding rise in turbulent intensity and vorticity in the divergent section, intensifying the bubble formation. Regarding geometric variations, a larger divergent angle (60º) leads to the formation of smaller and denser bubbles, with a velocity of 5.64m/s and turbulence of 0.411 while a smaller throat diameter (10mm) enhances bubble formation in the VMBG with a velocity of 5.08m/s and turbulence of 0.411. Additionally, a longer throat (30mm) promotes the creation of larger, elongated bubbles, with maximum turbulence of 0.262 while a shorter throat has maximum turbulence of 0.285 resulting in smaller, fragmented bubbles. To sum up, crucial parameters like geometrical configuration and flow conditions play a pivotal role in altering the flow characteristics and thus affecting the bubble formation, eventually leading to controlling the generated bubble size. This research could guide in designing VMBG according to the desired bubble size and application requirements. |
| 610 20 - SUBJECT ADDED ENTRY--CORPORATE NAME |
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| Corporate name or jurisdiction name as entry element |
Faculty of Mechanical and Automotive Engineering Technology |
| General subdivision |
Dissertations |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Universities and colleges |
| General subdivision |
Dissertations |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Theses |
| General subdivision |
Dissertations |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
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| Source of classification or shelving scheme |
Library of Congress Classification |
| Koha item type |
Thesis |