TY  - BOOK
AU  - Siti Nur Suhailla binti Haji Abu Bakar
AU  - 
TI  - Numerical Analysis Of Fishery Pond Abraion Using Nanobubble Technology
PY  - 2022///
CY  - Bnadar Seri Begawan
PB  - Universiti Teknologi Brunei
KW  - Universiti Teknologi Brunei
KW  - Dissertation
KW  - Thesis writing
KW  - Aquaculture
KW  - Environmental aspects
N1  - A thesis submitted to The Universiti Teknologi Brunei (UTB) in partial fulfillment of the requirements for the degree of Master of Science (MSc) in Mechanical Engineering; ABSTRACT
Fish growth and dissolved oxygen levels are positively correlated. Achieving and maintaining good water quality plays a major role in overall fish health and performance in aquaculture production systems. Due to the fact that nanobubbles can provide longevity of the nanobubbles inside the water column for up to 2 to 3 months without popping. Traditional aeration needs to be revised and resolved by infusing oxygen directly by using nanobubble technology to enhanced the process of dissolved oxygen. Nanobubble Technology can be the most effective aeration technology. Therefore, this research aims to determine the process of dissolved oxygen enrichment in fish farming media using nanobubbles technology by constructing nanobubbles using Computational Fluid Dynamics (CFD) simulations to develop a suitable parameter to produce nanobubbles by considering two gas-liquid phases. Twenty cases were investigated, with 4 different inlet velocities, 5 different gas-to-liquid ratios at a constant inlet diameter. The computational results demonstrated that the gas-liquid ratio and inlet velocity had a significant influence on bubble size formation. At all gas-liquid ratios used in this research, nanobubbles as small as 0.12 µm to 0.18 µm were produced with the lowest inlet velocity of 0.01 m/s. Higher velocities are not necessary for the development of nanobubbles because they can merge to generate larger bubbles and releases to the surface more quickly; Thesis (Degree) -Universiti Teknologi Brunei, 2022
ER  -