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CFD simulation of hydrodynamics in gas-liquid airlift reactor / Mohamed Nazim Bin Mohamed Sarajudin

By:

Mohamed Nazim Bin Mohamed Sarajudin

Material type: Text

TextPublication details: Kuantan, Pahang : UMP, 2010Description: xvi, 62 p. : ill. (some col.) ; 30 cm. + 1 CD-ROMISBN:

THE0004203(Local)

Subject(s):

Dissertation note: Project paper (Bachelor of Chemical Engineering) -- Universiti Malaysia Pahang - 2010 Abstract: This thesis presents a Computational Fluid Dynamics (CFD) study of the two-phase bubbly flow in an Airlift reactor whereby the Gambit 2.3.16 and Fluent 6.3.26 was employed as modelling tools. The dispersed gas and bubbles dynamics in turbulence liquid are modeled using an Eulerian-Eulerian approach with dispersed k- turbulence model and Schiller-Naumann drag coefficient for the momentum exchange. The medium of fluid used are water and air. All bubbles are assumed to be a monodispersed with the diameter ranged from 3.4 to 4.3 mm. The CFD model predicts the spatial distribution of local gas holdup and liquid velocity profile. The local gas holdup and liquid velocity profile were compared to the experimental measurement from Couvert (2000) which was performed using a particle image velocimetry. The results from the CFD simulation show reasonably good agreement with the experimentally measurement data by Couvert (2000). Considering its predictive capability, the model developed in this work outlined in this work can provide a useful scale-up evaluation of airlift reactors.

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Holdings ( 2 )
Title notes ( 3 )

Holdings
Item type	Current library	Call number	Copy number	Status	Date due	Barcode
Final Year Report	UMPLIB GAMBANG	TP157 .N39 2010 rs Bc. (Browse shelf(Opens below))	1	Not for loan		0000060996
Final Year Report	UMPLIB GAMBANG	CD 5661 \| TP157 .N39 2010 rs Bc. (Browse shelf(Opens below))	1	Not for loan		0000060997

Project paper (Bachelor of Chemical Engineering) -- Universiti Malaysia Pahang - 2010

Bibliography: p. [46]-50

This thesis presents a Computational Fluid Dynamics (CFD) study of the two-phase bubbly flow in an Airlift reactor whereby the Gambit 2.3.16 and Fluent 6.3.26 was employed as modelling tools. The dispersed gas and bubbles dynamics in turbulence liquid are modeled using an Eulerian-Eulerian approach with dispersed k- turbulence model and Schiller-Naumann drag coefficient for the momentum exchange. The medium of fluid used are water and air. All bubbles are assumed to be a monodispersed with the diameter ranged from 3.4 to 4.3 mm. The CFD model predicts the spatial distribution of local gas holdup and liquid velocity profile. The local gas holdup and liquid velocity profile were compared to the experimental measurement from Couvert (2000) which was performed using a particle image velocimetry. The results from the CFD simulation show reasonably good agreement with the experimentally measurement data by Couvert (2000). Considering its predictive capability, the model developed in this work outlined in this work can provide a useful scale-up evaluation of airlift reactors.