Fuzzy modelling of hydrodynamics and mass transfer of drops in a rotating disc contactor column

Rotating Disc Contactor (RDC) column is one of the important equipments for separation process, because it gives high performance and is more efficient among equipments for solvent extraction. Over the years, researchers and engineers are designing and building models of hydrodynamics of drops and m...

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Main Author:	Abd. Alrahman Elfakie, Hafez Ibrahim
Format:	Thesis
Language:	English
Published:	2014
Subjects:	QA Mathematics
Online Access:	http://eprints.utm.my/id/eprint/78064/1/HafezIbrahimAbdPFS2014.pdf
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id	my-utm-ep.78064
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spelling	my-utm-ep.780642018-07-23T06:05:52Z Fuzzy modelling of hydrodynamics and mass transfer of drops in a rotating disc contactor column 2014-12 Abd. Alrahman Elfakie, Hafez Ibrahim QA Mathematics Rotating Disc Contactor (RDC) column is one of the important equipments for separation process, because it gives high performance and is more efficient among equipments for solvent extraction. Over the years, researchers and engineers are designing and building models of hydrodynamics of drops and mass transfer to interpret the performance and to increase the efficiency of the RDC column. In this research, the main aim is to develop and design models of hydrodynamics and mass transfer of drops that are capable of work with any design of RDC column based on the experimental data and fuzzy modelling. Firstly, the Sauter mean diameter is calculated based on the flow rate of dispersed phase and Mamdani fuzzy model. Secondly, the fuzzy model based on optimal interval technique (FMBOIT) is established to predict models of the hydrodynamics of drops such as, mean number of daughter drops, probability of drop breakage, Sauter mean diameter and hold-up of dispersed phase from experimental data. Then, these models and beta distribution are incorporated to develop the forward model of drop size distribution, which is used to obtain the drop size distribution along RDC column. Besides the forward model, the inverse model of drop size distribution is constructed based on the optimization technique that determined the number of drops at bottom stages using the number of drops at top stages. The last model is the mass transfer model, which depends on the forward model of drop size distribution for calculating the amount of mass transfer from the continuous phase to the dispersed phase. In addition, the mass transfer model allows the usage of either the terminal or the characteristic velocity of drops which determines the lifetime of drops between compartments. All the models are developed based on three phases. Phase one is the literature review and problem formulation. Phase two is the design and development of the proposed models. Phase three is implementation, verification and validation of proposed models from phase two. Most of these models give less error when compared with simulation data of previous researchers against experimental data. Furthermore, the new mass transfer model allows parameters such as the height of the compartment, the number of stages or the diameter of the column to be changed at the same time. Thus, this new model is a powerful model for predicting the performance and design of RDC column. 2014-12 Thesis http://eprints.utm.my/id/eprint/78064/ http://eprints.utm.my/id/eprint/78064/1/HafezIbrahimAbdPFS2014.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:97919 phd doctoral Universiti Teknologi Malaysia, Faculty of Science Faculty of Science
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	QA Mathematics
spellingShingle	QA Mathematics Abd. Alrahman Elfakie, Hafez Ibrahim Fuzzy modelling of hydrodynamics and mass transfer of drops in a rotating disc contactor column
description	Rotating Disc Contactor (RDC) column is one of the important equipments for separation process, because it gives high performance and is more efficient among equipments for solvent extraction. Over the years, researchers and engineers are designing and building models of hydrodynamics of drops and mass transfer to interpret the performance and to increase the efficiency of the RDC column. In this research, the main aim is to develop and design models of hydrodynamics and mass transfer of drops that are capable of work with any design of RDC column based on the experimental data and fuzzy modelling. Firstly, the Sauter mean diameter is calculated based on the flow rate of dispersed phase and Mamdani fuzzy model. Secondly, the fuzzy model based on optimal interval technique (FMBOIT) is established to predict models of the hydrodynamics of drops such as, mean number of daughter drops, probability of drop breakage, Sauter mean diameter and hold-up of dispersed phase from experimental data. Then, these models and beta distribution are incorporated to develop the forward model of drop size distribution, which is used to obtain the drop size distribution along RDC column. Besides the forward model, the inverse model of drop size distribution is constructed based on the optimization technique that determined the number of drops at bottom stages using the number of drops at top stages. The last model is the mass transfer model, which depends on the forward model of drop size distribution for calculating the amount of mass transfer from the continuous phase to the dispersed phase. In addition, the mass transfer model allows the usage of either the terminal or the characteristic velocity of drops which determines the lifetime of drops between compartments. All the models are developed based on three phases. Phase one is the literature review and problem formulation. Phase two is the design and development of the proposed models. Phase three is implementation, verification and validation of proposed models from phase two. Most of these models give less error when compared with simulation data of previous researchers against experimental data. Furthermore, the new mass transfer model allows parameters such as the height of the compartment, the number of stages or the diameter of the column to be changed at the same time. Thus, this new model is a powerful model for predicting the performance and design of RDC column.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Abd. Alrahman Elfakie, Hafez Ibrahim
author_facet	Abd. Alrahman Elfakie, Hafez Ibrahim
author_sort	Abd. Alrahman Elfakie, Hafez Ibrahim
title	Fuzzy modelling of hydrodynamics and mass transfer of drops in a rotating disc contactor column
title_short	Fuzzy modelling of hydrodynamics and mass transfer of drops in a rotating disc contactor column
title_full	Fuzzy modelling of hydrodynamics and mass transfer of drops in a rotating disc contactor column
title_fullStr	Fuzzy modelling of hydrodynamics and mass transfer of drops in a rotating disc contactor column
title_full_unstemmed	Fuzzy modelling of hydrodynamics and mass transfer of drops in a rotating disc contactor column
title_sort	fuzzy modelling of hydrodynamics and mass transfer of drops in a rotating disc contactor column
granting_institution	Universiti Teknologi Malaysia, Faculty of Science
granting_department	Faculty of Science
publishDate	2014
url	http://eprints.utm.my/id/eprint/78064/1/HafezIbrahimAbdPFS2014.pdf
_version_	1747817898188996608

Fuzzy modelling of hydrodynamics and mass transfer of drops in a rotating disc contactor column

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