Finite element analysis of flows in secondary settling tanks

Simple item page
dc.contributor.advisorReddy, Dayaen_ZA
dc.contributor.advisorEkama, Georgeen_ZA
dc.contributor.authorKleine, Dorotheeen_ZA
dc.date.accessioned2014-07-31T08:08:15Z
dc.date.available2014-07-31T08:08:15Z
dc.date.issued2002en_ZA
dc.descriptionBibliography: leaves 158-169.
dc.description.abstractSecondary settling tanks (SSTs) form a crucial part of wastewater treatment plants. Besides having to produce the separation of suspended solids and clarified effluent the secondary settling tank is used to concentrate and recycle the settled sludge to the biological reactor. The efficiency of the biological reactor in the waste water treatment system is determined by the efficiency of this final clarifying process. Hydrodynamic models have been developed for simulating secondary settling tanks in order to gain a better understanding of the complex flow patterns in these tanks, and to make design and optimization of the SST internal features possible. These models use mainly the finite volume method. This thesis is concerned with the development and implementation of a finite element approach to the simulation of flows in SSTs. Although it is nowadays also possible to realise an unstructured grid within the FVM, the power of the finite element method (FEM) lies in its higher flexibility in fitting irregular domains and in providing local grid refinement. Generally, unstructured mesh procedures with the FVM require essential, additional orthogonality corrections, which affect the accuracy of the solution, and these corrections increase the computational cost due to the additional computations and increased iteration requirements. Structured mesh discretization may offer significantly shorter computation time. The FEM is therefore convenient for handling arbitrarily shaped domains and adaptation of complex internal features of SSTs, such as inlet and outlet arrangements.en_ZA
dc.identifier.apacitationKleine, D. (2002). <i>Finite element analysis of flows in secondary settling tanks</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Mathematics and Applied Mathematics. Retrieved from http://hdl.handle.net/11427/4899en_ZA
dc.identifier.chicagocitationKleine, Dorothee. <i>"Finite element analysis of flows in secondary settling tanks."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Mathematics and Applied Mathematics, 2002. http://hdl.handle.net/11427/4899en_ZA
dc.identifier.citationKleine, D. 2002. Finite element analysis of flows in secondary settling tanks. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Kleine, Dorothee AB - Secondary settling tanks (SSTs) form a crucial part of wastewater treatment plants. Besides having to produce the separation of suspended solids and clarified effluent the secondary settling tank is used to concentrate and recycle the settled sludge to the biological reactor. The efficiency of the biological reactor in the waste water treatment system is determined by the efficiency of this final clarifying process. Hydrodynamic models have been developed for simulating secondary settling tanks in order to gain a better understanding of the complex flow patterns in these tanks, and to make design and optimization of the SST internal features possible. These models use mainly the finite volume method. This thesis is concerned with the development and implementation of a finite element approach to the simulation of flows in SSTs. Although it is nowadays also possible to realise an unstructured grid within the FVM, the power of the finite element method (FEM) lies in its higher flexibility in fitting irregular domains and in providing local grid refinement. Generally, unstructured mesh procedures with the FVM require essential, additional orthogonality corrections, which affect the accuracy of the solution, and these corrections increase the computational cost due to the additional computations and increased iteration requirements. Structured mesh discretization may offer significantly shorter computation time. The FEM is therefore convenient for handling arbitrarily shaped domains and adaptation of complex internal features of SSTs, such as inlet and outlet arrangements. DA - 2002 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2002 T1 - Finite element analysis of flows in secondary settling tanks TI - Finite element analysis of flows in secondary settling tanks UR - http://hdl.handle.net/11427/4899 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/4899
dc.identifier.vancouvercitationKleine D. Finite element analysis of flows in secondary settling tanks. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Mathematics and Applied Mathematics, 2002 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/4899en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Mathematics and Applied Mathematicsen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherMathematics and Applied Mathematicsen_ZA
dc.titleFinite element analysis of flows in secondary settling tanksen_ZA
dc.typeDoctoral Thesis
dc.type.qualificationlevelDoctoral
dc.type.qualificationnamePhDen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
thesis_sci_2002_kleine_d.pdf
Size:
9.96 MB
Format:
Adobe Portable Document Format
Description:
Download
Collections
PhD / Doctoral