{"id":{"repo_id":"mit","oai_identifier":"oai:dspace.mit.edu:1721.1/9637"},"canonical_url":"https://search.dev.ndltd.org/etd/mit/oai:dspace.mit.edu:1721.1/9637","repository":{"repo_id":"mit","name":"MIT","base_url":"https://dspace.mit.edu/oai/request"},"display":{"title":"Interfacing hydrodynamic and water quality models with the Eulerian-Lagrangian method","abstract":"The problem of interfacing hydrodynamic and water quality models is investigated with emphasis on modeling efficiency, accuracy and flexibility. An Eulerian-Lagrangian type of transport model is proposed for interfacing due to its superior simulation effi­ciency and numerical resolution in advection dominant flows. Comparisons are made between Eulerian models and Eulerian-Lagrangian models through both theoretical analyses and numerical studies of mass conservation and concentration accuracy. A mass conservative model, such as an Eulerian type model, will not necessarily guar­antee concentration accuracy. As part of this research, a three dimensional Eulerian­Lagrangian transport model (ELM3D) is developed and validated. The interfacing efficiency of ELM3D is demonstrated through a series of numerical tracer studies simulating the future outfall in Massachusetts Bay. Comparison against a tradi­tional Eulerian model, ECOMsi, shows that an Eulerian-Lagrangian interfacing with a proper mass correction technique, such as total mass scaling, can serve as an efficient transport tool, which is more robust than conventional Eulerian Models in dealing with advection dominant flows.","abstract_html":"The problem of interfacing hydrodynamic and water quality models is investigated with emphasis on modeling efficiency, accuracy and flexibility. An Eulerian-Lagrangian type of transport model is proposed for interfacing due to its superior simulation effi­ciency and numerical resolution in advection dominant flows. Comparisons are made between Eulerian models and Eulerian-Lagrangian models through both theoretical analyses and numerical studies of mass conservation and concentration accuracy. A mass conservative model, such as an Eulerian type model, will not necessarily guar­antee concentration accuracy. As part of this research, a three dimensional Eulerian­Lagrangian transport model (ELM3D) is developed and validated. The interfacing efficiency of ELM3D is demonstrated through a series of numerical tracer studies simulating the future outfall in Massachusetts Bay. Comparison against a tradi­tional Eulerian model, ECOMsi, shows that an Eulerian-Lagrangian interfacing with a proper mass correction technique, such as total mass scaling, can serve as an efficient transport tool, which is more robust than conventional Eulerian Models in dealing with advection dominant flows.","abstract_has_math":false,"creators":["Tang, Ling, 1963-"],"institution":"Massachusetts Institute of Technology","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":"Massachusetts Institute of Technology. Department of Civil and Environmental Engineering","school":null,"contributors":[],"advisors":["E. Eric Adams."],"committee_chairs":[],"committee_members":[],"year":1998,"date_issued":"1998","date_published":"1998","updated_at":"2026-07-22T22:21:02Z","subjects":["Civil and Environmental Engineering"],"languages":["eng"],"rights":["M.I.T. theses are protected by copyright. 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An Eulerian-Lagrangian type of transport model is proposed for interfacing due to its superior simulation effi­ciency and numerical resolution in advection dominant flows. Comparisons are made between Eulerian models and Eulerian-Lagrangian models through both theoretical analyses and numerical studies of mass conservation and concentration accuracy. A mass conservative model, such as an Eulerian type model, will not necessarily guar­antee concentration accuracy. As part of this research, a three dimensional Eulerian­Lagrangian transport model (ELM3D) is developed and validated. The interfacing efficiency of ELM3D is demonstrated through a series of numerical tracer studies simulating the future outfall in Massachusetts Bay. Comparison against a tradi­tional Eulerian model, ECOMsi, shows that an Eulerian-Lagrangian interfacing with a proper mass correction technique, such as total mass scaling, can serve as an efficient transport tool, which is more robust than conventional Eulerian Models in dealing with advection dominant flows."]},{"key":"dc:description.degree","label":"Dc Description Degree","values":["Ph.D."]},{"key":"dc:format.mimetype","label":"Dc Format Mimetype","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Interfacing hydrodynamic and water quality models with the Eulerian-Lagrangian method"]}]}],"canonical_facts":{"dc:contributor.advisor":["E. Eric Adams."],"dc:contributor.department":["Massachusetts Institute of Technology. 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