Parametric study and dimensionality reduction applied to side weir flow
In this work Model Order Reduction (MOR) techniques are applied for the simulation of side weirs. The main goal is to generate a surrogate model to predict the water discharge depending on the geometry (crest and length) of the weir and the inflow rate. The work has been done in collaboration with C...
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| Tipo de recurso: | tesis de maestría |
| Fecha de publicación: | 2023 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/398384 |
| Acceso en línea: | https://hdl.handle.net/2117/398384 |
| Access Level: | acceso abierto |
| Palabra clave: | Weirs Sewerage sanitation system combined sewage system CSS combined sewage overflow CSO: surrogate surface reduced space urban drainage system side weir Assuts Clavegueram Àrees temàtiques de la UPC::Enginyeria civil::Enginyeria hidràulica, marítima i sanitària::Enginyeria sanitària |
| Sumario: | In this work Model Order Reduction (MOR) techniques are applied for the simulation of side weirs. The main goal is to generate a surrogate model to predict the water discharge depending on the geometry (crest and length) of the weir and the inflow rate. The work has been done in collaboration with Canal de Isabel II, the responsible company for the management of the urban drainage infrastructure in the Madrid region. A side weir is a complex infrastructure that takes part of the sanitation system of a city that discharges the load of some sewer pipes by redirecting part of the flow to a secondary system. This is automatically activated when the primary combined sewer system is overloaded, as in case of meteorological adverse situations. The surrogate is built based on a training set of 161 finite element flow simulations, processed using a singular value decomposition to generate a basis. Several interpolation techniques are tested to construct the surrogate, namely Inverse Distance Weighting (IDW), natural, linear, nearest and radial basis. The IDW technique is found to be the more accurate for this application, providing velocity distribution errors under 2%. Results are delivered to Canal de Isabel II in a friendly interface format, a MATLAB App, that allows the end-user to run cheap and fast new ROM simulations along the cross-section of interest and obtain the velocity distribution, the air-water interface level and its coordinates. |
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