We reconstruct 2D simulation to 3D scene and integrated a fluid-solid coupling based on FLO-2D model. Furthermore we add the friction and bump. From the point of view of fluid-solid coupling, we using the flow resistance and yield stress our proposed method make the fluid behaviour and runout more realistic comparing to other fluid-solid coupling research. Besides, from the point of view of debris flow simulation, we integrate the fluid-solid coupling into the debris flow simulation. And we can handle the bump of debris flow regarding trees, stone or house compared with other debris flow simulation.

El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado. / This research presents the numerical simulation to reproduce the transport and deposition processes of the sludge flow on March 15, 2017, strongly impacting the town of Pampapacta in Punta Hermosa-Peru.The debris flow initiation process in the basin was represented by hydrographs obtained from the estimated volumes of stormwater runoff and solid materials. The sludge flow was modeled in Flo2D to calculate hazard maps with the discharge event and others with different return periods.The numerical simulation results show acceptable results in relation to what happened. The model used to assess the hazard due to debris flow can predict and delineate, with acceptable precision, potentially hazardous areas for a landslide. The application of the proposed methodology to assess the hazard of disasters due to debris flows in basins and streams is useful to understand the extent of the impact of the mud flow during extreme weather events, as well as to develop emergency plans and formulate disaster policies.

El presente trabajo consiste en el modelamiento hidrológico e hidráulico de la quebrada Cashahuacra ubicada en el distrito de Santa Eulalia con el fin de proponer la estructura de un sistema de alerta temprana que integre estos modelos para evitar la pérdida, primordialmente, de vidas humanas. Se presenta una síntesis de los principales eventos de flujo de detritos ocurridos en dicho lugar así como un marco teórico que aborda conceptos básicos relacionados al estudio de la hidrología e hidráulica. Para el modelo hidrológico, se llevó a cabo la caracterización de la quebrada Cashahuacra y se obtuvo sus parámetros principales, así también, fue necesario la adquisición de los datos históricos de precipitación. De esta manera, el modelo hidrológico fue realizado con el software HEC-HMS versión 4.2 en colaboración con ArcGIS versión 10.2.1. y su extensión HEC-GeoHMS. Así, se pudo determinar los caudales máximos bajo los periodos de retorno de 5, 10, 20, 50, 100, 200 y 500 años. El modelo hidráulico fue desarrollado con el software FLO-2D versión PRO. Tuvo como parámetros de entrada al hidrograma calculado por el modelo hidrológico, a la topografía digital del terreno, y a parámetros reológicos como la viscosidad y el esfuerzo de cedencia. Luego, fueron obtenidas las velocidades y profundidades máximas de los periodos de retorno mencionados líneas arriba. Finalmente, se ha integrado estas dos modelaciones en la estructura de un sistema de alerta temprana frente a huaycos y se ha sugerido la implementación de un radar meteorológico para la quebrada en estudio. / The present work consists of hydrological and hydraulic modeling of the Cashahuacra stream located in the Santa Eulalia district in order to propose the structure of an early warning system that integrates these models to avoid the loss, primarily of human lives. A synthesis of the main debris flow events occurring in that place is presented as well as a theoretical framework that addresses basic concepts related to the study of hydrology and hydraulics. For the hydrological model, the characterization of the Cashahuacra stream was carried out and its main parameters were obtained, as well as the acquisition of the historical precipitation data. In this way, the hydrological model was made with the HEC-HMS software version 4.2 in collaboration with ArcGIS version 10.2.1. and its HEC-GeoHMS extension. Thus, it was possible to determine the maximum flow rates under the return periods of 5, 10, 20, 50, 100, 200 and 500 years. The hydraulic model was developed with the FLO-2D PRO version software. It had as input parameters to the hydrograph calculated by the hydrological model, to the digital topography of the land, and to rheological parameters such as viscosity and yield strength. Then, the maximum speeds and depths of the return periods mentioned above were obtained. Finally, these two models have been integrated into the structure of an early warning system against hurricanes and the implementation of a meteorological radar for the stream under study has been suggested. / Tesis

Urban flood models are an important tool in designing and analyzing municipalities sewer drainage systems and predicting the effect of potential extent and depth of future floods. In urban areas, coupled 1D-2D flood models are particularly useful as they can represent the surface- and sewer system and their interactions. But it iss common practice to simplify the sewer system by only simulating water exchange between both systems at manholes while neglecting the effect of grate inlets. To investigate the effect grate inlet representations have in flood models, the simulation results of different models created in the software MIKE FLOOD with the number of nodes and inlet sizes adjusted according to the location of actual grate inlets were compared. In addition, a comparison between the flood modeling softwares MIKE FLOOD and FLO-2D was performed, based on a case study in Motala.. It was found that both MIKE FLOOD and FLO-2D can predict similar flood propagation and maximum water depths. The MIKE FLOOD models predicted larger amounts of drained water via the sewer system. This was likely caused by the extra water added through water level correction in the MIKE FLOOD models combined with numerical instabilities in the FLO-2D sewer models. Adjusting the number and dimensions of nodes according to actual grate inlets proved to have little effect on the predicted maximum surface water depths. But it did result in decreased drainage capacity together with less sewer inflow compared to the models neglecting grate inlets. The inlet representation did have a significant effect on predicted flood durations, with the models neglecting grate inlets having shorter flood durations in downstream areas and longer flood durations in upstream areas compared to the other models. It was also found that that the effect inlet node representations has on flood durations heavily depends on their locations with nodes located in water gathering areas such as depressions with ponding water having the most effect.