A5073799763- Hydrology and Sediment Transport Processes
- Hydraulic flow and structures
- Soil erosion and sediment transport
- Hydrology and Watershed Management Studies
- Wind and Air Flow Studies
- Landslides and related hazards
- Fluid Dynamics and Vibration Analysis
- Amoebic Infections and Treatments
- Water Quality Monitoring and Analysis
- Heat Transfer Mechanisms
- Fluid Dynamics and Turbulent Flows
- Water Quality and Pollution Assessment
- Environmental Science and Water Management
- Flood Risk Assessment and Management
- Refrigeration and Air Conditioning Technologies
- Computational Fluid Dynamics and Aerodynamics
- Child Nutrition and Water Access
- Fluid dynamics and aerodynamics studies
- Parasitic Infections and Diagnostics
University of Cuenca
2015-2024
United States Army Corps of Engineers
2022
Washington State University Spokane
2015
Changes in flood loads and reservoir levels, produced by climate change (CC), represent an increasing concern for dam safety managers downstream populations, highlighting the need to define adaptation strategies based on failure risk management framework. Currently, thousands of dams worldwide, varying use, age, maintenance, may a threat cities case structural failure. Several studies relate several issues spillway, which be even more vulnerable CC conditions. This study provides review...
The current study presents an experimental procedure used to determine bedload sediment transport rates in channels with high gradients and coarse sediment. With the aim validate for further investigations, laboratory experiments were performed calculate rates. a tilting flume slopes ranging from 3% 5%. particles uniform shape (spheres). divided into four cases based on size. Three of sizes 10 mm, 15 mm 25 case grain size distribution formed particle considered. From results mathematical...
Abstract Using hydraulic geometry (HG) theory, we investigated three rivers typical of the Ecuadorian mountainous region with longitudinal slopes ranging from 0.8% to 10% and coarse bed material d 50 3 54 mm values 90 up 908 mm. Extensive field measurements were performed characterize geometric properties at 33 sites. these data, at‐a‐station HG relationships obtained for top width, average flow depth, velocity. Dimensional dimensionless downstream relations parameters as well channel slope...
Cryptosporidium and Giardia are infectious parasitic forms widely distributed in aquatic ecosystems resistant to disinfection of drinking water. Their presence was investigated the lower areas city’s four rivers through a four-stage methodology. Between December 2017 April 2018, three monitoring campaigns were conducted, with results ranging between not detected 500 oocysts/L for Cryptosporidium, 300 Giardia. more abundant, especially Machángara River. In same period, bacteriological quality...
The possibility of reusing the effluent from Cuena’s wastewater treatment plant WWTP is analyzed through application two treatments: conventional physical–chemical (coagulation, flocculation, sedimentation and filtration, disinfection) advanced oxidation with a combination hydrogen peroxide/ozone. results show that neither method independently resolves all limitations for reuse, especially regarding organic matter, nutrients, turbidity. Therefore, compatibility quality treated water...
The development of experimental theories has been the normal practice for studying hydraulics and fluid dynamics.Based on fundamental equations some simplifications are included through laboratory experimentation many relationships that currently applied have obtained.With advancement technology, numerical simulation government taken an important role in complementing existing theories.However, it also a certain level simplification, so not able to fully replace experimentation.A combination...
In Ecuador, steep rough-bedded channels constitute the main component of mountainous drainage system. They provide sediment to milder-slope downstream channels. Thus, transport represents a driving process in natural Namely, it defines river morphology evolution. To quantify and understand magnitude effect this surrounding environment, understanding knowledge bedload must be improved. The study steeper with coarser material is complex process. continuously changing environment results high...
El transporte de sedimento es un proceso importante para ríos naturales, su determinación complejo debido a la variabilidad y naturaleza cambiante los factores que intervienen. Como una contribución descripción este fenómeno enfatizar problemas, las necesidades potencialidades enfoques numéricos, el solucionador settingFoam (OpenFoam) utilizado simular sedimentos en canal rectangular. modelo constituye simplificación basada aplicación solo parámetro (alpha) determinar características mezcla...
Hydraulic geometry (HG) theory has been applied to characterize the morphological changes that a river undergoes as result of in discharge. Furthermore, HG used variety studies including indirect discharge estimates, habitat assessment, and flow resistance analysis. Since is always evolving towards equilibrium, relations are obtained based on measured data relate top width, mean depth, velocity with At-a-station downstream have defined development at cross-section reach scales, respectively....
Bedload transport rates for high-gradient gravel bed rivers has been studied through a physical model that replicated the typical features of these channels.A stepwise regression was performed to identify best predictors from set independent variables.As variables channel slope, ratio area occupied by large particles total plan area, flow discharge, mean depth, velocity, water surface boundary shear stress, and velocity were considered.Different characteristic diameters (d 16 , d 50 84 90 )...