We used coupled watershed and reservoir models to evaluate the impacts of deforestation and l Niño Southern Oscillation (ENSO) phase on drinking water quality. Source water total organic carbon (TOC) is especially important due to the potential for production of carcinogenic disinfection byproducts (DBPs). The Environmental Fluid Dynamics Code (EFDC) reservoir model is used to evaluate the diff...

In order to improve the forecasting ability of numerical models, a sequential data assimilation scheme, nudging, was applied to blend remotely sensing high-frequency (HF) radar surface currents with results from a three-dimensional numerical, EFDC (Environmental Fluid Dynamics Code) model. For the first time, this research presents the most appropriate nudging parameters, which were determined ...

Dam operation is regarded as an effective way to increase water, food, and energy security for society. However, with the increasing water demand frequent extreme droughts, numerous rivers worldwide go through periods of scarcity ecosystem deterioration varying degrees. Balancing supply ecological flow dam-regulated river network essential in context restoration. In this study, we proposed a hy...

An accurate description of the fluid flow and heat transfer within a Pressurized Water Reactor (PWR), for the safety analysis and reactor performance is always desirable. In this paper a mathematical model of the fundamental physical phenomena which are associated to a typical PWR is presented. The mathematical model governs the fluid dynamics in the reactor. Using commercial software CFX, a co...

A variety of data assimilation approaches have been applied to enhance modelling capability and accuracy using observations from different sources. The algorithms have varying degrees of complexity of implementation, and they improve model results with varying degrees of success. Very little work has been carried out on comparing the implementation of different data assimilation algorithms usin...

Concerns have increased regarding water quality deterioration in arid land water. Water age is a useful indicator of the susceptibility bodies to and helpful for knowing basic mechanisms governing transport materials through bodies. In current study, spatial distributions small lake Bosten Lake (hereinafter referred as lake) were investigated with two-dimensional hydrodynamic model built on bas...

Harmful algal blooms (HABs) caused by harmful cyanobacteria adversely impact the water quality in aquatic ecosystems and burden socioecological systems that are based on utilization. Currently, Korea uses Environmental Fluid Dynamics Code-National Institute of Research (EFDC-NIER) model to predict algae conditions respond through HAB alert system. This study aimed establish an additional deep l...

Abstract. Autocalibration techniques have the potential to enhance efficiency and accuracy of intricate process-based hydrodynamic water quality models. In this study, we developed a new R-based autocalibration toolkit for Environmental Fluid Dynamics Code (EFDC) implemented it into recalibration Yuqiao Reservoir Water Quality Model (YRWQM), with long-term observations from 2006 2015, including...

10 This paper presents an investigation of the impacts of a Severn Barrage on the hydro-environment of 11 the Bristol Channel and Severn Estuary using the Environmental Fluid Dynamics Code (EFDC) model 12 with a recently developed Barrage module (EFDC_B). Details are given of a barrage module being 13 implemented into the EFDC model to represent the various hydraulic structures, such as turbine...