نتایج جستجو برای: water inflow

تعداد نتایج: 558482  

Journal: :civil engineering infrastructures journal 0
fereshteh nourmohammadi dehbalaei msc. department of civil engineering, razi university, kermanshah, iran, mitra javan assistant professor, department of civil engineering, razi university – water and wastewater research center, razi university, kermanshah, iran afshin eghbalzaeh assistant professor, department of civil engineering, razi university – water and wastewater research center, razi university, kermanshah, iran morteza eftekhari director of water resource institute (wri), tehran, iran seyad ehsan fatemi assistant professor, faculty of agriculture and natural resources water engineering department, razi university, kermanshah, iran

in this research, a 2d laterally averaged model of hydrodynamics and water quality, ce-qual-w2, was applied to simulate water quality parameters in the ilam reservoir. the water quality of ilam reservoir was obtained between mesotrophic and eutrophic based on the measured data including chlorophyll a, total phosphorus and subsurface oxygen saturation. the ce-qual-w2 model was calibrated and ver...

In this research, a 2D laterally averaged model of hydrodynamics and water quality, CE-QUAL-W2, was applied to simulate water quality parameters in the Ilam reservoir. The water quality of Ilam reservoir was obtained between mesotrophic and eutrophic based on the measured data including chlorophyll a, total phosphorus and subsurface oxygen saturation. The CE-QUAL-W2 model was calibrated and ver...

حسینی, عطاالله , سهرابی, تیمور , طالبی, خلیل ,

During recent years, worldwide concern has been focused on the potential for contamination of surface waters and ground waters by agrochemicals in runoff and soil water from irrigated fields. Given this perspective, it is very important to correctly evaluate the levels of different agrochemicals in water, both from human toxicological and environmental viewpoints and to develop management strat...

2010
C.J.S. Sarmiento R. M. Gonzalez

In managing a multipurpose dam, knowledge of inflow is essential in planning and scheduling discharges for optimal power production and irrigation supply, and flood control. Utilization of satellite imagery improves inflow estimates provided by digital spatial data instead of those from calculations on drawn maps; the former yields measurements over an area instead of extrapolations from point ...

2017
Qike Xie Zhaowei Liu Xing Fang Yongcan Chen Chong Li Sally MacIntyre

A two-dimensional hydrodynamic CE-QUAL-W2 model was configured for a deep subtropical river-run reservoir, the Xiluodu Reservoir (XLDR), in China to simulate water temperature in the first two years of impoundment (2013–2014) using measured data as model input. It was calibrated using observed temperature profiles near the dam and the outflow temperatures. Observed daily temperatures at four ga...

2008
Peter-Jules van Overloop Steven Weijs Sjoerd Dijkstra

Model Predictive Control has been implemented on a large drainage canal system in the Netherlands. This water system can be represented as a reservoir with uncertain inflow due to rainfall runoff and a water level that has to be kept within a certain range by a control flow that is limited in capacity. Tests demonstrate that Model Predictive Control outperforms feedback and feedforward controls...

2011
Ivette Luna Rosangela Ballini Secundino Soares Donato da Silva-Filho

Inflow data plays an important role in water and energy resources planning and management. In general, due to the limited availability of historical inflow data, synthetic streamflow time series have been widely used for several applications such as midand long-term hydropower scheduling and the identification of hydrological processes. This paper explores the use of fuzzy inference systems for...

ژورنال: علوم آب و خاک 2011
جواد فرهودی, , حسین حمیدی فر, , محمد حسین امید, ,

This paper presents the results of an analytical and experimental study on the characteristics of hydraulic jump in a triangular channel. The analytical consideration is based on the momentum conservation law for the upstream and downstream sections of the jump. The experiments were carried out in a triangular channel of glass side walls with the vertex angle of 94.4°. A wide range of discharge...

ژورنال: علوم آب و خاک 2001
حسینی, عطاالله , سهرابی, تیمور , طالبی, خلیل ,

During recent years, worldwide concern has been focused on the potential for contamination of surface waters and ground waters by agrochemicals in runoff and soil water from irrigated fields. Given this perspective, it is very important to correctly evaluate the levels of different agrochemicals in water, both from human toxicological and environmental viewpoints and to develop management strat...

2011
Derek Verleye El Houssaine Aghezzaf

We develop and discuss an operational planning model aiming at minimizing production and distribution costs in large drinking water networks containing buffers with free inflow. Modeling drinking water networks is very challenging due of the presence of complex hydraulic constraints, such as friction losses and pump curves. Non-linear, non-convex constraints result from the relationships betwee...

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