نتایج جستجو برای: water discharge

تعداد نتایج: 641898  

Journal: :journal of hydraulic structures 2014
mojtaba rafiee ali mohammad akhond ali hadi moazed steve w. lyon nemat jaafarzadeh

human activities in the recent years have considerably increased the rate of water pollution in many regions of the world. in this case study, the main sources of wastewater discharging into the gargar river were identified. using river and point source flow rates and water quality parameters measured along the river, the river water quality was simulated using a commonly used, one-dimensional ...

Journal: :journal of modern processes in manufacturing and production 0
mojtaba taghizadeh department of mechanical engineering, najafabad branch, islamic azad university, najafabad, iran sayed ali mosavi department of mechanical engineering, najafabad branch, islamic azad university, najafabad, iran

the electro discharge machining (edm), one of the methods used in the machining industry and a non-traditional manufacturing method, the electro erosion process does not depend on the hardness of material and offers a way to process materials of very complex geometry with very fine and high precision by using cheap electrode materials, which make it a preferred method. in this study, effect of ...

ژورنال: تحقیقات موتور 2020
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In this study, the Li-ion batteries temperature increase during the discharge process was measured empirically and evaluated using numerical simulation. Moreover, the battery packs cooling using the water, air and water-nano composition fluids such as water-alumina, water-copper oxide, and water-gold was studied through numerical simulation. Accordingly, the battery cooling was simulated by CFD...

Journal: :journal of rangeland science 2011
nazila sedaei afshin honarbakhsh sayyed farhad mousavi

in this paper, two formulas were chosen among those that estimate the suspendedsediment discharge in rivers. these two formulas were lane and kalinske and bagnold. forstudying and knowing the correlation between input parameters and calculated suspendedsediment discharge (cssd), the spss17 software was used. input parameters in these twoformulas were as: water velocity, water discharge, suspend...

Afshin Honarbakhsh Nazila Sedaei Sayyed Farhad Mousavi

In this paper, two formulas were chosen among those that estimate the suspendedsediment discharge in rivers. These two formulas were Lane and Kalinske and Bagnold. Forstudying and knowing the correlation between input parameters and calculated suspendedsediment discharge (CSSD), the SPSS17 software was used. Input parameters in these twoformulas were as: water velocity, water discharge, suspend...

Journal: :آب و خاک 0
نقوی نقوی فغفور مغربی فغفور مغربی اسماعیلی اسماعیلی خداشناس خداشناس کورش وحید کورش وحید

abstract bottom rack intake is one of the most appropriate structures for diverting water in steep rivers. the problems of corrosion, deformity and clogging of the bottom racks in long term, inspires a new system of bottom intake in which a filled trench of porous media is replaced by the bottom racks. diversion of a specified amount of discharge through the porous media when void space in the ...

Journal: :environmental health engineering and management 0
mohammad fahiminia environmental health engineering, research center for environmental pollutants, qom university of medical sciences, qom, iran mahdi farzadkia environmental health engineering, occupational health research center, school of health, iran university of medical sciences, tehran, iran hossein jafari mansoorian environmental health engineering research center, department of environmental health engineering, kerman university of medical sciences, kerman, iran gharib majidi department of environmental health engineering, school of public health, qom university of medical sciences, qom, iran monireh mirzabeygi arhany department of environmental health engineering, school of public health, qom university of medical sciences, qom, iran narges khanjani department of environmental health, school of public health, kerman university of medical sciences, kerman, iran

background: water resource management is a strategic issue in qom city. water scarcity is one of the most critical concerns of industrial estates. this study aimed to evaluate wastewater management in the shokuhieh industrial park of qom province in 2013. methods: this is a descriptive cross-sectional study done by visiting the industrial units in person, completing questionnaires and analyzing...

Journal: :تحقیقات مهندسی کشاورزی 0
حامد ابراهیمیان دانشجوی دکتری عبدالمجید لیاقت دانشیار دانشکده آب و خاک دانشگاه تهران مسعود پارسی نژاد استادیار دانشکده مهندسی آب و خاک دانشگاه تهران مجتبی اکرم مشاور عالی در مسائل آبیاری و زهکشی کمیته ملی آبیاری و زهکشی ایران

evaluating drainage systems, exploring their strengths and weaknesses, provides a comprehensive perspective to designers and organizers for optimum design and implementation of guidelines for the future. this study was conducted at an experimental site consisting of three plots on a subsurface drainage network under operation in behshahr, a coastal region in northern iran. to evaluate system pe...

Journal: :journal of agricultural science and technology 2013
n. ferjani m. morri h. daghari

in tunisia, kalâat el andalous irrigated district is one of the most affected areas by salinization. the objective of this study was to predict the root zone salinity (over 10 years) in this area using the saltmod simulation model for subsurface drainage system. saltmod is based on water balance, salt balance model, and seasonal agronomic aspects. in the pilot area, irrigated vegetables crops s...

2017
Xiufang Liu Changhai Liu Ze Zhang Liang Chen Yu Hou

The effect of the discharge pressure on the performance of the trans-critical CO2 heat pump with a low gas-cooler outlet temperature is experimentally investigated on a test rig of water source heat-pump water heater. The optimal discharge pressure of the trans-critical CO2 heat pump is investigated under different external operation conditions. When the tap-water temperature is low, the charac...

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