نتایج جستجو برای: Infiltration parameters

تعداد نتایج: 628970  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده فنی 1391

the study of air infiltration into the buildings is important from several perspectives that may be noted to energy and design of hvac systems, indoor air quality and thermal comfort and design of smoke control systems. given the importance of this issue, an experimental and numerical study of air infiltration through conventional doors and windows has been explored in iran. to this end, at fir...

ژورنال: علوم آب و خاک 2019

Quantitative description of the spatial variability of soil hydraulic characteristics is crucial for planning, management and the optimum application. Field measurement of infiltration is very expensive, time-consuming and laborious. Soil structure also important effects on water infiltration in the soil. The objectives of this study were to determine the spatial variability of water infiltrati...

Infiltration is the process of water penetration from the ground surface into the soil and is an important process in the hydrological cycle by which surface runoff and groundwater recharge can be linked. Over the years, the importance of the infiltration process resulted in the development of several simplified analytical models for predicting infiltration. These infiltration models range from...

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Infiltration is the process of water penetration from the ground surface into the soil and is an important process in the hydrological cycle by which surface runoff and groundwater recharge can be linked. Over the years, the importance of the infiltration process resulted in the development of several simplified analytical models for predicting infiltration. These infiltration models range from...

Journal: :Journal of Range Management 1989

Journal: :تحقیقات مهندسی کشاورزی 0
فاطمه محرابی کارشناسی ارشد مهندسی آبیاری و زهکشی علیرضا سپاسخواه استاد بخش مهندسی آب دانشکده کشاورزی، دانشگاه شیراز

study of the spatial variability of infiltration characteristics is essential to estimating infiltration parameters on a local scale. the objectives of the present study were to scale the parameters of a philip two-term model for infiltration and survey the variability of infiltration characteristics geostatistically using wastewater in the bajgah catchment. infiltration was measured at 30 poin...

Journal: :آب و خاک 0
قربانی دشتکی قربانی دشتکی همایی همایی مهدیان مهدیان

abstract infiltration is a significant process which controls the fate of water in the hydrologic cycle. the direct measurement of infiltration is time consuming, expensive and often impractical because of the large spatial and temporal variability. artificial neural networks (anns) are used as an indirect method to predict the hydrological processes. the objective of this study was to develop ...

Journal: :تحقیقات آب و خاک ایران 0
غزاله ضیایی کارشناس ارشد آبیاری و زهکشی فریبرز عباسی موسسه تحقیقات فنی و مهندسی کشاورزی حسین بابازاده دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهران فریدون کاوه دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهران

recognition of soil water infiltration process is essential for improving irrigation efficiency, decreasing water losses and management of surface runoff. the aim of this research was to evaluate temporal variation of the kostiakove-louise infiltration coefficient parameters during a corn growing season. in this research, 16 irrigation events for 8 large scale furrow experiments were analyzed b...

Though it is vital to estimate infiltration as one of the key factors in effective management of water resources, only few studies have been carried out either to determine the infiltration or to compare the performance of infiltration models for coarse textured soils. Thus, the present study was conducted to accomplish two objectives. First to estimate the Horton’s infiltration model parameter...

ژورنال: علوم آب و خاک 2015
برومندنسب, سعید, بهزاد, مجید, شینی دشتگل, علی, قهرمان‌نژاد, مصطفی, ناصری, عبدعلی,

Infiltration is the most crucial process affecting surface irrigation uniformity and efficiency as it is the mechanism that transfers and distributes water from the surface to the soil profile. As a direct method of infiltration measurement, the volume balance method requires time, accuracy and high costs. Moreover, before the land preparation and at the research phase the use of this method is...

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