نتایج جستجو برای: نرم افزار hec ras

تعداد نتایج: 108128  

Journal: :LAUTECH Journal of Civil and Environmental Studies 2023

Bridges are crucial for transporting people and goods, but their failures can be catastrophic, resulting in loss of life property. This study assessed the flood stage selected bridges (Alaafin Avenue, Seven-Up, Oluyole) along Ona River, Ibadan, Nigeria, using a one-dimensional model called Hydraulic Engineering Center-River Analysis System (HEC-RAS). The requires two major input data: geometric...

Journal: :Water 2022

An application is presented of a new methodology for the real-time operations river-reservoir systems. The based upon an optimization/simulation modeling approach that interfaces optimization with one and/or two-dimensional unsteady flow simulation model (U.S. Army Corps Engineers HEC-RAS). also includes short-term rainfall forecasting, and U.S. HEC-HMS rainfall-runoff modeling. Both forecasted...

Journal: :Europan journal of science and technology 2022

Nevşehir Hacı Bektaş Veli Üniversitesi, Bilimsel Araştırma Projeleri Birimi tarafından desteklenen ve 2017 yılında tamamlanan “Saha Çalışmaları Nümerik Modeller Kullanılarak Kızılırmak Havzasında Sediment Taşınımı Birikiminin Analizi” başlıklı proje kapsamında ili sınırları içerisinde nehri üzerinde yedi farklı ölçüm noktasında akarsu taban topoğrafyası akım ölçümleri gerçekleştirilmiştir. Proj...

Journal: :Water 2023

The objective of this study was to assess the performance form-based and process-based models, local-scale reach-scale used examine bank retreat sediment transport in stream restoration. evaluated models were Bank Erosion Hazard Index (BEHI), Assessment for Nonpoint Source Consequences Sediment (BANCS), Stability Toe Model (BSTEM), HEC River Analysis System (HEC-RAS 1D). Model-to-model assessme...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده کشاورزی 1393

در این تحقیق در یک مثال عملی با بهره گیری از تلفیق دو نرم افزار hec-ras و ces که جزو روش های یک بعدی هستند، پهنه سیل گیر رودخانه زشک محاسبه شده است و نتایج حاصله با اتخاذ رویکرد دوبعدی مقایسه خواهد شد. بررسی ها نشان می دهند که اثر دادن تنش برشی ظاهری و همچنین لحاظ اثرات جریان های ثانویه بر جریان اصلی در کانال های مرکب، رویکرد خوب و قابل قبولی برای تخمین دبی در این کانال ها ارائه می کند. پیاده ک...

ژورنال: علوم آب و خاک 2016
دلیران فیروز, هدی, سلطانی , سعید , مختاری خوزانی, فهیمه , موسوی, سید علیرضا ,

Floods are considered as most destructive among all natural hazards which impose lots of damages on human societies. Hence, it is important to estimate such damages and losses and to determine flood impact areas for management plans. HEC-FIA software as a new model (Sep. 2012) was used in Ghohrood and Ghamsar watershed basins to estimate flood-driven losses and impacts. In this model, HEC-RAS a...

Journal: Desert 2009
A. Salajegheh A.R Keshtkar M. Bakhshaei M. Najafi Hajivar S. Chavoshi

Abstract A significant deficiency of most computer models used for stream floodplain analysis is that the locations of structures impacted by floodwaters, such as bridges, roads, and buildings, cannot be effectively compared to the floodplain location. This research presents a straightforward approach for processing output of the HEC-RAS hydraulic model, to enable two- and three dimensional f...

Journal: :Journal of The Korean Society of Agricultural Engineers 2012

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