نتایج جستجو برای: flood maximum flow rate

تعداد نتایج: 1630931  

Journal: :international journal of advanced biological and biomedical research 2013
ayat rohina ayob baharani fard nader kazemi kazem abadi asghar mohammadi

several empirical methods for flood flow rate estimation have been presented. in this study,eight new empirical runoff estimation method including dredge & burge, bourges, inglis, faning, hyderabad, burkli ziegler, cramar and possenti were calculated in bakhtegan watershed which is located in fars province. after studying empirical methods for annual flood flow rate estimation and comparing...

موسوی, سیدفرهاد, اسلامیان , سیدسعید, جمشیدنژاد عنبرانی, جعفر , رستم, ناصر ,

Estimation of flood flow rate represents a method of preventing damages associated with this natural phenomenon. This estimation is one basis in the design of various hydraulic structures, dam spillways, watershed management and flood control. The maximum flow rate of floods is determined by methods such as Creager, Jarvis-Meyer, Cypress-Creek, and rational method. Rational-probability method i...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی 1392

flow in natural river bends is a complex and turbulent phenomenon which affects the scour and sedimentations and causes an irregular bed topography on the bed. for the reason, the flow hydralics and the parameters which affect the flow to be studied and understand. in this study the effect of bed and wall roughness using the software fluent discussed in a sharp 90-degree flume bend with 40.3cm ...

ژورنال: علوم آب و خاک 1999
موسوی, سیدفرهاد, اسلامیان , سیدسعید, جمشیدنژاد عنبرانی, جعفر , رستم, ناصر ,

Estimation of flood flow rate represents a method of preventing damages associated with this natural phenomenon. This estimation is one basis in the design of various hydraulic structures, dam spillways, watershed management and flood control. The maximum flow rate of floods is determined by methods such as Creager, Jarvis-Meyer, Cypress-Creek, and rational method. Rational-probability method i...

2016
Judson W. Harvey Jennifer D. Drummond Raleigh L Martin Lauren E. McPhillips Aaron I. Packman

Hyporheic flow in streams has typically been studied separately from geomorphic processes. We investigated interactions between bed mobility and dynamic hyporheic storage of solutes and fine particles in a sand-bed stream before, during, and after a flood. A conservatively transported solute tracer (bromide) and a fine particles tracer (5 μm latex particles), a surrogate for fine particulate or...

Journal: :desert 2012
a.r. keshtkar a. salajegheh m. najafi hajivar

statistical frequency analysis is the most common procedure for the analysis of flood data at a gauged location thatin first step it is needed to select a model to represent the population. among them, the central moment has been themost common and widely used, and with the using of computers, the application of the maximum likelihood hasincreased. this research was carried out in order to reco...

Asghar Mohammadi Ayat Rohina, Ayob Baharani fard Kazem Abadi Nader Kazemi

Several empirical methods for flood flow rate estimation have been presented. In this study,eight new empirical runoff estimation method including Dredge & Burge, Bourges, Inglis, Faning, Hyderabad, Burkli Ziegler, Cramar and Possenti were calculated in Bakhtegan watershed which is located in Fars province. After studying empirical methods for annual flood flow rate estimation and comparing the...

Asghar Mohammadi Ayat Rohina, Ayob Baharani fard Kazem Abadi Nader Kazemi

Several empirical methods for flood flow rate estimation have been presented. In this study,eight new empirical runoff estimation method including Dredge & Burge, Bourges, Inglis, Faning, Hyderabad, Burkli Ziegler, Cramar and Possenti were calculated in Bakhtegan watershed which is located in Fars province. After studying empirical methods for annual flood flow rate estimation and comparing the...

Journal: :محیط شناسی 0
علیرضا کرکوتی دانشجوی کارشناسی ارشد مهندسی عمران – محیط زیست، دانشکده محیط زیست دانشگاه تهران مهرداد نظریها استادیار گروه مدیریت سوانح طبیعی دانشکده محیط زیست دانشگاه تهران اکبر باغوند استادیار گروه مهندسی محیط زیست دانشکده محیط زیست دانشگاه تهران بابک جعفری سلیم دانشجوی کارشناسی ارشد مهندسی عمران – محیط زیست، دانشکده محیط زیست دانشگاه تهران عبدالرضا کرباسی استادیار گروه مهندسی محیط زیست، دانشکده محیط زیست دانشگاه تهران علی وثوق دانشجوی کارشناسی ارشد مهندسی عمران – محیط زیست، دانشکده محیط زیست دانشگاه تهران

computing or determining the amount of maximum flood debit in watershed is one of the main important parts of hydrological research in river improvement. in this regard it is necessary to be distinguished peak of flood flow and its hydrograph for favorable return period. this needs to have long time statistic and leminograph tools in study research area. in this study with the comparison of ava...

Asghar Mohammadi Ayat Rohina, Ayob Baharani fard Kazem Abadi Nader Kazemi

Several empirical methods for flood flow rate estimation have been presented. In this study,eight new empirical runoff estimation method including Dredge & Burge, Bourges, Inglis, Faning, Hyderabad, Burkli Ziegler, Cramar and Possenti were calculated in Bakhtegan watershed which is located in Fars province. After studying empirical methods for annual flood flow rate estimation and comparing the...

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