نتایج جستجو برای: flood routing

تعداد نتایج: 76636  

1998
SHUHAI JIANG Shuhai Jiang

After analysing the Wiener process characteristics of reservoir storage capacity in flood regulation, an Ito stochastic differential equation including a random input term is proposed to describe and estimate the stochastic reservoir level hydrograph in a flood routing process. An expression of risk for flood release is given and the probability density functions of the reservoir level hydrogra...

Journal: :Journal of Hydro-environment Research 2011

Journal: :Hydrological Sciences Journal 1986

Journal: :Journal of Hydraulic Engineering 1987

2004
A. R. Ghumman U. Ghani M. A. Shamim

This paper deals with flood routing in rivers using neural networks. The unsteady river flow may be formulated in terms of two one-dimensional partial differential equations. These are the Saint Venant flow continuity and dynamic equations. Several methods of solution of these equations are known. These methods are based upon characteristics of equations, finite difference, finite element and f...

2008

Flooding algorithms are widely used in ad-hoc sensor networks, especially as building blocks of more sophisticated routing protocols. A distributed percolationdriven energy efficient probabilistic flood routing algorithm is proposed, which provides large message delivery ratio with small number of sent messages, using neighborhood information only. The performance of the algorithm is analyzed a...

2005
Hien T Nguyen D. Fenton

An accurate estimation of roughness coefficients is of vital importance in any open channel flow study. In flood routing in natural rivers, most channels have compound sections and the roughness values in main channel and flood plains are usually different. In order to have more accurate results, the roughness of main channel and flood plains should be considered separately. It is possible to i...

ژورنال: علوم آب و خاک 2022

Hydrological models for evaluating and predicting the amount of available water in basins, flood frequency analysis, and developing strategies to deal with destructive floods are expanding daily. In this study, HEC-GeoHMS and Arc Hydro extensions in ArcGIS software and the HEC-HMS model were used to simulate design flood hydrographs in the Aydooghmush basin in the northwest of Iran. SCS-CN, SCS...

1998

INTRODUCTION: The calculation of Manning n values has been of interest since the Manning equation was presented in the late 1800s (Henderson, 1966). While estimation of n vahm for normal channels has been fairly well standardized, the estimation of n values in areas of dense vegetation continues to be subject to large variations depending on the experience of the engineer and the perceived dens...

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