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Register a new userStudy Flood Wave Caused By Kodana Dam Break Using HEC-RAS Program
دراسة موجة فيضان ناتجة عن انهيار سد كودنه باستخدام برنامج الHec-Ras
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امتثال مريم( باحث )
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يتضمن هذا البحث دراسة احتمال انهيار سد كودنه الذي يقع على وادي الرقاد في محافظة القنيطرة، حيث تًم تسليط الضوء على مفهوم انهيارات السدود و أشكال فتحة الانهيار فيها باستخدام برنامج الhec-ras, كما تضمن هذا البحث مناقشة بعض سيناريوهات الانهيار ، و اختيار السيناريو الأخطر حيث استطاع تحديد زمن وصول الموجة الفيضانية إلى كل مقطع عرضي.
This research involves the study of collapse's possibility of Codana dam, which is located on Al-Rakad valley in Quneitra governorate. The light had been shed on: the concept of dam's collapse, forms of collapse slots by using Hec-Ras program, Also it had been shown the reliable collapse scenarios and choose the worst one when the access time of flood wave could be identified for every cross-section.
References used
BRUNER.G, 2010- HEC-RAS User's Manual. CPD-68, p 790
WAHL, T. 1998 -Prediction of Embankment Dam Breach Parameters. U.S. Department of the Interior, p.72
CAMERON. T, ACKERMAN. P, May 2012 -Hec-GeoRas GIS Tools for Support of Hec-Ras using ArcGIS 10. User's Manual, CPD-83, p520
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Thousands of dams have been built around the world, but, the date of construction is
associated with a history of failures and collapse, due to the high water levels, generating
higher returns consequences disastrous for the environment and society
, when dam fails
released very large amounts of water threatened the lives of persons and property, it
returns to the short time available for warning and evacuation.
This paper provides an overview of the most important reasons for the collapse, with
a study about possibility failure product from supposed breach in 16 Tishreen dam, caused
by the flow of water over the top, where the predicted of breach that leading to collapse is
done and determine its characteristics, namely: High, width, time required to development
of the breach, the maximum flow out of it, and also generate flood maps that represent the
limits of the spread of flood wave downstream, in addition tosuggest a simplified plan for
the evacuation
Results led to the flooded wave caused by the collapsehurtling loaded
adischargeabout 54631 , causes a wall of water with 17 meters high moves
through the downstream river with 14 m/sec speed, the wave spreadover 45.24
,causing submerge for 7 villages the most important of it Stkhers and Rodo which are
completely submerged, and 30 economical facility the most important of it industrial area
that also completely submerged, the water depths ranged from 2 to 17 meter, which
causing heavy casualtiesand damage about 30000 people, and more than 7000peopleare
expected to die, unless the actual preparations of emergency plan.
This research aims to check the actual performance of the work of the propeller
depending on series of results issued from Hamburg basins that are known by RANSE
where the arcs analysis and the hydrodynamic characteristics of the propeller work in
open
water are done by using the commercial program CFD Analysis m by Hydro Comp.
Thus, the results were compared with the experimental data and the study of fluently
around the different parts of the ship and the definition of resistance values and friction
factor CF. These values were compared with those issued by ITTC basins and coincidence
was found between those of RANSE and the experimental values in the different stages of
study.
Therefore, a collection of solutions related to the work of propeller were achieved in
addition to the evaluation of the level of interaction and the exchanged effect of the
propeller work in different conditions, and the definition of degree of difference resulted
from the values of the rotation moment and the factors of advance and control the are
resulted from the use of CFD program. The numerical results and the syntheses data were
discussed in case of working in open water.
The goal of this work is finding exact solitary wave solutions to generalized Fitzhug-Nagumo equation with constant coefficients, by using the exp-function method, where we have illustrated graphically one of them, the obtained results, with aid of s
ymbolic programs as Maple and Mathematica, show that this method is simple, direct and very efficient for solving this kind of nonlinear PDEs, and it requires no advanced mathematical knowledge, so it is convenient to scientists and engineering.
This research is concerned in modeling the problem of sloshing in
moving cylindrical containers in ANSYS program where we model
the problem on a partially filled cylinder then we find the resonant
frequencies in addition to study the interaction between the cylinder
and the fluid.
Joints study in Skhaba region shows the existence two joint directions, principal dominant
NW-SE Joints from extension origin upper Cretaceous age, unrelated and older than faults
in studied area statistically, the presence of Calcareous filling in
the joints that is supported
the extension origin in the first phase. Secondary NE-SW joints from Miocen-Pliocen in
age, and from extension origin ,related to the formation of faults, most of them contain thin
iron crust in secondary phase.
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