Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: dike-break

Sortuj według:

Ogranicz wyniki do:

Geological Hazard Investigation Combined with Mathematical Modeling in Flood Risk Assessment: A Case Study of Hoang Long River, Ninh Binh Province, Vietnam

Nguyen Nhu Y, Ban To Xuan, Kha Dang Dinh

Inżynieria Mineralna

2023

no. 2, vol. 1

319--325

The primary function of the river dike system is to safeguard lives and property from flood hazards. However, due to aging infrastructure and various geological or anthropogenic factors, certain vulnerable sections of the dike system can emerge as the water level in the river increases. Flood maps are one tool that presents vital information for authorities and residents in the flood risk mitigation. This study's primary goal is to provide a flood map under the dike break condition using the estimated fracture size parameters from a geo-radar survey and the MIKE FLOOD model. This approach addresses the observed research gap by utilizing a survey database instead of relying on empirical models which are capable to produce the conservative estimates of the dike breach outflow. A case study is conducted on the Hoang Long River dike system in Ninh Binh Province, Vietnam.

Solution of the Dike-break Problem Using Finite Volume Method and Splitting Technique

Gąsiorowski D.

TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk

2011

Vol. 15, No 3-4

251-270

In this paper, an approach using the finite volume method (FVM) for the solution of two-dimensional shallow water equations is described. Such equations are frequently used to simulate dam-break and dike-break induced flows. The applied numerical algorithm of the FVM is based on a wave-propagation algorithm, which ensures a stable solution and, simultaneously, minimizes numerical errors. Dimensional decomposition according to the coordinate directions was used to split two-dimensional shallow water equations into one-dimensional equations. Additionally, splitting was also applied with respect to the physical processes. The applied dimensional and physical splitting, together with the wave-propagation algorithm led to an effective algorithm and ensured proper incorporation of source terms into the scheme of the finite volume method. A detailed description of an approximation for numerical fluxes and source terms is presented. The obtained numerical results are compared with analytical solutions, laboratory experiments and other results available in the literature.