Floods are the world's most destructive natural disasters. Scientists need to understand and grasp these phenomena in order to guide and assist decision-makers. In this case, we must solve the Shallow Water Equations (SWE) that regulate free surface flows, which necessitates the use of numerical approximations. The methodologies utilised have a direct impact on the results obtained. Fortunately, as computing has progressed, researchers and engineers have continued to develop more and more efficient tools that employ a variety of techniques. In order to compare the classical methods, this study recommends using two prominent free software: finite differences and finite volumes. The finite difference approaches involve discretizing a problem using a specified mesh (generally rectangular). The finite volume method divides the flow domain into a large number of control volumes (or cells), which are then used to perform mass and momentum balances. The distribution of water depths and the flow velocity field throughout the computational area are the outcomes, which lead to understanding of the flood's spread and general dynamics. The research is based on a high-resolution DTM model of a segment of the Sambirano river in Madagascar during the flood season (Digital Terrain Model). According to research, the finite volume method with an unstructured triangular mesh is best for modelling shallow water flows in a natural setting.
Author (S) Details
Mamisoa Randriamparany
Thematic Doctoral School – Renewable Energies and Environment, Antsiranana University, Hydraulic Laboratories, Madagascar
Justin Ratsaramody
Department of Hydraulics Engineering, Antsiranana University, Madagascar.
Michel Randriazanamparany
Department of Hydraulics Engineering, Antsiranana University, Madagascar.
View Book :- https://stm.bookpi.org/NAER-V11/article/view/3566
No comments:
Post a Comment