Hello,
I am a user of Nays2Dflood, and I want to know about the numerical method used in this software.
In the documentation, I can’t find anything except continuous shallow water equations and also shallow water in curvilinear coordinates.
Though, I can’t find a description of the discrete maths behind the simulator and I would also like to know if there is any pre-treatment of input data so to ensure stability. I couldn’t find those details in the documentation.
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Thank you for using Nays2dFlood.
I am sorry, there is no detailed documentation for Nays2dFlood.
But there is a belief description of finite differential method used in Nays2dFlood, which is a 2-dimentional shallow water unsteady flow model.
https://i-ric.org/yasu/master_e/Hydraulics%285%29.pdf
This presentation file is the one I use in master course class lectures.
I hope it helps you understanding the numerical techniques of Nays2dFlood.
Nays2DFlood is a 2D hydrodynamic modeling software used for simulating flood events in rivers and coastal areas. The software is based on the shallow water equations, which are a simplified set of equations used to model the behavior of water in shallow regions.
The numerical model used in Nays2DFlood solves the shallow water equations using a finite element method. The software uses an adaptive mesh refinement algorithm to dynamically adjust the size and resolution of the computational mesh based on the flow dynamics, which helps to optimize computational efficiency and accuracy.
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