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.