TELEMAC-MASCARET Forum: Courant Number for Big Time Steps (1/1)

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TOPIC: Courant Number for Big Time Steps

Courant Number for Big Time Steps 2 years 2 hours ago #41625

Romero64 OFFLINE Junior Boarder Posts: 40 Thank you received: 1	I was trying to use a bigger time step of 400 seconds and aiming to verify the numerical stability, I've used the keyword: SCHEME ADVECTION FOR VELOCITIES = 5 Then, I got this error in the image. This means an error due to Courant Number > 1? Thank you all.
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Courant Number for Big Time Steps 1 year 11 months ago #41630

pham
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Posts: 1559
Thank you received: 602

Hello,

We cannot see any image. Be careful with the extension you use with the name of the file.

400 s is quite big but it can work if you have local velocities and size of the elements compatible with it (generally very low velocities or nil + quite big size of triangles). Can you give more information about them?

If you got an error, the first advice is to decrease the time step (once or more).

Chi-Tuan

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