Re: [Gfs-users] About CFL number

[Pierre-Yves L. (PYL) <pie...@up...>]

Dear Jason

> I am wondering if anybody can tell me how to change the CFL number. I have tried to realize it like this 
> 
>     AdvectionParams { cfl = 0.8 },
> 
> but it turns out that the warnings emerging on the terminal during the simulation still keep saying "the CFL number at a  certain point is larger than 0.5". Why isn't the setting working?

Well, it is a "warning", not an "error". So it works


> And if I want to reduce the time per step, should I decrease the CFL number?

exactly

Cheers
>  

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