Overflow error

[Muhammed Irshad P]

RuntimeWarning: invalid value encountered in multiply   temp *= 1 / gdata.shape[axis], What is the cause of this error? PFA the code and screenshot of the error. Here u, v, T, D, and b are variables. If you think of any kind of logical error in this code, please point out that also.

[Keaton Burns]

Hi Muhammad,

This usually happens because your simulation is underresolved in space or time. In this case, it looks like you have no implicit terms to help regularize your equations. Usually you need some form of viscosity or other dissipation / diffusion on the LHS to maintain stability with a spectral method, since there is no numerical diffusion from the grid.

Best,

-Keaton

On Aug 6, 2022 at 3:33:31 AM, Muhammed Irshad P <irshadp...@gmail.com> wrote:

RuntimeWarning: invalid value encountered in multiply   temp *= 1 / gdata.shape[axis], What is the cause of this error? PFA the code and screenshot of the error. Here u, v, T, D, and b are variables. If you think of any kind of logical error in this code, please point out that also.

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