In the check point file, the expansion coefficients of the flow fields are stored based on the number of modes and the expansion type defined in the session file. You are correct that the FieldConvert reads the coefficients data in the checkpoint file and then evaluates the physics values at the equispaced points. This evaluation is exact. I don't think you need to specify the number of modes or expansion type in this process.

Research Associate

Department of Modern Mechanics

University of Science and Technology of China

-----Original Messages-----
From:"Nico Clinco" <nicoclinco@gmail.com>
Sent Time:2024-01-29 15:44:39 (Monday)
To: nektar-users@imperial.ac.uk
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Subject: [Nektar-users] FieldConvert: problem in specifying the number of equispaced points

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Dear All,
i'm trying to use the FieldConvert utility with the option "-n" to specify the number of points for equispaced interpolation in each direction. I have attached in the pic below what happens if i try the command (i receive a bad_alloc error).

I think that FieldConvert use the modes specified in the session file to interpolate at a set of equispaced points. I was wondering if it is possible to specify the number of modes and also the types for the interpolation.

Thanks in advance.
Nicola