Can the NGSolve provide other file forms for output data expect ".vtk"?

Main Forum Old-Forum - do not post here
1

Dear all,

I have obtained a set of data including discrete velocity and pressure from solving the Navier-Stokes equations. I know only how to output them by a vtk file, which cannot work on Tecplot. So, there are other file forms, like .dat, .plt., which can applied on Tecplot? If yes, what are their commands?
PS: the following is an example of outputing discrete data:

vel = gfu.components[0]
vtk = VTKOutput(ma=mesh, coefs=[vel], names=["velocity"],\
                filename="velocity", subdivision=2)
vtk.Do()

Kind regards,

Di Yang

2

Hi Di Yang,

unless you initialise the VTKOutput with legacy=True, VTU files will now be written (if you have a relatively new version of NGSolve), which I believe tecplot can open.

Best wishes,
Henry

3

Hi Henry,

Thank you for your reply. I have no idea of initialising the VTKOutput with legacy=True. What is the command in detail? Because the following command

vtk = VTKOutput(legacy=True, ma=mesh, coefs=[v100], names=["v100"],\
                filename="velocity", subdivision=2)
vtk.Do()

is not correct.

Best,

Di Yang

4

Hi Di Yang,

in principle

vtk = VTKOutput(ma=mesh, coefs=[v100], names=["v100"],
                filename="velocity", subdivision=2)
vtk.Do()

is correct. Adding the legacy=True argument will write vtk files (rather than vtu). However, the vtu output is very new! You need a nightly build of NGSolve or build from the current master branch, as this update to the VTKOutput was introduced after the release of v6.2.2004.

Best wishes,
Henry

5

Hi Henry,

In Paraview, vtk files can be tranformed into vtu files. Thank u.

Best,

Di