I am solving an unsteady fluid mechanics problems with a large mesh (almost 9 million cells). I am using two different methods to save the timeseries data. One is through write and the other with write_checkpoint. I am storing these timeseries data in two formats primarily for visualization and pos…

You are right, in write checkpoint, you cannot reuse the mesh. Have you tried using HDF5File (it is not possible to open in paraview, But can do check pointing: https://bitbucket.org/fenics-project/dolfin/raw/946dbd3e268dc20c64778eb5b734941ca5c343e5/python/test/unit/io/test_HDF5_series.py ) By brows…

Hi Dokken, I tried that. But write_checkpoint ignores the rewrite_function_mesh=False flag. rewrite_function_mesh works only with write but not with write_checkpoint. I am post-processing the data to calculate Wall Shear Stress and other metrics after the end of the simulation. I use read_checkpoi…

Here’s a MWC for the problem at hand. writer = {} writer[key] = dolfin.XDMFFile(MPI.comm_world, value) writer[key].parameters["flush_output"] = True writer[key].parameters["functions_share_mesh"] = True writer[key].parameters["rewrite_function_mesh"] = False components = {"u0": u_[0], "u1": u_[1],…

I haven’t tried using HDF5File. I can try it out. Is it possible to read HDF5File into Fenics for the post-processing part?

Yes, see the link in the previous post.

[image] dokken: https://bitbucket.org/fenics-project/dolfin/raw/946dbd3e268dc20c64778eb5b734941ca5c343e5/python/test/unit/io/test_HDF5_series.py Okay, I will try it out and shall get back. Thank you dokken!!

Write_checkpoint rewrite mesh

I/O

dokken September 23, 2020, 5:49am 2

See for instance How to write a XDMF file which has mesh static over time?

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Write_checkpoint rewrite mesh

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