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0014528

Xdmf

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public

2013-10-31 10:04

2015-05-14 15:53

Reporter

Håkon Strandenes

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normal

Severity

feature

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N/A

Status

new

Resolution

open

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OS Version

Summary

0014528: Polyhedral grid cell support in XDMF

Description

Currently, the HDF5+XDMF approach is an easy and effective way of writing data from large parallel simulations to disk. The HDF5 library is actively developed, and is proven to perform well. Other options are often either not capable of writing large parallel datasets or is not as easy to use.

However, many CFD codes nowadays use so-called polyhedral grid cells. These cells can be of general shape and is build up of a number of faces, which again is build from nodes. A major weakness of the current XDMF format is that it is not possible to define and store these cells in the current framework.

I think that adding polyhedral grid cell support in XDMF would be a welcome improvement and would lead to more projects using XDMF.

Additional Information

I have developed a simple HDF5/XDMF writer for OpenFOAM, and more information is found here: http://www.cfd-online.com/Forums/openfoam-programming-development/122579-hdf5-io-library-openfoam.html [^]

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Notes
(0036164) Armin Wehrfritz (reporter) 2014-06-12 08:30	I would also appreciate polyhedral cell support in XDMF to make this otherwise very good file format more attractive for CFD codes like OpenFOAM! The implementation shouldn't be too complicated, since it is already implemented in VTK: http://www.vtk.org/Wiki/VTK/Polyhedron_Support [^] There has also been a discussion among visit developers about this issue: http://visitbugs.ornl.gov/issues/1279 [^]

(0038749) Lucas Clemente Vella (reporter) 2015-05-14 15:53	I need such functionality, too.

Issue History
Date Modified	Username	Field	Change
2013-10-31 10:04	Håkon Strandenes	New Issue
2014-06-12 08:30	Armin Wehrfritz	Note Added: 0036164
2015-05-14 15:53	Lucas Clemente Vella	Note Added: 0038749