# How to convert own FEM/CFD data file into VTK or other format for PARAVIEW visualization

**URL:** https://discourse.paraview.org/t/how-to-convert-own-fem-cfd-data-file-into-vtk-or-other-format-for-paraview-visualization/3821
**Category:** ParaView Support
**Tags:** vtk
**Created:** [March 15, 2020, 4:27pm UTC](https://discourse.paraview.org/t/how-to-convert-own-fem-cfd-data-file-into-vtk-or-other-format-for-paraview-visualization/3821 "2020-03-15T16:27:58Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Harry.Mavridis](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/h/6f9a4e/32.png) [@Harry.Mavridis](https://discourse.paraview.org/u/Harry.Mavridis)
#### Post date: [March 15, 2020, 4:27pm UTC](https://discourse.paraview.org/t/how-to-convert-own-fem-cfd-data-file-into-vtk-or-other-format-for-paraview-visualization/3821/1 "2020-03-15T16:27:58Z")

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Greetings. I have struggled to put my data into the “right” VTK format for PARAVIEW visualization (I tried unsuccessfully). “My data” are 2-D FEM/CFD results of a non-isothermal flow problem (velocities and pressure) using 9-node isoparametric quadrilateral elements (but I can use 8-node elements, or the 4-node elements, if needed).

Any help would be appreciated.

Thanks - Harry.

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### Author: ![mwestphal](https://discourse.paraview.org/user_avatar/discourse.paraview.org/mwestphal/32/17_2.png) [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [March 16, 2020, 2:26am UTC](https://discourse.paraview.org/t/how-to-convert-own-fem-cfd-data-file-into-vtk-or-other-format-for-paraview-visualization/3821/2 "2020-03-16T02:26:19Z")

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Please explain what are you trying to do in more details, writing a .vtk on disk ? Converting to VTK data structures ?

Please state what is working and what is not working.