# Postprocessing steps of Fluent files (.cas.h5 and .dat.h5 )
**URL:** https://discourse.paraview.org/t/postprocessing-steps-of-fluent-files-cas-h5-and-dat-h5/15644
**Category:** ParaView Support
**Created:** [October 26, 2024, 8:59am UTC](https://discourse.paraview.org/t/postprocessing-steps-of-fluent-files-cas-h5-and-dat-h5/15644 "2024-10-26T08:59:21Z")
**Posts on this page:** 12
**Page:** 1
### Author:  [@SKSoni](https://discourse.paraview.org/u/SKSoni)
#### Post date: [October 26, 2024, 8:59am UTC](https://discourse.paraview.org/t/postprocessing-steps-of-fluent-files-cas-h5-and-dat-h5/15644/1 "2024-10-26T08:59:21Z")
Dear All,
I am new in postprocessing for Ansys fluent flies ( .cas.h5 and .dat.h5 ) in ParaView.
While uploading the files in Paraview I am getting following errors:
**ERROR: In vtkExecutive.cxx, line 730**
Can anyone suggest processing these files in Paraview?
Thanks.
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### Author:  [@cory.quammen](https://discourse.paraview.org/u/cory.quammen)
#### Post date: [October 27, 2024, 7:04pm UTC](https://discourse.paraview.org/t/postprocessing-steps-of-fluent-files-cas-h5-and-dat-h5/15644/2 "2024-10-27T19:04:48Z")
Please post the full error message. If possible, please share example data files to help debug.
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### Author:  [@SKSoni](https://discourse.paraview.org/u/SKSoni)
#### Post date: [October 28, 2024, 6:57pm UTC](https://discourse.paraview.org/t/postprocessing-steps-of-fluent-files-cas-h5-and-dat-h5/15644/3 "2024-10-28T18:57:53Z")
Dear @cory.quammen
Thanks for addressing this issue.
Here are the files for .cas.h5 and .dat.h5 that I want to import into Paraview.
[https://www.dropbox.com/scl/fi/xyu3erw7n8una82a1n9j4/0142\_1001\_volume-1.cas.h5?rlkey=igrcis4jo7fljxh7rhu1b719z&st=5wejb88q&dl=0](https://www.dropbox.com/scl/fi/xyu3erw7n8una82a1n9j4/0142_1001_volume-1.cas.h5?rlkey=igrcis4jo7fljxh7rhu1b719z&st=5wejb88q&dl=0)
[https://www.dropbox.com/scl/fi/kfgz8nv3k10ppgdmrazxq/0142\_1001\_volume-1-0.080000.dat.h5?rlkey=y5o1zqusf1lh8jvi80nba3ioz&st=5g6s8wrn&dl=0](https://www.dropbox.com/scl/fi/kfgz8nv3k10ppgdmrazxq/0142_1001_volume-1-0.080000.dat.h5?rlkey=y5o1zqusf1lh8jvi80nba3ioz&st=5g6s8wrn&dl=0)
Thanks
SK
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [October 29, 2024, 10:36am UTC](https://discourse.paraview.org/t/postprocessing-steps-of-fluent-files-cas-h5-and-dat-h5/15644/4 "2024-10-29T10:36:23Z")
Hi @SKSoni
I had to rename your `.dat.h5` so that it matches the `.cas.h5` name and then ParaView 5.13.1 is able to open your file without issues:
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### Author:  [@SKSoni](https://discourse.paraview.org/u/SKSoni)
#### Post date: [October 29, 2024, 4:30pm UTC](https://discourse.paraview.org/t/postprocessing-steps-of-fluent-files-cas-h5-and-dat-h5/15644/5 "2024-10-29T16:30:00Z")
Hello @mwestphal
Thanks for your kind support.
However, can you please tell mention the initial steps of importing the file, such as file loader and contour plotting steps.
Thanks
SK
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [October 30, 2024, 5:54am UTC](https://discourse.paraview.org/t/postprocessing-steps-of-fluent-files-cas-h5-and-dat-h5/15644/6 "2024-10-30T05:54:20Z")
> [@SKSoni](#):
>
> the initial steps of importing the file,
File → Open → 0142\_1001\_volume-1.cas.h5 → Apply
> contour plotting steps.
There is no contour computation, this is just your file
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### Author:  [@SKSoni](https://discourse.paraview.org/u/SKSoni)
#### Post date: [October 30, 2024, 7:14am UTC](https://discourse.paraview.org/t/postprocessing-steps-of-fluent-files-cas-h5-and-dat-h5/15644/7 "2024-10-30T07:14:12Z")
Thanks for your quick response.
I have also followed the same steps and it has no error for .cas.h5 file. However, when it comes for .dat.h5 file, then the following error is showing.
################
ERROR: In vtkTecplotReader.cxx, line 2159
vtkTecplotReader (000001C0EB302C30): D:\acad-diat\IITK-Project\model-sample-run\modelsample\_files\dp0\FFF\Fluent\0142\_1001\_volume-1-0.040000.dat.h5: The record type �HDF found in the file is unknown.
################
Actually, .dat.h5 file contains the fluent solution at particular time step.
Kindly suggest to fix it for dat.h5 ansys fluent file.
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [October 30, 2024, 7:14am UTC](https://discourse.paraview.org/t/postprocessing-steps-of-fluent-files-cas-h5-and-dat-h5/15644/8 "2024-10-30T07:14:55Z")
The .dat.h5 is not supposed to be open directly, it is a companion file to the .cas.h5
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### Author:  [@SKSoni](https://discourse.paraview.org/u/SKSoni)
#### Post date: [October 30, 2024, 10:12am UTC](https://discourse.paraview.org/t/postprocessing-steps-of-fluent-files-cas-h5-and-dat-h5/15644/9 "2024-10-30T10:12:51Z")
Here is the only one .cas.h5 file is generated during fluent output.
Please correct me, in case i want to analyse the result for any result of .dat.h5 file then I need to import both .cas.h5 and .dat.h5 file together.
For example, from attached screenshot, for results visualization of dat file [**0142\_1001\_volume-1-0.090000.dat.h5**], i have to import the cas file **0142\_1001\_volume-1.cas.h5** along with it in paraview.
Please suggest!
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [October 30, 2024, 10:14am UTC](https://discourse.paraview.org/t/postprocessing-steps-of-fluent-files-cas-h5-and-dat-h5/15644/10 "2024-10-30T10:14:40Z")
Your combination of .cas.h5 and .dat.h5 seems to be not supported of the Fluent CFF reader of ParaView yet I’m afraid.
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### Author:  [@SKSoni](https://discourse.paraview.org/u/SKSoni)
#### Post date: [October 30, 2024, 11:40am UTC](https://discourse.paraview.org/t/postprocessing-steps-of-fluent-files-cas-h5-and-dat-h5/15644/11 "2024-10-30T11:40:43Z")
I am using Ansys 24R1.
Can you suggest the compatible files of Fluent outputs that can be supported while plotting in Paraview.
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [January 6, 2026, 9:03am UTC](https://discourse.paraview.org/t/postprocessing-steps-of-fluent-files-cas-h5-and-dat-h5/15644/12 "2026-01-06T09:03:03Z")
A post was split to a new topic: [dat.h5 series](https://discourse.paraview.org/t/dat-h5-series/17391)