# Difference of two temperature fields between two openFOAM projects

**URL:** <https://discourse.paraview.org/t/difference-of-two-temperature-fields-between-two-openfoam-projects/17816>\
**Category:** ParaView Support\
**Created:** [November 15, 2026, 11:31am UTC](https://discourse.paraview.org/t/difference-of-two-temperature-fields-between-two-openfoam-projects/17816 "2026-11-15T11:31:57Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Kenneth\_Moreland](https://discourse.paraview.org/user_avatar/discourse.paraview.org/kenneth_moreland/32/15033_2.png) [@Kenneth\_Moreland](https://discourse.paraview.org/u/Kenneth_Moreland)\
**Post date:** [November 15, 2026, 3:48pm UTC](https://discourse.paraview.org/t/difference-of-two-temperature-fields-between-two-openfoam-projects/17816/2 "2026-11-15T15:48:39Z")

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I couldn’t download your data because I don’t have permissions. The usual way to compare data on two volumes occupying the same space but with different grids is to first run **Resample With Dataset** to first interpolate the fields from one grid to the other. You can then use the **Append Attributes** to combine the fields of two (or more) pipeline objects into the same dataset. Finally, you can use the **Calculator** filter to compute difference metrics between the two fields.

You can find more information about this process in other posts such as this one: [Superposition effect - #17 by Kenneth\_Moreland](https://discourse.paraview.org/t/superposition-effect/10950/17)

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