# Update\_blockMeshDict

![](https://3867130239-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LPHXQ1CBjfLUuUW94tN%2F-LPHXSV32c4bM8DFZc3w%2F-LPHXYXuI3Tzrlkd8vrP%2FUpdate_blockMeshDict.png?generation=1540056834509946\&alt=media)

Update blockMeshDict. -

## Inputs

*   **case \[Required]**

    A butterfly case.
*   **points \[Required]**

    A list of 8 point.
*   **xAxis \[Optional]**

    Optional vector to set xAxis for blockMeshDict (default: (1, 0, 0)).
*   **run \[Required]**

    update blockMeshDict and save it folder.

## Outputs

*   **readMe!**

    Reports, errors, warnings, etc.
*   **case**

    Butterfly case.

[Check Hydra Example Files for Update blockMeshDict](https://hydrashare.github.io/hydra/index.html?keywords=Butterfly_Update%20blockMeshDict)
