コメント

1. KeitaHoshino より:

   2024年03月27日 9:16 AM

   hi jac

   Please Check out FAQ below.
   https://i-ric.org/en/help/faq/

   If the calculation diverges, it is effective to more increase the mesh size or reduce the time step.
   Sorry, but it’s difficult to identify the problem with just the riv file and the information in your question.

   I have attached the calculated ipro. please make sure.
   DaliahStream.ipro

   Keita

2. KeitaHoshino より:

   2024年03月27日 3:42 PM

   hi jac

   I may have predicted the reason why you couldn’t calculate it.
   It seems like you used “Create grid from cross-section data” to create the grid, but I believe the issue might have been with the position of the river centerline at that time.
   Did you select “Where the elevations is smallest in low water way” when importing the riv file? In “Create grid from cross-section data,” the positions of Indexes 2 and 3 of the riv file are automatically set as division points. However, in your riv file, Index 2 is at the lowest position, causing the river centerline and division points to overlap. Consequently, extremely small cells with almost zero width are created, likely causing the divergence in the calculation.
   https://i-ric.org/webadmin/wp-content/uploads/2024/03/snapshot_.png

   The specifications for the riv file are located here.
   https://iric-gui-user-manual.readthedocs.io/en/latest/06/01_riversurvey.html#cross-section-file-riv

   To resolve the issue, first place the river centerline in the correct position, then reset the “Grid Creating Condition” and re-add the division points.

   Instructions on how to edit the centerline of cross-sectional survey data can be found here.
   https://iric-gui-user-manual.readthedocs.io/en/v4_en/04/04/03_riv_data.html#shift-center-h

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