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Specific storage and specific yield values in transient model


dvsnunna
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Dear All,

Im running transient model and following are the things i have done .

1. In the material properties assigned values of SS and SY.

2. Solids >>> Modflow

After solids to modflow operation, when im checking SS values of grid (Modflow>> LPF Package>>SS) it is showing SY values instead of SS and vice versa. Why it is doing like this??? Anybody Please help me..

Edited by dvsnunna
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This is a bug. We apologize for the inconvenience. We are looking into getting this fixed.

One workaround would be:

- Change the LPF Package dialog and change to "Use material Ids" instead of "Use data arrays"

- Run Solids -> MODFLOW again

This won't work if you need to change some of the material properties arrays after running Solids -> MODFLOW. A workaround would be to go in the array editor for each, save the values to data sets, and then set the values to the correct ones from the arrays editors. This could be done as follows:

- Go into the Specific Storage array editor from the LPF Dialog

- Click on the Grid -> 3D Data Set button

- Enter a data set name like "Specific Yield"

- Hit okay twice to exit the dialogs

Then the same for specific yield:

- Go into the Specific Yield array editor from the LPF Dialog

- Click on the Grid -> 3D Data Set button

- Enter a data set name like "Specific Storage"

- Hit okay twice to exit the dialogs

Then copy the data sets to the proper arrays:

- Go into the Specific Storage array editor from the LPF Dialog

- Click on the 3D Data Set -> Grid button

- Select the Specific Storage data set

- Hit okay twice to close out of the dialogs

- Go into the Specific Yield array editor from the LPF Dialog

- Click on the 3D Data Set -> Grid button

- Select the Specific Yield data set

- Hit okay twice to close out of the dialogs

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With a version of GMS with this bug and the values swapped, once you run solids -> MODFLOW the values will save and MODFLOW will run correctly with the current version. But if you then change over to using materials IDs or if you update to the version of GMS that has this fixed (which we haven't yet released), it won't work correctly. That's why I recommended going through the steps in my previous post.

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