Small flow links https://dlt-acc.firelay.cloud/en/c/message_boards/find_thread?p_l_id=4041874&threadId=4391875 2026-05-12T15:58:43Z 2026-05-12T15:58:43Z Haihong Zhao https://dlt-acc.firelay.cloud/en/c/message_boards/find_message?p_l_id=4041874&messageId=4391878 2021-06-24T19:49:51Z 2021-06-24T19:49:51Z

Hello! Has this issue resolved? I ran into the same problem. "Merge Circumcenters" in RGFGRID won't do anything to the mesh. Wondering if you have a solution.

Haihong Zhao 2021-06-24T19:49:51Z Jing Zhao https://dlt-acc.firelay.cloud/en/c/message_boards/find_message?p_l_id=4041874&messageId=4392424 2018-01-15T14:29:20Z 2018-01-15T14:29:20Z

Dear Christopher,<br /><br />What is the version number of your RGFGRID?<br /><br />Kind regards,<br /><br />Jing

Jing Zhao 2018-01-15T14:29:20Z Christopher Oertel https://dlt-acc.firelay.cloud/en/c/message_boards/find_message?p_l_id=4041874&messageId=4392309 2017-11-21T15:33:40Z 2017-11-21T15:33:40Z

Ok, this operation does not exist in my version of RGFGRID.<br /><br />Does anyone knows another possibility to remove the small flow links. Or maybe some options in settings to prevent the generation of small flow links...<br /><br />Thanks!<br /><br />Regards <br />Christopher

Christopher Oertel 2017-11-21T15:33:40Z Sebastian Martijena https://dlt-acc.firelay.cloud/en/c/message_boards/find_message?p_l_id=4041874&messageId=4392302 2017-11-16T19:18:02Z 2017-11-16T19:18:02Z

Hi Christopher,<br /><br />I&#39;m sending a copy of what RGFGRID Manual says:<br /><br />&#34;Merge Circumcenters<br />An irregular grid can be used to calculate water flow. This involves a pressure gradient between<br />the circumcenters of neighbouring cells. That procedure is numerically unreliable when<br />the distance between said circumcenters becomes too small. The option Merge Circumcenters<br />merges such neighbouring cells, also called remove small flow links&#34;<br /><br />This option is under menu options, Operations --&gt; Grid --&gt; Merge Circumcenters<br /><br />Sebastian.

Sebastian Martijena 2017-11-16T19:18:02Z Christopher Oertel https://dlt-acc.firelay.cloud/en/c/message_boards/find_message?p_l_id=4041874&messageId=4391874 2017-11-16T14:57:31Z 2017-11-16T14:57:06Z

Hello at all!<br /><br />I got some problems generating an unstructed grid with RGFGRID 5.00.01.42802 (Win64). <br />Sometimes everything is fine and there is no error when loading the grid into Delta Shell.<br />But sometimes it says:<br /><br />&#34;The kernel reported the following error(s):<br />** ERROR : 2 small flow links discarded. Run remove small flow links or increase trhs.&#34;<br /><br /><br />I cannot identify the location of these small flow links. When do small flow links appear? <br />Is there a possibility to find/remove them?<br /><br /><br />Thanks for help!<br />Regards Christopher

Christopher Oertel 2017-11-16T14:57:06Z