{"id":370981,"date":"2024-07-08T15:39:41","date_gmt":"2024-07-08T15:39:41","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ansys-fluent-rocky-dem-coupling-3\/"},"modified":"2024-07-08T15:39:41","modified_gmt":"2024-07-08T15:39:41","slug":"ansys-fluent-rocky-dem-coupling-3","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ansys-fluent-rocky-dem-coupling-3\/","title":{"rendered":"ANSYS fluent \u2013 Rocky DEM coupling"},"content":{"rendered":"<p>Hello,<\/p>\n<p>I am running CFD-DEM simulation with two different meshes and I have some questions. I have generated volume mesh and a regular mesh . with the volume mesh Rocky gives me the attached error. But with the regular mesh simulation runs but in fluent iterations, when the simulation startes continuity goes up suddenly and also it does not converge any more. also that rise happens almost every 500 iterations but the simulation runs.<\/p>\n<p>&nbsp;<\/p>\n<p>1- Can you please let me know how can I solve the volume mesh error in Rocky ?<\/p>\n<p>2- For the regular mesh I would be grateful if you have any sugustions for improving it.<\/p>\n<p>3- Regarding the convergence , for coupling simulation does the convergence of the iterations still matters when Rocky starts ? If so can you please let me know how can I fix that?<\/p>\n<p>Thanks<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/07\/08-07-2024-1720452298-mceclip0.png\"><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/07\/08-07-2024-1720452455-mceclip1.png\"><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/07\/08-07-2024-1720452549-mceclip2.png\"><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/07\/08-07-2024-1720452789-mceclip3.png\"><\/p>\n","protected":false},"template":"","class_list":["post-370981","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hello,I am running CFD-DEM simulation with two different meshes and I have some questions. 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