{"id":313451,"date":"2023-10-26T08:37:36","date_gmt":"2023-10-26T08:37:36","guid":{"rendered":"\/forum\/forums\/topic\/viscosity-settings-for-non-newtonian-particles-in-dpm-models-using-expression\/"},"modified":"2023-10-26T08:51:10","modified_gmt":"2023-10-26T08:51:10","slug":"viscosity-settings-for-non-newtonian-particles-in-dpm-models-using-expression","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/viscosity-settings-for-non-newtonian-particles-in-dpm-models-using-expression\/","title":{"rendered":"Viscosity settings for non-Newtonian particles in dpm models using expression"},"content":{"rendered":"

Hi\uff0cWhen I use vof-to-dpm model, since the fluid is non-Newtonian, the viscosity of the dpm particles must also be non-Newtonian. I tried to use expression to describe it as<\/p>\n

IF(StrainRate<=0.1[s^-1],18[kg\/(m s)],(IF(0.1[s^-1]<StrainRate<=2.9664[s^-1],2.52[kg s^-1.85 m^-1]*(StrainRate^-0.85),1[kg\/(m s)])))<\/em><\/strong><\/p>\n

, and since the viscosity involves exponents, fluent suggests that there is a problem with the units<\/em><\/p>\n

<\/a><\/em><\/p>\n

Can anyone help me with this error, or  tell me how to describe it using udf\uff0cthank you very much.<\/em><\/p>\n","protected":false},"template":"","class_list":["post-313451","topic","type-topic","status-closed","hentry","topic-tag-ansys-discovery"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t