{"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":"<p>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<p><strong><em>IF(StrainRate&lt;=0.1[s^-1],18[kg\/(m s)],(IF(0.1[s^-1]&lt;StrainRate&lt;=2.9664[s^-1],2.52[kg s^-1.85 m^-1]*(StrainRate^-0.85),1[kg\/(m s)])))<\/em><\/strong><\/p>\n<p><em>, and since the viscosity involves exponents, fluent suggests that there is a problem with the units<\/em><\/p>\n<p><em><a class=\"wp-colorbox-image cboxElement\" href=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/10\/26-10-2023-1698309254-mceclip0.png\"><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/10\/26-10-2023-1698309254-mceclip0.png\"><\/a><\/em><\/p>\n<p><em>Can anyone help me with this error, or&nbsp; 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":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["296542","199","43304"],"_bbp_author_ip":["23.218.248.135"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["952"],"_edit_lock":["1698309854:236494"],"_bbp_likes_count":["1"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["313451"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","43304","296542"],"_bbp_voice_count":["3"],"_bbp_reply_count":["13"],"_bbp_last_reply_id":["318523"],"_bbp_last_active_id":["318523"],"_bbp_last_active_time":["2023-11-20 14:05:28"]},"test":"dhy19944gmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/313451","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/313451\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=313451"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}