{"id":364218,"date":"2024-04-25T13:31:47","date_gmt":"2024-04-25T13:31:47","guid":{"rendered":"\/forum\/forums\/topic\/udf-diffusivity-in-battery-msmd-model\/"},"modified":"2024-04-25T13:42:42","modified_gmt":"2024-04-25T13:42:42","slug":"udf-diffusivity-in-battery-msmd-model","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/udf-diffusivity-in-battery-msmd-model\/","title":{"rendered":"UDF diffusivity in Battery MSMD model"},"content":{"rendered":"<p>Hello,<\/p>\n<p>I have been trying to use the battery MSMD model (I&#8217;m using Ansys 2023R1) for my LFP 32700 cell. I have been referring to&nbsp;<a class=\"youtube-link\" href=\"https:\/\/www.youtube.com\/embed\/X5nnWAzn_cw\" target=\"_blank\" rel=\"noopener\">this<\/a> YouTube series. I have a doubt regarding the material properties. In this video, which uses an older version of Ansys, there is a separate parameter called UDS diffusivity in kg\/m-s units. However, in 2023R1, it lies under the electrical conductivity option, but in a completely different unit, S\/m.&nbsp;<\/p>\n<p>My UDS diffusivity in older version was defined-per-uds in kg\/m-s with the following values:<br \/>uds-0 : 1.19e6<br \/>uds-1 : 9.83e5<\/p>\n<p>Are these completely different things with different units? Can I put the values from previous versions in kg\/m-s, into 2023R1 in S\/m? Can someone please give me some clarity in terms of units, definitions, or conversions of the numbers (from kg\/m-s to S\/m, if any)?<\/p>\n<p>Thank you for your time.&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-364218","topic","type-topic","status-closed","hentry","topic-tag-add-material","topic-tag-battery","topic-tag-battery-cooling","topic-tag-battery-modeling","topic-tag-battery-pack-1","topic-tag-battery-simulation","topic-tag-define-diffusivity","topic-tag-fluent","topic-tag-fluent-uds","topic-tag-msmd-battery-model","topic-tag-msmd-battery-module-1","topic-tag-uds"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["342632","5976"],"_bbp_author_ip":["96.7.218.215"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_bbp_likes_count":["1"],"_btv_view_count":["796"],"_bbp_topic_status":["unanswered"],"_edit_lock":["1714052469:294138"],"_bbp_topic_id":["364218"],"_bbp_forum_id":["27792"],"_bbp_engagement":["5976","342632"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["367144"],"_bbp_last_active_id":["367144"],"_bbp_last_active_time":["2024-05-16 12:26:20"]},"test":"ed19b049smail-iitm-ac-in"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/364218","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":1,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/364218\/revisions"}],"predecessor-version":[{"id":364223,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/364218\/revisions\/364223"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=364218"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}