{"id":161630,"date":"2023-01-25T07:16:31","date_gmt":"2023-01-25T07:16:31","guid":{"rendered":"\/knowledge\/forums\/topic\/getting-following-error-during-particle-track-error-car-invalid-argument-1-wrong-type-not-a-pair-error-object-f\/"},"modified":"2023-07-31T12:35:37","modified_gmt":"2023-07-31T12:35:37","slug":"getting-following-error-during-particle-track-error-car-invalid-argument-1-wrong-type-not-a-pair-error-object-f","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/getting-following-error-during-particle-track-error-car-invalid-argument-1-wrong-type-not-a-pair-error-object-f\/","title":{"rendered":"Getting following error during particle track.   Error: CAR: invalid argument [1]: wrong type [not a pair]  Error Object: #f"},"content":{"rendered":"<p>This error comes because no boundary zone is selected under &#8216;Release From Surface&#8217;. So injection definition is not complete. Please select &#8216;inlet&#8217; (or any other boundary zone from where particles are injected) under &#8216;Release From Surface&#8217;. Then click &#8216;Ok&#8217;. This will complete injection definition and then you can track the particles.<\/p>\n","protected":false},"template":"","class_list":["post-161630","topic","type-topic","status-publish","hentry","topic-tag-4422","topic-tag-fluent","topic-tag-fluent-post-processing","topic-tag-fluid-dynamics","topic-tag-post-processing"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_wp_page_template":["default"],"_bbp_forum_id":["27796"],"_bbp_author_ip":["23.56.168.180"],"_bbp_last_active_time":["1-24-2023  20:20:17"],"_btv_view_count":["2348"],"siebel_km_number":["2049272"],"product_version":["18"],"km_published_date":["2017-05-03T15:09:00.000Z"],"family":["Fluid Dynamics"],"application_name":["FLUENT"]},"test":"articlesansys-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/161630","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/161630\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/media?parent=161630"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}