{"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":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"This error comes because no boundary zone is selected under &#039;Release From Surface&#039;. So injection definition is not complete. Please select &#039;inlet&#039; (or any other boundary zone from where particles are injected) under &#039;Release From Surface&#039;. Then click &#039;Ok&#039;. This will complete injection definition and then you can track the particles.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"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\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Ansys Knowledge | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Getting following error during particle track. Error: CAR: invalid argument [1]: wrong type [not a pair] Error Object: #f | Ansys Knowledge\" \/>\n\t\t<meta property=\"og:description\" content=\"This error comes because no boundary zone is selected under &#039;Release From Surface&#039;. So injection definition is not complete. Please select &#039;inlet&#039; (or any other boundary zone from where particles are injected) under &#039;Release From Surface&#039;. Then click &#039;Ok&#039;. This will complete injection definition and then you can track the particles.\" \/>\n\t\t<meta property=\"og:url\" content=\"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\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2023-01-25T07:16:31+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2023-07-31T12:35:37+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Getting following error during particle track. Error: CAR: invalid argument [1]: wrong type [not a pair] Error Object: #f | Ansys Knowledge\" \/>\n\t\t<meta name=\"twitter:description\" content=\"This error comes because no boundary zone is selected under &#039;Release From Surface&#039;. So injection definition is not complete. Please select &#039;inlet&#039; (or any other boundary zone from where particles are injected) under &#039;Release From Surface&#039;. Then click &#039;Ok&#039;. This will complete injection definition and then you can track the particles.\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"BreadcrumbList\",\"@id\":\"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\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/#listItem\",\"position\":2,\"name\":\"Topics\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/fluent\\\/#listItem\",\"name\":\"fluent\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/fluent\\\/#listItem\",\"position\":3,\"name\":\"fluent\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/fluent\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"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\\\/#listItem\",\"name\":\"Getting following error during particle track.   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Error: CAR: invalid argument [1]: wrong type [not a pair] Error Object: #f | Ansys Knowledge","twitter:description":"This error comes because no boundary zone is selected under 'Release From Surface'. So injection definition is not complete. Please select 'inlet' (or any other boundary zone from where particles are injected) under 'Release From Surface'. Then click 'Ok'. 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