{"id":394880,"date":"2024-11-22T02:53:26","date_gmt":"2024-11-22T02:53:26","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/udf-error-5\/"},"modified":"2024-11-22T02:53:26","modified_gmt":"2024-11-22T02:53:26","slug":"udf-error-5","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/udf-error-5\/","title":{"rendered":"UDF Error"},"content":{"rendered":"<p>&lt;p&gt;I wrote the following UDF for heteregeneous reactions in a case for multiphase flow.&nbsp;&lt;\/p&gt;&lt;div&gt;#include &#8220;udf.h&#8221;&lt;\/div&gt;&lt;div&gt;&nbsp;&lt;\/div&gt;&lt;div&gt;\/* Define constants *\/&lt;\/div&gt;&lt;div&gt;#define R 1.987&lt;\/div&gt;&lt;div&gt;\/* Universal gas constant in cal\/(mol*K) *\/&lt;\/div&gt;&lt;div&gt;#define Pre 1&lt;\/div&gt;&lt;div&gt;\/* Pre-exponential factor in m^3\/(mol*s) *\/&lt;\/div&gt;&lt;div&gt;#define EA 5000&lt;\/div&gt;&lt;div&gt;\/* Activation energy in cal\/mol *\/&lt;\/div&gt;&lt;div&gt;&nbsp;&lt;\/div&gt;&lt;div&gt;\/* Define phase indices *\/&lt;\/div&gt;&lt;div&gt;#define liquid_index 3&lt;\/div&gt;&lt;div&gt;\/* Index for liquid phase *\/&lt;\/div&gt;&lt;div&gt;#define gas_index 2&lt;\/div&gt;&lt;div&gt;\/* Index for gas phase B *\/&lt;\/div&gt;&lt;div&gt;&nbsp;&lt;\/div&gt;&lt;div&gt;\/* Heterogeneous reaction rate definition *\/&lt;\/div&gt;&lt;div&gt;DEFINE_HET_RXN_RATE(sj_reaction_rate, c, t, r, mw, yi, rr, rr_t)&lt;\/div&gt;&lt;div&gt;{&lt;\/div&gt;&lt;div&gt;&nbsp; &nbsp; \/* Get the temperature of the liquid phase *\/&lt;\/div&gt;&lt;div&gt;&nbsp; &nbsp; real T_liquid = C_T(c, t); \/* Temperature in K *\/&lt;\/div&gt;&lt;div&gt;&nbsp;&lt;\/div&gt;&lt;div&gt;&nbsp; &nbsp; \/*Calculate the concentration of A in the liquid phase *\/&lt;\/div&gt;&lt;div&gt;&nbsp; &nbsp; real A_conc = C_YI(c, t, liquid_index);&lt;\/div&gt;&lt;div&gt;&nbsp;&lt;\/div&gt;&lt;div&gt;&nbsp; &nbsp; \/* Calculate the reaction rate *\/&lt;\/div&gt;&lt;div&gt;&nbsp; &nbsp; *rr = Pre * exp(-EA \/ (R * T_liquid)) * A_conc;&lt;\/div&gt;&lt;div&gt;&nbsp;&lt;\/div&gt;&lt;div&gt;&nbsp; &nbsp; \/* Optional: Store additional information if needed *\/&lt;\/div&gt;&lt;div&gt;&nbsp; &nbsp; C_UDMI(c, t, 0) = Pre; \/* Store pre-exponential factor *\/&lt;\/div&gt;&lt;div&gt;&nbsp; &nbsp; C_UDMI(c, t, 1) = EA; \/* Store activation energy *\/&lt;\/div&gt;&lt;div&gt;&nbsp; &nbsp; C_UDMI(c, t, 2) = R; \/* Store gas constant *\/&lt;\/div&gt;&lt;div&gt;&nbsp; &nbsp; C_UDMI(c, t, 3) = T_liquid; \/* Store temperature *\/&lt;\/div&gt;&lt;div&gt;}&lt;\/div&gt;&lt;div&gt;&nbsp;&lt;\/div&gt;&lt;div&gt;&lt;div&gt;&lt;p class=&#8221;x_xmsonormal&#8221;&gt;&lt;span data-ogsc=&#8221;black&#8221; data-olk-copy-source=&#8221;MessageBody&#8221;&gt;I am getting the following&nbsp; warning upon compiling my UDF with the built-in compiler.&lt;\/span&gt;&lt;\/p&gt;&lt;\/div&gt;&lt;div&gt;&lt;p class=&#8221;x_xmsonormal&#8221;&gt;&lt;span data-ogsc=&#8221;black&#8221;&gt;&nbsp;&lt;\/span&gt;&lt;span data-ogsc=&#8221;rgb(12, 100, 192)&#8221;&gt;scons: warning: No version of Visual Studio compiler found &#8211; C\/C++ compilers most likely not set correctly&lt;\/span&gt;&lt;\/p&gt;&lt;\/div&gt;&lt;div&gt;&lt;p class=&#8221;x_xmsonormal&#8221;&gt;&lt;span data-ogsc=&#8221;rgb(12, 100, 192)&#8221;&gt;File &#8220;C:\\Users\\&#8230;.\\libudf\\win64\\3ddp_host\\SConstruct&#8221;, line 20, in &lt;module&gt;&lt;\/span&gt;&lt;\/p&gt;&lt;\/div&gt;&lt;div&gt;&lt;p class=&#8221;x_xmsonormal&#8221;&gt;&lt;span data-ogsc=&#8221;rgb(12, 100, 192)&#8221;&gt;Compiler path: &#8220;C:\\PROGRA~1\\ANSYSI~1\\v241\\fluent&#8221;\\ntbin\\clang\\bin\\clang-cl&lt;\/span&gt;&lt;\/p&gt;&lt;\/div&gt;&lt;div&gt;&lt;p class=&#8221;x_xmsonormal&#8221;&gt;&lt;span data-ogsc=&#8221;rgb(12, 100, 192)&#8221;&gt;Linker &nbsp; path: &#8220;C:\\PROGRA~1\\ANSYSI~1\\v241\\fluent&#8221;\\ntbin\\clang\\bin\\lld-link&lt;\/span&gt;&lt;\/p&gt;&lt;\/div&gt;&lt;div&gt;&lt;p class=&#8221;x_xmsonormal&#8221;&gt;&lt;span data-ogsc=&#8221;black&#8221;&gt;&nbsp;&lt;\/span&gt;&lt;\/p&gt;&lt;\/div&gt;&lt;div&gt;&lt;p class=&#8221;x_xmsonormal&#8221;&gt;&lt;span data-ogsc=&#8221;black&#8221;&gt;After compiling, I click load and then initialize and run the simulation. Then I get a fatal error:&lt;\/span&gt;&lt;\/p&gt;&lt;\/div&gt;&lt;div&gt;&lt;p class=&#8221;x_xmsonormal&#8221;&gt;&lt;span data-ogsc=&#8221;black&#8221;&gt;&nbsp;&lt;\/span&gt;&lt;span data-ogsc=&#8221;rgb(12, 100, 192)&#8221;&gt;==============================================================================&lt;\/span&gt;&lt;\/p&gt;&lt;\/div&gt;&lt;div&gt;&lt;p class=&#8221;x_xmsonormal&#8221;&gt;&lt;span data-ogsc=&#8221;rgb(12, 100, 192)&#8221;&gt;==============================================================================&lt;\/span&gt;&lt;\/p&gt;&lt;\/div&gt;&lt;div&gt;&lt;p class=&#8221;x_xmsonormal&#8221;&gt;&lt;span data-ogsc=&#8221;rgb(12, 100, 192)&#8221;&gt;&nbsp;&lt;\/span&gt;&lt;span data-ogsc=&#8221;rgb(12, 100, 192)&#8221;&gt;Node 1: Process 6996: Received signal SIGSEGV.&lt;\/span&gt;&lt;\/p&gt;&lt;\/div&gt;&lt;div&gt;&lt;p class=&#8221;x_xmsonormal&#8221;&gt;&lt;span data-ogsc=&#8221;rgb(12, 100, 192)&#8221;&gt;&nbsp;&lt;\/span&gt;&lt;span data-ogsc=&#8221;rgb(12, 100, 192)&#8221;&gt;==============================================================================&lt;\/span&gt;&lt;\/p&gt;&lt;\/div&gt;&lt;div&gt;&lt;p class=&#8221;x_xmsonormal&#8221;&gt;&lt;span data-ogsc=&#8221;rgb(12, 100, 192)&#8221;&gt;==============================================================================&lt;\/span&gt;&lt;\/p&gt;&lt;\/div&gt;&lt;div&gt;&lt;p class=&#8221;x_xmsonormal&#8221;&gt;&lt;span data-ogsc=&#8221;rgb(12, 100, 192)&#8221;&gt;&nbsp;&lt;\/span&gt;&lt;span data-ogsc=&#8221;rgb(12, 100, 192)&#8221;&gt;Node 2: Process 27464: Received signal SIGSEGV.&lt;\/span&gt;&lt;\/p&gt;&lt;\/div&gt;&lt;div&gt;&lt;p class=&#8221;x_xmsonormal&#8221;&gt;&lt;span data-ogsc=&#8221;rgb(12, 100, 192)&#8221;&gt;&nbsp;&lt;\/span&gt;&lt;span data-ogsc=&#8221;rgb(12, 100, 192)&#8221;&gt;==============================================================================&lt;\/span&gt;&lt;\/p&gt;&lt;\/div&gt;&lt;div&gt;&lt;p class=&#8221;x_xmsonormal&#8221;&gt;&lt;span data-ogsc=&#8221;rgb(12, 100, 192)&#8221;&gt;&nbsp;&lt;\/span&gt;&lt;span data-ogsc=&#8221;rgb(12, 100, 192)&#8221;&gt;Node 0: Process 26448: Received signal SIGSEGV.&lt;\/span&gt;&lt;\/p&gt;&lt;\/div&gt;&lt;div&gt;&lt;p class=&#8221;x_xmsonormal&#8221;&gt;&lt;span data-ogsc=&#8221;rgb(12, 100, 192)&#8221;&gt;&nbsp;&lt;\/span&gt;&lt;span data-ogsc=&#8221;rgb(12, 100, 192)&#8221;&gt;==============================================================================&lt;\/span&gt;&lt;\/p&gt;&lt;\/div&gt;&lt;div&gt;&lt;p class=&#8221;x_xmsonormal&#8221;&gt;&lt;span data-ogsc=&#8221;rgb(12, 100, 192)&#8221;&gt;==============================================================================&lt;\/span&gt;&lt;\/p&gt;&lt;\/div&gt;&lt;div&gt;&lt;p class=&#8221;x_xmsonormal&#8221;&gt;&lt;span data-ogsc=&#8221;rgb(12, 100, 192)&#8221;&gt;&nbsp;&lt;\/span&gt;&lt;span data-ogsc=&#8221;rgb(12, 100, 192)&#8221;&gt;Node 3: Process 10824: Received signal SIGSEGV.&lt;\/span&gt;&lt;\/p&gt;&lt;\/div&gt;&lt;div&gt;&lt;p class=&#8221;x_xmsonormal&#8221;&gt;&lt;span data-ogsc=&#8221;rgb(12, 100, 192)&#8221;&gt;&nbsp;&lt;\/span&gt;&lt;span data-ogsc=&#8221;rgb(12, 100, 192)&#8221;&gt;==============================================================================&lt;\/span&gt;&lt;\/p&gt;&lt;\/div&gt;&lt;div&gt;&lt;p class=&#8221;x_xmsonormal&#8221;&gt;&lt;span data-ogsc=&#8221;rgb(12, 100, 192)&#8221;&gt;&nbsp;Error in the fluent (fl) process : ended abnormally&lt;\/span&gt;&lt;\/p&gt;&lt;\/div&gt;&lt;div&gt;&lt;p class=&#8221;x_xmsonormal&#8221;&gt;&lt;span data-ogsc=&#8221;black&#8221;&gt;&nbsp;&lt;\/span&gt;&lt;\/p&gt;&lt;\/div&gt;&lt;div&gt;&lt;p class=&#8221;x_xmsonormal&#8221;&gt;&lt;span data-ogsc=&#8221;black&#8221;&gt;Other than checking the box for Setup Compilation Environment for UDF in Fluent Launcher, do I need to anything else?&lt;\/span&gt;&lt;\/p&gt;&lt;\/div&gt;&lt;\/div&gt;&lt;div&gt;&nbsp;&lt;\/div&gt;&lt;div&gt;&nbsp;&lt;\/div&gt;<\/p>\n","protected":false},"template":"","class_list":["post-394880","topic","type-topic","status-publish","hentry","topic-tag-fluent-udf-multi-phase"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"I wrote the following UDF for heteregeneous reactions in a case for multiphase flow. #include &quot;udf.h&quot; \/* Define constants *\/#define R 1.987\/* Universal gas constant in cal\/(mol*K) *\/#define Pre 1\/* Pre-exponential factor in m^3\/(mol*s) *\/#define EA 5000\/* Activation energy in cal\/mol *\/ \/* Define phase indices *\/#define liquid_index 3\/* Index for liquid phase *\/#define gas_index 2\/* Index for\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/udf-error-5\/\" \/>\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 Learning Forum | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"UDF Error | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"I wrote the following UDF for heteregeneous reactions in a case for multiphase flow. #include &quot;udf.h&quot; \/* Define constants *\/#define R 1.987\/* Universal gas constant in cal\/(mol*K) *\/#define Pre 1\/* Pre-exponential factor in m^3\/(mol*s) *\/#define EA 5000\/* Activation energy in cal\/mol *\/ \/* Define phase indices *\/#define liquid_index 3\/* Index for liquid phase *\/#define gas_index 2\/* Index for\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/udf-error-5\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-11-22T02:53:26+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-11-22T02:53:26+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"UDF Error | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"I wrote the following UDF for heteregeneous reactions in a case for multiphase flow. #include &quot;udf.h&quot; \/* Define constants *\/#define R 1.987\/* Universal gas constant in cal\/(mol*K) *\/#define Pre 1\/* Pre-exponential factor in m^3\/(mol*s) *\/#define EA 5000\/* Activation energy in cal\/mol *\/ \/* Define phase indices *\/#define liquid_index 3\/* Index for liquid phase *\/#define gas_index 2\/* Index for\" \/>\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\\\/forum\\\/forums\\\/topic\\\/udf-error-5\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"position\":2,\"name\":\"Topics\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/fluent-udf-multi-phase\\\/#listItem\",\"name\":\"fluent-udf-multi-phase\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/fluent-udf-multi-phase\\\/#listItem\",\"position\":3,\"name\":\"fluent-udf-multi-phase\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/fluent-udf-multi-phase\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/udf-error-5\\\/#listItem\",\"name\":\"UDF Error\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/udf-error-5\\\/#listItem\",\"position\":4,\"name\":\"UDF Error\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/fluent-udf-multi-phase\\\/#listItem\",\"name\":\"fluent-udf-multi-phase\"}}]},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#organization\",\"name\":\"Ansys Learning Forum\",\"description\":\"Ansys Innovation Space\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/udf-error-5\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/udf-error-5\\\/\",\"name\":\"UDF Error | Ansys Learning Forum\",\"description\":\"I wrote the following UDF for heteregeneous reactions in a case for multiphase flow. #include \\\"udf.h\\\" \\\/* Define constants *\\\/#define R 1.987\\\/* Universal gas constant in cal\\\/(mol*K) *\\\/#define Pre 1\\\/* Pre-exponential factor in m^3\\\/(mol*s) *\\\/#define EA 5000\\\/* Activation energy in cal\\\/mol *\\\/ \\\/* Define phase indices *\\\/#define liquid_index 3\\\/* Index for liquid phase *\\\/#define gas_index 2\\\/* Index for\",\"inLanguage\":\"en-US\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/udf-error-5\\\/#breadcrumblist\"},\"datePublished\":\"2024-11-22T02:53:26+00:00\",\"dateModified\":\"2024-11-22T02:53:26+00:00\"},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#website\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/\",\"name\":\"Ansys Learning Forum\",\"description\":\"Ansys Innovation Space\",\"inLanguage\":\"en-US\",\"publisher\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#organization\"}}]}\n\t\t<\/script>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"UDF Error | Ansys Learning Forum","description":"I wrote the following UDF for heteregeneous reactions in a case for multiphase flow. #include \"udf.h\" \/* Define constants *\/#define R 1.987\/* Universal gas constant in cal\/(mol*K) *\/#define Pre 1\/* Pre-exponential factor in m^3\/(mol*s) *\/#define EA 5000\/* Activation energy in cal\/mol *\/ \/* Define phase indices *\/#define liquid_index 3\/* Index for liquid phase *\/#define gas_index 2\/* Index for","canonical_url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/udf-error-5\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/udf-error-5\/#breadcrumblist","itemListElement":[{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","position":1,"name":"Home","item":"https:\/\/innovationspace.ansys.com\/forum","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/topics\/#listItem","name":"Topics"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/topics\/#listItem","position":2,"name":"Topics","item":"https:\/\/innovationspace.ansys.com\/forum\/topics\/","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/fluent-udf-multi-phase\/#listItem","name":"fluent-udf-multi-phase"},"previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","name":"Home"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/fluent-udf-multi-phase\/#listItem","position":3,"name":"fluent-udf-multi-phase","item":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/fluent-udf-multi-phase\/","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/udf-error-5\/#listItem","name":"UDF Error"},"previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/topics\/#listItem","name":"Topics"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/udf-error-5\/#listItem","position":4,"name":"UDF Error","previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/fluent-udf-multi-phase\/#listItem","name":"fluent-udf-multi-phase"}}]},{"@type":"Organization","@id":"https:\/\/innovationspace.ansys.com\/forum\/#organization","name":"Ansys Learning Forum","description":"Ansys Innovation Space","url":"https:\/\/innovationspace.ansys.com\/forum\/"},{"@type":"WebPage","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/udf-error-5\/#webpage","url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/udf-error-5\/","name":"UDF Error | Ansys Learning Forum","description":"I wrote the following UDF for heteregeneous reactions in a case for multiphase flow. #include \"udf.h\" \/* Define constants *\/#define R 1.987\/* Universal gas constant in cal\/(mol*K) *\/#define Pre 1\/* Pre-exponential factor in m^3\/(mol*s) *\/#define EA 5000\/* Activation energy in cal\/mol *\/ \/* Define phase indices *\/#define liquid_index 3\/* Index for liquid phase *\/#define gas_index 2\/* Index for","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#website"},"breadcrumb":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/udf-error-5\/#breadcrumblist"},"datePublished":"2024-11-22T02:53:26+00:00","dateModified":"2024-11-22T02:53:26+00:00"},{"@type":"WebSite","@id":"https:\/\/innovationspace.ansys.com\/forum\/#website","url":"https:\/\/innovationspace.ansys.com\/forum\/","name":"Ansys Learning Forum","description":"Ansys Innovation Space","inLanguage":"en-US","publisher":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#organization"}}]},"og:locale":"en_US","og:site_name":"Ansys Learning Forum | Ansys Innovation Space","og:type":"article","og:title":"UDF Error | Ansys Learning Forum","og:description":"I wrote the following UDF for heteregeneous reactions in a case for multiphase flow. #include &quot;udf.h&quot; \/* Define constants *\/#define R 1.987\/* Universal gas constant in cal\/(mol*K) *\/#define Pre 1\/* Pre-exponential factor in m^3\/(mol*s) *\/#define EA 5000\/* Activation energy in cal\/mol *\/ \/* Define phase indices *\/#define liquid_index 3\/* Index for liquid phase *\/#define gas_index 2\/* Index for","og:url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/udf-error-5\/","article:published_time":"2024-11-22T02:53:26+00:00","article:modified_time":"2024-11-22T02:53:26+00:00","twitter:card":"summary_large_image","twitter:title":"UDF Error | Ansys Learning Forum","twitter:description":"I wrote the following UDF for heteregeneous reactions in a case for multiphase flow. #include &quot;udf.h&quot; \/* Define constants *\/#define R 1.987\/* Universal gas constant in cal\/(mol*K) *\/#define Pre 1\/* Pre-exponential factor in m^3\/(mol*s) *\/#define EA 5000\/* Activation energy in cal\/mol *\/ \/* Define phase indices *\/#define liquid_index 3\/* Index for liquid phase *\/#define gas_index 2\/* Index for"},"aioseo_meta_data":{"post_id":"394880","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"limit_modified_date":false,"created":"2025-10-19 09:28:15","updated":"2025-10-19 09:28:15","ai":null,"breadcrumb_settings":null,"seo_analyzer_scan_date":null},"aioseo_breadcrumb":"<div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/forum\" title=\"Home\">Home<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/forum\/topics\/\" title=\"Topics\">Topics<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/fluent-udf-multi-phase\/\" title=\"fluent-udf-multi-phase\">fluent-udf-multi-phase<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tUDF Error\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/innovationspace.ansys.com\/forum"},{"label":"Topics","link":"https:\/\/innovationspace.ansys.com\/forum\/topics\/"},{"label":"fluent-udf-multi-phase","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/fluent-udf-multi-phase\/"},{"label":"UDF Error","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/udf-error-5\/"}],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["437146"],"_bbp_author_ip":["47.188.202.145"],"_btv_view_count":["958"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["394880"],"_bbp_forum_id":["27792"],"_bbp_engagement":["437146"],"_bbp_voice_count":["1"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["394881"],"_bbp_last_active_id":["394881"],"_bbp_last_active_time":["2024-11-22 02:55:05"]},"test":"sjohnbenchmark-space-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/394880","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\/394880\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=394880"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}