{"id":382688,"date":"2024-09-14T16:30:18","date_gmt":"2024-09-14T16:30:18","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/udf-for-mass-flux-input-as-a-function-of-heat-flux\/"},"modified":"2024-09-14T16:30:18","modified_gmt":"2024-09-14T16:30:18","slug":"udf-for-mass-flux-input-as-a-function-of-heat-flux","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/udf-for-mass-flux-input-as-a-function-of-heat-flux\/","title":{"rendered":"UDF for mass flux input as a function of heat flux"},"content":{"rendered":"<p>&lt;p&gt;Below is the UDF i am using. I am getting same heat flux at al the faces&nbsp; but which is not the case. Pls help in this regard&lt;\/p&gt;&lt;p&gt;#include &#8220;udf.h&#8221;&lt;\/p&gt;&lt;p&gt;DEFINE_PROFILE(mass_flux_AP, t, i)&lt;br&gt;{&lt;br&gt;&nbsp; &nbsp; face_t f;&lt;br&gt;&nbsp; &nbsp; real NV_VEC(farea);&lt;br&gt;&nbsp; &nbsp; real mflux_ap;&lt;br&gt;&nbsp; &nbsp; real area_ap;&lt;br&gt;&nbsp; &nbsp; real heat_ap;&lt;br&gt;&nbsp; &nbsp; real heat_flux_ap;&lt;\/p&gt;&lt;p&gt;&nbsp; &nbsp; begin_f_loop(f, t)&lt;br&gt;&nbsp; &nbsp; {&lt;br&gt;&nbsp; &nbsp; &nbsp; &nbsp; F_AREA(farea, f, t); &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;br&gt;&nbsp; &nbsp; &nbsp; &nbsp; area_ap = NV_MAG(farea); &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;br&gt;&nbsp; &nbsp; &nbsp; &nbsp; heat_ap = BOUNDARY_HEAT_FLUX(f, t); &nbsp;&nbsp;&lt;br&gt;&nbsp; &nbsp; &nbsp; &nbsp; heat_flux_ap= fabs(heat_ap \/area_ap);&lt;br&gt;&nbsp; &nbsp; &nbsp; &nbsp; Message(&#8221; heat_flux_ap= &nbsp;%g \\n&#8221;, heat_flux_ap);&lt;\/p&gt;&lt;p&gt;&nbsp; &nbsp; &nbsp; if ( heat_flux_ap &gt;= 12100000) &nbsp;&lt;br&gt;&nbsp; &nbsp; &nbsp; {&lt;br&gt;&nbsp; &nbsp; &nbsp; &nbsp; mflux_ap = (heat_flux_ap * 0.0000004082) + 0.4538;&lt;br&gt;&nbsp; &nbsp; &nbsp; &nbsp;}&lt;br&gt;&nbsp; &nbsp; &nbsp;else&nbsp;&lt;br&gt;&nbsp; &nbsp; &nbsp; &nbsp;{&lt;br&gt;&nbsp; &nbsp; &nbsp; &nbsp; mflux_ap = 5.39302;&lt;br&gt;&nbsp; &nbsp; &nbsp; &nbsp;}&lt;br&gt;&nbsp; &nbsp; &nbsp; &nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp; &nbsp; &nbsp; &nbsp; F_PROFILE(f, t, i) = mflux_ap; &nbsp; &nbsp; &nbsp; &nbsp;&lt;br&gt;&nbsp; &nbsp; }&lt;br&gt;&nbsp; &nbsp; end_f_loop(f, t)&lt;br&gt;}&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-382688","topic","type-topic","status-publish","hentry","topic-tag-fluent-ansys-1","topic-tag-udf"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Below is the UDF i am using. I am getting same heat flux at al the faces but which is not the case. Pls help in this regard#include &quot;udf.h&quot;DEFINE_PROFILE(mass_flux_AP, t, i){ face_t f; real NV_VEC(farea); real mflux_ap; real area_ap; real heat_ap; real heat_flux_ap; begin_f_loop(f, t) {\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/udf-for-mass-flux-input-as-a-function-of-heat-flux\/\" \/>\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 for mass flux input as a function of heat flux | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Below is the UDF i am using. I am getting same heat flux at al the faces but which is not the case. Pls help in this regard#include &quot;udf.h&quot;DEFINE_PROFILE(mass_flux_AP, t, i){ face_t f; real NV_VEC(farea); real mflux_ap; real area_ap; real heat_ap; real heat_flux_ap; begin_f_loop(f, t) {\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/udf-for-mass-flux-input-as-a-function-of-heat-flux\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-09-14T16:30:18+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-09-14T16:30:18+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"UDF for mass flux input as a function of heat flux | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Below is the UDF i am using. I am getting same heat flux at al the faces but which is not the case. Pls help in this regard#include &quot;udf.h&quot;DEFINE_PROFILE(mass_flux_AP, t, i){ face_t f; real NV_VEC(farea); real mflux_ap; real area_ap; real heat_ap; real heat_flux_ap; begin_f_loop(f, t) {\" \/>\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-for-mass-flux-input-as-a-function-of-heat-flux\\\/#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\\\/udf\\\/#listItem\",\"name\":\"udf\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/udf\\\/#listItem\",\"position\":3,\"name\":\"udf\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/udf\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/udf-for-mass-flux-input-as-a-function-of-heat-flux\\\/#listItem\",\"name\":\"UDF for mass flux input as a function of heat flux\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/udf-for-mass-flux-input-as-a-function-of-heat-flux\\\/#listItem\",\"position\":4,\"name\":\"UDF for mass flux input as a function of heat flux\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/udf\\\/#listItem\",\"name\":\"udf\"}}]},{\"@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-for-mass-flux-input-as-a-function-of-heat-flux\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/udf-for-mass-flux-input-as-a-function-of-heat-flux\\\/\",\"name\":\"UDF for mass flux input as a function of heat flux | Ansys Learning Forum\",\"description\":\"Below is the UDF i am using. I am getting same heat flux at al the faces but which is not the case. 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I am getting same heat flux at al the faces but which is not the case. Pls help in this regard#include \"udf.h\"DEFINE_PROFILE(mass_flux_AP, t, i){ face_t f; real NV_VEC(farea); real mflux_ap; real area_ap; real heat_ap; real heat_flux_ap; begin_f_loop(f, t) {","canonical_url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/udf-for-mass-flux-input-as-a-function-of-heat-flux\/","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-for-mass-flux-input-as-a-function-of-heat-flux\/#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\/udf\/#listItem","name":"udf"},"previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","name":"Home"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/udf\/#listItem","position":3,"name":"udf","item":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/udf\/","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/udf-for-mass-flux-input-as-a-function-of-heat-flux\/#listItem","name":"UDF for mass flux input as a function of heat flux"},"previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/topics\/#listItem","name":"Topics"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/udf-for-mass-flux-input-as-a-function-of-heat-flux\/#listItem","position":4,"name":"UDF for mass flux input as a function of heat flux","previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/udf\/#listItem","name":"udf"}}]},{"@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-for-mass-flux-input-as-a-function-of-heat-flux\/#webpage","url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/udf-for-mass-flux-input-as-a-function-of-heat-flux\/","name":"UDF for mass flux input as a function of heat flux | Ansys Learning Forum","description":"Below is the UDF i am using. I am getting same heat flux at al the faces but which is not the case. Pls help in this regard#include \"udf.h\"DEFINE_PROFILE(mass_flux_AP, t, i){ face_t f; real NV_VEC(farea); real mflux_ap; real area_ap; real heat_ap; real heat_flux_ap; begin_f_loop(f, t) {","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#website"},"breadcrumb":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/udf-for-mass-flux-input-as-a-function-of-heat-flux\/#breadcrumblist"},"datePublished":"2024-09-14T16:30:18+00:00","dateModified":"2024-09-14T16:30:18+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 for mass flux input as a function of heat flux | Ansys Learning Forum","og:description":"Below is the UDF i am using. I am getting same heat flux at al the faces but which is not the case. Pls help in this regard#include &quot;udf.h&quot;DEFINE_PROFILE(mass_flux_AP, t, i){ face_t f; real NV_VEC(farea); real mflux_ap; real area_ap; real heat_ap; real heat_flux_ap; begin_f_loop(f, t) {","og:url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/udf-for-mass-flux-input-as-a-function-of-heat-flux\/","article:published_time":"2024-09-14T16:30:18+00:00","article:modified_time":"2024-09-14T16:30:18+00:00","twitter:card":"summary_large_image","twitter:title":"UDF for mass flux input as a function of heat flux | Ansys Learning Forum","twitter:description":"Below is the UDF i am using. I am getting same heat flux at al the faces but which is not the case. 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