{"id":395554,"date":"2024-11-27T13:09:13","date_gmt":"2024-11-27T13:09:13","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/target-field-data-for-turbulence-model-optimization\/"},"modified":"2024-11-27T13:09:13","modified_gmt":"2024-11-27T13:09:13","slug":"target-field-data-for-turbulence-model-optimization","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/target-field-data-for-turbulence-model-optimization\/","title":{"rendered":"Target Field Data for Turbulence Model Optimization"},"content":{"rendered":"<p>&lt;p&gt;Hello everyone,&lt;\/p&gt;&lt;p&gt;I would like to perform a turbulence model optimization in Fluent 2024R1. Therefore I have high-fidelty results from a LES, which I would like to use as target field data. According to the manual (47.2.2.5. Defining Observables for Turbulence Model Optimization), I can write and read target field data with the following text commands:&lt;\/p&gt;<\/p>\n<ul>\n<li>\/adjoint\/utilities\/interpolate\/write-data<\/li>\n<li>\/adjoint\/utilities\/interpolate\/read-data<\/li>\n<\/ul>\n<p>&lt;p&gt;Unfortunately, there seem to some problems when writing and\/or reading the data. To show this behavior, I am presenting the workflow with the data of a channel flow with main flow in z-direction.&lt;\/p&gt;&lt;h2&gt;Writing Target Field Data:&lt;\/h2&gt;&lt;p&gt;When I export the target field data, like the velocity in x-direction, with the &#8220;write-data&#8221; command, I get the following output:&lt;\/p&gt;<\/p>\n<pre>\/\/adjoint\/utilities\/interpolate&gt; &lt;span style=\"color: #236fa1;\"&gt;write-data&lt;\/span&gt;&lt;br&gt;Export field of&gt; &lt;span style=\"color: #236fa1;\"&gt;z-velocity&lt;\/span&gt;&lt;br&gt;Interpolation file name [] &lt;span style=\"color: #236fa1;\"&gt;vel-z&lt;\/span&gt;&lt;br&gt;Writing data to vel-z.ip ...&lt;br&gt;    x-coord&lt;br&gt;    y-coord&lt;br&gt;    z-coord&lt;br&gt;    pressure&lt;br&gt;Done.<\/pre>\n<p>&lt;p style=&#8221;-qt-block-indent: 0; text-indent: 0px; margin: 0px;&#8221;&gt;&nbsp;&lt;\/p&gt;&lt;p style=&#8221;-qt-block-indent: 0; text-indent: 0px; margin: 0px;&#8221;&gt;At this point, the behavior already irritates me as the output says, that the &#8220;pressure&#8221; is exported, although i chose &#8220;z-velocity&#8221;.&lt;\/p&gt;&lt;h2&gt;Reading Target Field Data:&lt;\/h2&gt;&lt;p&gt;In the next step, I would like to read the exported data back into same case into the user-defined memory (UDM). In this example, the target is UDM 0. Like before, according to the output, the interpolation data &#8220;pressure&#8221; is imported, although this should be &#8220;z-velocity&#8221;.&lt;\/p&gt;<\/p>\n<pre>\/\/adjoint\/utilities\/interpolate&gt; &lt;span style=\"color: #236fa1;\"&gt;read-data&lt;\/span&gt;&lt;br&gt;User define memory id [] &lt;span style=\"color: #236fa1;\"&gt;0&lt;\/span&gt;&lt;br&gt;Interpolation file name [] &lt;span style=\"color: #236fa1;\"&gt;vel-z.ip&lt;\/span&gt;&lt;br&gt;Reading vel-z.ip...&lt;br&gt;Reading IP data ...&lt;br&gt;&nbsp; &nbsp; x-coord&lt;br&gt;&nbsp; &nbsp; y-coord&lt;br&gt;&nbsp; &nbsp; z-coord&lt;br&gt;&nbsp; &nbsp; pressure&lt;br&gt;&nbsp; Done.&lt;br&gt;&nbsp; Initializing values...&lt;br&gt;  Done.&lt;br&gt;&lt;br&gt;<\/pre>\n<p>&lt;h2 style=&#8221;-qt-block-indent: 0; text-indent: 0px; margin: 0px;&#8221;&gt;Data Comparison&lt;\/h2&gt;&lt;p style=&#8221;-qt-block-indent: 0; text-indent: 0px; margin: 0px;&#8221;&gt;When I compare the results of a contour plot of the z-velocity and the contant of UDM 0, I notice that both datasets, have a similar &#8220;shape&#8221;, but the values are diffently scaled. The original data ranges from 7.2 to 20.4 m\/s, whereas the UDM 0 values range from -0.003 to 13.2 m\/s. So the exported data is neither the pressure field, as I might expected, nor the actual z-velocity field.&lt;br&gt;&lt;br&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/27-11-2024-1732711109-z-velocity.png\" alt=\"Countour plot of z-velocity\" width=\"514\" height=\"199\" \/><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/27-11-2024-1732711161-udm-0.png\" alt=\"Contour plot of UDM 0\" width=\"502\" height=\"194\" \/>&lt;br&gt;When I create an adjoint observable (target-volume-integral) with z-velocity and UDM0, the value does not evaluate to 0, although both fields should be equal. When I repeat the workflow but export\/import the Static Pressure (field name: pressure) instead, everything seems wo work properly. I also tried this on another computer with Fluent 2024R2 and the same error occurs.&lt;br&gt;&lt;br&gt;Could you please tell me if I am doing something wrong with this workflow or if that is bug in Fluent? And is there a workaround I could use instead?&lt;\/p&gt;&lt;p style=&#8221;-qt-block-indent: 0; text-indent: 0px; margin: 0px;&#8221;&gt;&nbsp;&lt;\/p&gt;&lt;p style=&#8221;-qt-block-indent: 0; text-indent: 0px; margin: 0px;&#8221;&gt;Kind regards,&lt;\/p&gt;&lt;p style=&#8221;-qt-block-indent: 0; text-indent: 0px; margin: 0px;&#8221;&gt;Andreas&lt;\/p&gt;&lt;p style=&#8221;-qt-block-indent: 0; text-indent: 0px; margin: 0px;&#8221;&gt;&nbsp;&lt;\/p&gt;&lt;p style=&#8221;-qt-block-indent: 0; text-indent: 0px; margin: 0px;&#8221;&gt;&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-395554","topic","type-topic","status-publish","hentry","topic-tag-adjoint-solver","topic-tag-fluent","topic-tag-interpolation","topic-tag-turbulence-models-1"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hello everyone,I would like to perform a turbulence model optimization in Fluent 2024R1. Therefore I have high-fidelty results from a LES, which I would like to use as target field data. According to the manual (47.2.2.5. Defining Observables for Turbulence Model Optimization), I can write and read target field data with the following text commands:\/adjoint\/utilities\/interpolate\/write-data\/adjoint\/utilities\/interpolate\/read-dataUnfortunately,\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/target-field-data-for-turbulence-model-optimization\/\" \/>\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=\"Target Field Data for Turbulence Model Optimization | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Hello everyone,I would like to perform a turbulence model optimization in Fluent 2024R1. Therefore I have high-fidelty results from a LES, which I would like to use as target field data. According to the manual (47.2.2.5. Defining Observables for Turbulence Model Optimization), I can write and read target field data with the following text commands:\/adjoint\/utilities\/interpolate\/write-data\/adjoint\/utilities\/interpolate\/read-dataUnfortunately,\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/target-field-data-for-turbulence-model-optimization\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-11-27T13:09:13+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-11-27T13:09:13+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Target Field Data for Turbulence Model Optimization | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Hello everyone,I would like to perform a turbulence model optimization in Fluent 2024R1. Therefore I have high-fidelty results from a LES, which I would like to use as target field data. According to the manual (47.2.2.5. Defining Observables for Turbulence Model Optimization), I can write and read target field data with the following text commands:\/adjoint\/utilities\/interpolate\/write-data\/adjoint\/utilities\/interpolate\/read-dataUnfortunately,\" \/>\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\\\/target-field-data-for-turbulence-model-optimization\\\/#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\\\/#listItem\",\"name\":\"fluent\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/fluent\\\/#listItem\",\"position\":3,\"name\":\"fluent\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/fluent\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/target-field-data-for-turbulence-model-optimization\\\/#listItem\",\"name\":\"Target Field Data for Turbulence Model Optimization\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/target-field-data-for-turbulence-model-optimization\\\/#listItem\",\"position\":4,\"name\":\"Target Field Data for Turbulence Model Optimization\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/fluent\\\/#listItem\",\"name\":\"fluent\"}}]},{\"@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\\\/target-field-data-for-turbulence-model-optimization\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/target-field-data-for-turbulence-model-optimization\\\/\",\"name\":\"Target Field Data for Turbulence Model Optimization | Ansys Learning Forum\",\"description\":\"Hello everyone,I would like to perform a turbulence model optimization in Fluent 2024R1. 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Therefore I have high-fidelty results from a LES, which I would like to use as target field data. According to the manual (47.2.2.5. Defining Observables for Turbulence Model Optimization), I can write and read target field data with the following text commands:\/adjoint\/utilities\/interpolate\/write-data\/adjoint\/utilities\/interpolate\/read-dataUnfortunately,","canonical_url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/target-field-data-for-turbulence-model-optimization\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/target-field-data-for-turbulence-model-optimization\/#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\/#listItem","name":"fluent"},"previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","name":"Home"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/fluent\/#listItem","position":3,"name":"fluent","item":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/fluent\/","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/target-field-data-for-turbulence-model-optimization\/#listItem","name":"Target Field Data for Turbulence Model Optimization"},"previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/topics\/#listItem","name":"Topics"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/target-field-data-for-turbulence-model-optimization\/#listItem","position":4,"name":"Target Field Data for Turbulence Model Optimization","previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/fluent\/#listItem","name":"fluent"}}]},{"@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\/target-field-data-for-turbulence-model-optimization\/#webpage","url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/target-field-data-for-turbulence-model-optimization\/","name":"Target Field Data for Turbulence Model Optimization | Ansys Learning Forum","description":"Hello everyone,I would like to perform a turbulence model optimization in Fluent 2024R1. 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Therefore I have high-fidelty results from a LES, which I would like to use as target field data. According to the manual (47.2.2.5. Defining Observables for Turbulence Model Optimization), I can write and read target field data with the following text commands:\/adjoint\/utilities\/interpolate\/write-data\/adjoint\/utilities\/interpolate\/read-dataUnfortunately,","og:url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/target-field-data-for-turbulence-model-optimization\/","article:published_time":"2024-11-27T13:09:13+00:00","article:modified_time":"2024-11-27T13:09:13+00:00","twitter:card":"summary_large_image","twitter:title":"Target Field Data for Turbulence Model Optimization | Ansys Learning Forum","twitter:description":"Hello everyone,I would like to perform a turbulence model optimization in Fluent 2024R1. Therefore I have high-fidelty results from a LES, which I would like to use as target field data. According to the manual (47.2.2.5. 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