{"id":392932,"date":"2024-11-06T09:55:51","date_gmt":"2024-11-06T09:55:51","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fan-flow-simulation\/"},"modified":"2024-11-06T09:55:51","modified_gmt":"2024-11-06T09:55:51","slug":"fan-flow-simulation","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fan-flow-simulation\/","title":{"rendered":"Fan flow simulation"},"content":{"rendered":"<p>&lt;p&gt;Hi,&lt;\/p&gt;&lt;p&gt;I have a doubt about pressure results in a simulation with two fans in ansys discovery. Fans have been set with predefined fan library (manufacturer data &#8211; icepack)&lt;\/p&gt;&lt;p&gt;After running the simulation, results show negative values for pressure drop, both static and total.&lt;\/p&gt;&lt;p&gt;Thus, having a negative static pressure drop does not match with the fan curve, as the minimum value is zero. Additionally, having a negative total pressure drop has no sense for this system (as far as I undersand).&lt;br&gt;&lt;br&gt;Could you please help with this matter regarding the results I got and the proper way of evaluating fans in discovery?&lt;\/p&gt;&lt;p&gt;Add images to show the model.&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/06-11-2024-1730886795-mceclip0.png\" width=\"1408\" height=\"597\" \/>&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/06-11-2024-1730886815-mceclip1.png\" \/>&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/06-11-2024-1730886830-mceclip2.png\" \/>&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/06-11-2024-1730886838-mceclip3.png\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-392932","topic","type-topic","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hi,I have a doubt about pressure results in a simulation with two fans in ansys discovery. Fans have been set with predefined fan library (manufacturer data - icepack)After running the simulation, results show negative values for pressure drop, both static and total.Thus, having a negative static pressure drop does not match with the fan curve,\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fan-flow-simulation\/\" \/>\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=\"Fan flow simulation | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Hi,I have a doubt about pressure results in a simulation with two fans in ansys discovery. Fans have been set with predefined fan library (manufacturer data - icepack)After running the simulation, results show negative values for pressure drop, both static and total.Thus, having a negative static pressure drop does not match with the fan curve,\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fan-flow-simulation\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-11-06T09:55:51+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-11-06T09:55:51+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Fan flow simulation | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Hi,I have a doubt about pressure results in a simulation with two fans in ansys discovery. Fans have been set with predefined fan library (manufacturer data - icepack)After running the simulation, results show negative values for pressure drop, both static and total.Thus, having a negative static pressure drop does not match with the fan curve,\" \/>\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\\\/fan-flow-simulation\\\/#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\\\/fan-flow-simulation\\\/#listItem\",\"name\":\"Fan flow simulation\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/fan-flow-simulation\\\/#listItem\",\"position\":3,\"name\":\"Fan flow simulation\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}}]},{\"@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\\\/fan-flow-simulation\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/fan-flow-simulation\\\/\",\"name\":\"Fan flow simulation | Ansys Learning Forum\",\"description\":\"Hi,I have a doubt about pressure results in a simulation with two fans in ansys discovery. 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Fans have been set with predefined fan library (manufacturer data - icepack)After running the simulation, results show negative values for pressure drop, both static and total.Thus, having a negative static pressure drop does not match with the fan curve,","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#website"},"breadcrumb":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fan-flow-simulation\/#breadcrumblist"},"datePublished":"2024-11-06T09:55:51+00:00","dateModified":"2024-11-06T09:55:51+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":"Fan flow simulation | Ansys Learning Forum","og:description":"Hi,I have a doubt about pressure results in a simulation with two fans in ansys discovery. 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