{"id":46073,"date":"2020-07-13T14:47:58","date_gmt":"2020-07-13T14:47:58","guid":{"rendered":"\/forum\/forums\/topic\/fan-boundary-conditions\/"},"modified":"2020-07-13T14:47:58","modified_gmt":"2020-07-13T14:47:58","slug":"fan-boundary-conditions","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fan-boundary-conditions\/","title":{"rendered":"Fan Boundary Conditions"},"content":{"rendered":"<p>Hello everyone,<\/p>\n<p><\/p>\n<p>I have been trying to use the &#8220;Intake Fan&#8221; boundary condition to model a fan in an enclosure system. I have found a fan curve for the type of fan that I will be using for the system and used a piecewise-linear linear function to input the pressure jump and velocity relationship into the intake fan condition.<\/p>\n<p><\/p>\n<p>One thing I noticed is that there is nothing to set what rate the fan will be running at. One reason I wanted to run these simulations was to see what would happen if the fan ran at different flow rates. I started looking through different manuals and user guides and found the&nbsp;this section, seen in the attached image, which seems to be what I need to use. The problem is I can find the &#8220;Limit Polynomial Velocity Range&#8221; option anywhere.<\/p>\n<p><\/p>\n<p>I&#8217;m&nbsp;using ANSYS 2019 R3 and the manual seems to be using an older version. I&#8217;m not sure if it is because of the new version or that I just can&#8217;t find the option, but does anyone know how to use this option? Also is this the best way to achieve what I am trying to do with testing different flow rates?<\/p>\n<p><\/p>\n<p>Here is the link that of the user guide I was following:&nbsp;<a href=\"https:\/\/www.afs.enea.it\/project\/neptunius\/docs\/fluent\/html\/ug\/node254.htm\">https:\/\/www.afs.enea.it\/project\/neptunius\/docs\/fluent\/html\/ug\/node254.htm<\/a><\/p>\n<p><\/p>\n<p>Below is an image of the section that I mentioned before.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/494bbd8b-bf3d-4536-a754-abf700e9532a\/f04459ac-0aae-4811-a3f5-abf700f2d192_velocity-range-info.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n","protected":false},"template":"","class_list":["post-46073","topic","type-topic","status-closed","hentry","topic-tag-boundary-conditions","topic-tag-fan","topic-tag-fluent","topic-tag-rotating-machinery"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["18255"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":[null],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0"],"_btv_view_count":["2526"],"_bbp_subscription":["253655"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["46073"],"_bbp_forum_id":["27792"],"_bbp_engagement":["25","179540"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["121244"],"_bbp_last_active_id":["121244"],"_bbp_last_active_time":["2020-07-13 18:50:42"]},"test":"tjmay"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/46073","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\/46073\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=46073"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}