{"id":247553,"date":"2023-01-26T13:20:26","date_gmt":"2023-01-26T13:20:26","guid":{"rendered":"\/forum\/forums\/topic\/pressure-and-velocity-inlet-boundary-conditions\/"},"modified":"2023-01-26T13:20:26","modified_gmt":"2023-01-26T13:20:26","slug":"pressure-and-velocity-inlet-boundary-conditions","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/pressure-and-velocity-inlet-boundary-conditions\/","title":{"rendered":"Pressure and velocity inlet boundary conditions"},"content":{"rendered":"<div class=\"msg-s-event-listitem\n     msg-s-event-listitem--m2m-msg-followed-by-date-boundary\n    \n    \n     msg-s-event-listitem--last-in-group\n    \n    \n    \n    \n    \n    \" data-event-urn=\"urn:li:msg_message:(urn:li:fsd_profile:ACoAAArK2l0BsmUv8oELaCu8wPRMg2nSgV1R_gY,2-MTY3NDcxNzc3NTMzMmI5ODEyNi0wMDQmZDIyNWYxNWEtYzllZC00OWU0LWEzZWUtNjY5ZmQxMjBjOGM2XzAxMw==)\"><\/p>\n<div class=\"msg-s-event-listitem__message-bubble msg-s-event-listitem__message-bubble--msg-fwd-enabled\">\n<div class=\"msg-s-event-with-indicator display-flex \">\n<div class=\"msg-s-event__content\" dir=\"ltr\">\n<p class=\"msg-s-event-listitem__body t-14 t-black--light t-normal\n                    \">I have a valve with the fluid volume shown in the picture below. I know the Inlet pressure, inlet temperature and volume flow rate (from which I can compute the velocity). When I use the pressure at the inlet as pressure inlet boundary condition, the CFD simulation could not converge. However, when I use the computed velocity as an velocity inlet, it converges. But the pressure contour values from this simulation show far lower values than the pressure at the inlet. My question here is, how can I relate the velocity inlet&nbsp; with the pressure inlet in my boundary condition? or is there a way I can relate the pressure contour with the inlet pressure on the simulation <span style=\"font-size: 18.6667px\">results<\/span><span style=\"font-size: 18.6667px\">&nbsp;<\/span><span style=\"font-size: 14pt\"> when I used solely the velocity inlet as boundary condition? Thank you in advance for your assistance<\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"msg-s-event-with-indicator display-flex \n          msg-s-event-listitem__attachment-item--msg-fwd-enabled\n          \"><\/p>\n<div class=\"msg-s-event__content\">\n<div class=\"msg-s-event-listitem__message-bubble \n    msg-s-event-listitem__attachment-item\n    \n  \"><\/p>\n<div class=\"msg-s-event-listitem__actions-container artdeco-card\">\n<div id=\"ember543\" class=\"msg-s-event-listitem__reactions-options-ellipsis artdeco-dropdown artdeco-dropdown--placement-top artdeco-dropdown--justification-right ember-view\" aria-label=\"Options for the message from Aboma Wagari: Akkam jirtaYohannis, nagaa keetii? Gaaffii CFD tokko si gaafachuufan ture.&nbsp;\n&#039;&#039; I have a valve with the fluid volume shown in the picture below. I know the Inlet pressure, inlet temperature and volume flow rate (from which I can compute the velocity). When I use the pressure at the inlet as pressure inlet boundary condition, the CFD simulation could not converge. However, when I use the computed velocity as an velocity inlet, it converges. But the pressure contour values shows far lower values than the pressure at the inlet. My question here is how can I relate the velocity inlet&nbsp; with the pressure inlet in my boundary condition? or is there a way I can relate the pressure contour with the inlet pressure when I use solely the velocity inlet as boundary condition?\n\nThank you in advance for your assistance.\"><button id=\"ember544\" class=\"msg-s-event-listitem__options-trigger artdeco-dropdown__trigger artdeco-dropdown__trigger--placement-top ember-view\" type=\"button\"><\/button><\/p>\n<div class=\"msg-s-event-listitem__options-content\">\n<div id=\"ember545\" class=\"artdeco-dropdown__content artdeco-dropdown--is-dropdown-element artdeco-dropdown__content--has-arrow artdeco-dropdown__content--arrow-right artdeco-dropdown__content--justification-right artdeco-dropdown__content--placement-top ember-view\" aria-hidden=\"true\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"msg-s-event-listitem__image-container\"><button class=\"full-height full-width\" type=\"button\" data-artdeco-is-focused=\"true\"><span class=\"visually-hidden\">Click or press enter to display {:filename} in the image preview<\/span><img decoding=\"async\" id=\"ember513\" class=\"msg-s-event-listitem__image block ember-view\" src=\"https:\/\/www.linkedin.com\/dms\/D4D06AQGSYN_hik_F5Q\/messaging-attachmentFile\/0\/1674717766561?m=AQIQLe2e-R4sAwAAAYXuMlHaM4peytvokQ4NKdvRlH4YfTbp17vIVQxh-g&amp;ne=1&amp;v=beta&amp;t=gshp71hmDHQ68aTb9RFu2jpFFjogUMKHAq0wgH-Zwyo\"><\/button><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"template":"","class_list":["post-247553","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["28024","18096","218","288555","52254"],"_bbp_author_ip":["23.56.168.190"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["5381"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["247553"],"_bbp_forum_id":["27792"],"_bbp_engagement":["218","18096","28024","52254","288555"],"_bbp_voice_count":["5"],"_bbp_reply_count":["7"],"_bbp_last_reply_id":["339321"],"_bbp_last_active_id":["339321"],"_bbp_last_active_time":["2023-12-19 11:49:17"]},"test":"wagari-abomatechinvent-no"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/247553","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\/247553\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=247553"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}