{"id":320506,"date":"2023-12-01T16:42:39","date_gmt":"2023-12-01T16:42:39","guid":{"rendered":"\/forum\/forums\/topic\/calculation-of-a-centrifugal-pump-in-fluent\/"},"modified":"2023-12-01T16:42:39","modified_gmt":"2023-12-01T16:42:39","slug":"calculation-of-a-centrifugal-pump-in-fluent","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/calculation-of-a-centrifugal-pump-in-fluent\/","title":{"rendered":"Calculation of a centrifugal pump in Fluent"},"content":{"rendered":"<p><span class=\"HwtZe\" lang=\"en\"><span class=\"jCAhz ChMk0b\"><span class=\"ryNqvb\">Hi all.<\/span><\/span> <\/span><\/p>\n<p><span class=\"HwtZe\" lang=\"en\"><span class=\"jCAhz ChMk0b\"><span class=\"ryNqvb\">I am interested in the calculation of a centrifugal pump in fluent.<\/span><\/span> <\/span><\/p>\n<p><span class=\"HwtZe\" lang=\"en\"><span class=\"jCAhz ChMk0b\"><span class=\"ryNqvb\">Ansys has a video on this topic:<\/span><\/span> <\/span><\/p>\n<p><span class=\"HwtZe\" lang=\"en\"><span class=\"jCAhz ChMk0b\"><span class=\"ryNqvb\"><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/12\/01-12-2023-1701448626-mceclip0.png\"><\/span><\/span><\/span><\/p>\n<p><span class=\"HwtZe\" lang=\"en\"><span class=\"jCAhz ChMk0b\"><span class=\"ryNqvb\">The video sets the inlet pressure to 0, which means atmospheric pressure, and the outlet flow. Fine. In real life, a centrifugal pump does not work like that, it needs to gain pressure, it is first launched onto a closed valve and then it is slowly opened to equalize the pressure, so the outlet pressure can be, for example, 10 MPa.<\/span><\/span><\/span><\/p>\n<p><span class=\"HwtZe\" lang=\"en\"><span class=\"jCAhz ChMk0b\"><span class=\"ryNqvb\"> So how can I carry out such a trick? My pump produces a nominal output of 500 m3\/day. Can I set the inlet flow and mute the outlet? Then I will look at the graph of the pressure in the pump cavity, when the pressure increases, I will stop the calculation and increase the outlet diameter each time, for example 0, 10, 50 and 100 mm &#8211; this is the desired diameter. Will the pump reach the required pressure?<\/span><\/span><\/span><\/p>\n<p><span class=\"HwtZe\" lang=\"en\"><span class=\"jCAhz ChMk0b\"><span class=\"ryNqvb\">___<\/span><\/span><\/span><\/p>\n<p><span class=\"HwtZe\" lang=\"en\"><span class=\"jCAhz ChMk0b\"><span class=\"ryNqvb\">I calculated the pump as an ansis video, the inlet pressure is 0 and the outlet flow rate is 500 m3\/day. But with this condition, I have a lot of negative pressure. Why?<\/span><\/span><\/span><\/p>\n<p><span class=\"HwtZe\" lang=\"en\"><span class=\"jCAhz ChMk0b\"><span class=\"ryNqvb\"><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/12\/01-12-2023-1701448934-mceclip1.png\"><\/span><\/span><\/span><\/p>\n<p><span class=\"HwtZe\" lang=\"en\"><span class=\"jCAhz ChMk0b\"><span class=\"ryNqvb\"><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/12\/01-12-2023-1701448944-mceclip2.png\"><\/span><\/span><\/span><\/p>\n","protected":false},"template":"","class_list":["post-320506","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["257647","18096"],"_bbp_author_ip":["23.52.43.81"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["1100"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["320506"],"_bbp_forum_id":["27792"],"_bbp_engagement":["18096","257647"],"_bbp_voice_count":["2"],"_bbp_reply_count":["4"],"_bbp_last_reply_id":["327166"],"_bbp_last_active_id":["327166"],"_bbp_last_active_time":["2023-12-09 09:09:46"]},"test":"javat33489gmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/320506","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\/320506\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=320506"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}