{"id":34301,"date":"2019-03-28T15:15:50","date_gmt":"2019-03-28T15:15:50","guid":{"rendered":"\/forum\/forums\/topic\/problems-in-multiphase-flow\/"},"modified":"2019-03-28T15:15:50","modified_gmt":"2019-03-28T15:15:50","slug":"problems-in-multiphase-flow","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/problems-in-multiphase-flow\/","title":{"rendered":"Problems in Multiphase Flow"},"content":{"rendered":"<p>Dear all,<\/p>\n<p><\/p>\n<p>I have been dealing with multiphase flow inside the helically-coiled tube. My case is going to validate the case from an experimental study. The first try is, I do simulation in the single-phase to get the initial solution then continue with multiphase flow.<\/p>\n<p><\/p>\n<p>I set my simulation with Coupled solver and changed several URF to make it stable. But on the process, I have a message that my turbulent viscosity is limited to viscosity ratio and also temperature limited then turn the simulation into diverged with divergence detected in k, vof-1, and pressure coupled.<\/p>\n<p><\/p>\n<p>I use RPI wall boiling model in my case with the second option (Non-equilibrium Boiling). In my BC, in the inlet I put the value of T.I: 4% with my hydraulic dia. and the outlet is gauge pressure 0. The heated wall is set up based on the heat flux in the experimental case, and I put adiabatic wall to ensure fully-developed flow when entered into the domain.<\/p>\n<p><\/p>\n<p>Please give some recommendation on this particular problem. Thanks.<\/p>\n<p><\/p>\n<p>Best Regards,<\/p>\n<p><\/p>\n<p>Luthfi Ady Farizan Haryoko<\/p>\n","protected":false},"template":"","class_list":["post-34301","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["6473"],"_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","0"],"_btv_view_count":["1047"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["34301"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","22555","159642"],"_bbp_voice_count":["3"],"_bbp_reply_count":["13"],"_bbp_last_reply_id":["82036"],"_bbp_last_active_id":["82036"],"_bbp_last_active_time":["2019-04-04 05:12:53"]},"test":"farizanluthfi"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/34301","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\/34301\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=34301"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}