{"id":310981,"date":"2023-10-11T06:22:47","date_gmt":"2023-10-11T06:22:47","guid":{"rendered":"\/forum\/forums\/topic\/time-step-not-converging-in-transient-simulation-with-rpi-wall-boiling\/"},"modified":"2023-10-11T06:22:47","modified_gmt":"2023-10-11T06:22:47","slug":"time-step-not-converging-in-transient-simulation-with-rpi-wall-boiling","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/time-step-not-converging-in-transient-simulation-with-rpi-wall-boiling\/","title":{"rendered":"Time step not converging in Transient simulation with RPI Wall boiling"},"content":{"rendered":"<p>I am trying to simulate subcooled flow boiling in horizontal channel with Non-equilibrium RPI wall boiling model. It is transient simulation with Implicit scheme. Steady state simulation are not giving the true results so that scenario is already discarded. I have already performed grid independency and now trying to do time step converging for transient simulation. Started with time step of 5E-02 and reduced upto 1E-05. But, the results keep changing everytime. The results have shown to match when time step is arounf 5E-02. With smaller time step, I am not even seeing boiling starting.<\/p>\n<p>So, please help me how time step convergence can be achieved?&nbsp;<\/p>\n<p>The models and schemes are listed below.&nbsp; <img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/10\/11-10-2023-1697005145-Screenshot 2023-10-11 101339.png\" alt=\"\"><\/p>\n","protected":false},"template":"","class_list":["post-310981","topic","type-topic","status-closed","hentry","topic-tag-boiling","topic-tag-boiling-flow-in-fluent","topic-tag-eulerian-eulerian-1","topic-tag-fluent","topic-tag-multiphase-eulerian","topic-tag-subcooled-boiling-1"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["32604","852"],"_bbp_author_ip":["23.52.43.88"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["489"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["310981"],"_bbp_forum_id":["27792"],"_bbp_engagement":["852","32604"],"_bbp_voice_count":["2"],"_bbp_reply_count":["3"],"_bbp_last_reply_id":["312808"],"_bbp_last_active_id":["312808"],"_bbp_last_active_time":["2023-10-23 11:08:40"]},"test":"lirilsilviuaeu-ac-ae"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/310981","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\/310981\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=310981"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}