{"id":404154,"date":"2025-01-08T18:04:07","date_gmt":"2025-01-08T18:04:07","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/spray-modeling\/"},"modified":"2025-01-08T18:04:07","modified_gmt":"2025-01-08T18:04:07","slug":"spray-modeling","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/spray-modeling\/","title":{"rendered":"Spray modeling"},"content":{"rendered":"<p>&lt;p&gt;I am using a multiphase VOF model to simulate water spray through an atomizer nozzle. I have meshed the volume extract of the atomizer nozzle. Both fluids are from the Fluent material database (water and air). I am using Viscous (Laminar) physics with multphase (VOF) and Energy is On. The walls are set to lose heat 5 W\/m2.K.&lt;\/p&gt;&lt;p&gt;As the sim is running I am seeing messages that indicate large variation in temperature which is unnatural for a simple water atomization.&lt;br&gt;&lt;br&gt;Example:&lt;\/p&gt;&lt;p&gt;&lt;span style=&#8221;color: #3598db;&#8221;&gt;Stabilizing temperature to enhance linear solver robustness.&lt;\/span&gt;&lt;\/p&gt;&lt;p&gt;&lt;span style=&#8221;color: #3598db;&#8221;&gt;temperature limited to 1.000000e+00 in 802733 cells on zone 5424 in domain 1&lt;\/span&gt;&lt;\/p&gt;&lt;p&gt;&lt;span style=&#8221;color: #3598db;&#8221;&gt;temperature limited to 5.000000e+03 in 220188 cells on zone 5424 in domain 1&lt;\/span&gt;&lt;\/p&gt;&lt;p&gt;&lt;span style=&#8221;color: #3598db;&#8221;&gt;temperature limited to 1.000000e+00 in 322 cells on zone 5423 in domain 1&lt;\/span&gt;&lt;\/p&gt;&lt;p&gt;&lt;span style=&#8221;color: #3598db;&#8221;&gt;temperature limited to 5.000000e+03 in 2034 cells on zone 5423 in domain 1&lt;\/span&gt;&lt;\/p&gt;&lt;p&gt;&lt;span style=&#8221;color: #3598db;&#8221;&gt;temperature limited to 1.000000e+00 in 5334 cells on zone 5421 in domain 1&lt;\/span&gt;&lt;\/p&gt;&lt;p&gt;&lt;span style=&#8221;color: #3598db;&#8221;&gt;temperature limited to 1.000000e+00 in 5064 cells on zone 5420 in domain 1&lt;\/span&gt;&lt;\/p&gt;&lt;p&gt;&lt;span style=&#8221;color: #3598db;&#8221;&gt;temperature limited to 1.000000e+00 on 1729 faces&lt;\/span&gt;&lt;\/p&gt;&lt;p&gt;&lt;span style=&#8221;color: #3598db;&#8221;&gt;temperature limited to 5.000000e+03 on 185 faces&lt;\/span&gt;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-404154","topic","type-topic","status-publish","hentry","topic-tag-atomizer","topic-tag-multiphase"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27792"],"_bbp_topic_id":["404154"],"_bbp_subscription":["437146","199"],"_bbp_author_ip":["47.160.222.183"],"_bbp_last_reply_id":["404501"],"_bbp_last_active_id":["404501"],"_bbp_last_active_time":["2025-01-10 23:26:23"],"_bbp_reply_count":["11"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["2"],"_bbp_engagement":["437146","199"],"_btv_view_count":["452"],"_bbp_topic_status":["unanswered"]},"test":"sjohnbenchmark-space-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/404154","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\/404154\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=404154"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}