


{"id":41303,"date":"2020-02-26T23:34:51","date_gmt":"2020-02-26T23:34:51","guid":{"rendered":"\/forum\/forums\/topic\/eulerian-model-for-evaporation-and-heat-exchange\/"},"modified":"2020-02-26T23:34:51","modified_gmt":"2020-02-26T23:34:51","slug":"eulerian-model-for-evaporation-and-heat-exchange","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/eulerian-model-for-evaporation-and-heat-exchange\/","title":{"rendered":"Eulerian model for evaporation and heat exchange"},"content":{"rendered":"<p>Hello,<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p>I am working on implementing a new simulation to model evaporation and heat at the air-sea interface under strong winds. I have looked at tutorials and the user&#8217;s guide and have come up with some starting parameters.&nbsp;<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p>I was hoping I could verify that these would be sufficient before trying the model.<\/p>\n<p><\/p>\n<p>gravity on<\/p>\n<p><\/p>\n<p>should energy equation be checked? I don&#8217;t believe it&#8217;s necessary here<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p>Models:<\/p>\n<p><\/p>\n<p>Multiphase &#8211; Eulerian &#8211; should either Multi-fluid VOF or Dens discrete phase model be applied as well?<\/p>\n<p><\/p>\n<p>Implicit formulation<\/p>\n<p><\/p>\n<p>Phase interaction: mass transfer &#8211; evaporation&nbsp;<\/p>\n<p><\/p>\n<p>surface tension &#8211; set constant<\/p>\n<p><\/p>\n<p>heat transfer &#8211; 2 resistance model&nbsp;<\/p>\n<p><\/p>\n<p>Viscous model &#8211; k- omega SST (dispersed?)<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p>Species transport model &#8211; does this need to be enabled with a moist air material for effective evaporation?<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p>Materials:<\/p>\n<p><\/p>\n<p>water, air, moist air? (mix of air\/water)<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p>Boundary conditions:<\/p>\n<p><\/p>\n<p>no slip on most boundaries, except wind applied either at inlet or at top of domain.&nbsp;<\/p>\n<p><\/p>\n<p>would consider applying periodic boundaries if I run this model with waves eventually.&nbsp;<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p>Solution methods: These I am not so certain of&nbsp;<\/p>\n<p><\/p>\n<p>Scheme: Phase coupled simple<\/p>\n<p><\/p>\n<p>Gradient: Least squares cell based<\/p>\n<p><\/p>\n<p>Pressure: Presto!<\/p>\n<p><\/p>\n<p>Momentum: First order upwind<\/p>\n<p><\/p>\n<p>Volume fraction: geo reconstruct<\/p>\n<p><\/p>\n<p>Transient formulation: bounded second order<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p>I plan to patch the water in (no waves initially).<\/p>\n<p><\/p>\n<p>I read on another forum that the evaporation needs to be driven by the relative humidity, I want to ensure this is done properly.&nbsp;<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p>I would appreciate any assistance in developing this model properly!<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p>Thanks,<br \/>Alex<\/p>\n","protected":false},"template":"","class_list":["post-41303","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["13483"],"_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"],"_btv_view_count":["544"],"_bbp_subscription":["236735"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["41303"],"_bbp_forum_id":["27792"],"_bbp_engagement":["22555","158003"],"_bbp_voice_count":["2"],"_bbp_reply_count":["12"],"_bbp_last_reply_id":["108128"],"_bbp_last_active_id":["108128"],"_bbp_last_active_time":["2020-03-18 08:12:47"]},"test":"soloviev"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/41303","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\/41303\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=41303"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}