{"id":163614,"date":"2021-11-01T14:46:49","date_gmt":"2021-11-01T14:46:49","guid":{"rendered":"\/forum\/forums\/topic\/difference-between-solid-species-and-site-species\/"},"modified":"2021-11-04T13:52:13","modified_gmt":"2021-11-04T13:52:13","slug":"difference-between-solid-species-and-site-species","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/difference-between-solid-species-and-site-species\/","title":{"rendered":"Difference between ‘solid species’ and ‘site species’"},"content":{"rendered":"
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Hello,<\/p>\n

What is the difference between a 'solid\/bulk species' and a 'site species' when using the 'Wall surface reaction' Species Transport model in Fluent?<\/p>\n

I have read from the manual "Solid species are species that are deposit to, or etch from, wall boundaries or discrete-phase particles (e.g., Si(s)) and do not exist as fluid-phase species. If you are modeling wall surface reactions with site balancing, where species adsorb onto the wall surface, react, and then desorb off the surface, the Selected Site Species list will show all of the site species in the mixture."  This would mean understanding the difference between Solid and Site species entails understanding the difference between 'Deposition' and 'Adsorption'. But I could not find any concrete difference between deposition and adsorption (so how are they different?).<\/p>\n

Ex: I read about a surface reaction where,after the reaction, Carbon is released as a Solid species. Does this mean it is released as a discreet particle !?. Why is it not 'desorption' of Carbon into the fluid phase?<\/p>\n","protected":false},"template":"","class_list":["post-163614","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t