{"id":463106,"date":"2026-08-31T10:04:25","date_gmt":"2026-08-31T10:04:25","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/applying-a-vacuum-and-periodic-boundary-conditions\/"},"modified":"2026-08-31T10:04:25","modified_gmt":"2026-08-31T10:04:25","slug":"applying-a-vacuum-and-periodic-boundary-conditions","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/applying-a-vacuum-and-periodic-boundary-conditions\/","title":{"rendered":"Applying a vacuum and periodic boundary conditions."},"content":{"rendered":"<p>I have a domain representing a vacuum chamber. How do I set the pressure in the domain to represent a vacuum?<\/p>\n<p>I have an inlet injecting ozone into the chamber (vacuum) for a couple of minutes, followed by a hold period in which the inlet is stopped for a couple of minutes, then a purge period with an outlet (purging stage). How do I set up periodic boundary conditions to be applied automatically, and can this be translated into a script for submission to a supercomputing cluster? Or does setting up the case automatically ensure that the periodic boundary conditions are run when submitted to a supercomputing cluster?<\/p>\n<p>Thank you for your help.&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-463106","topic","type-topic","status-publish","hentry","topic-tag-Periodicboundarycondition-1","topic-tag-vacuum-2"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"I have a domain representing a vacuum chamber. How do I set the pressure in the domain to represent a vacuum? 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