{"id":157129,"date":"2022-06-06T08:32:50","date_gmt":"2022-06-06T08:32:50","guid":{"rendered":"\/knowledge\/forums\/topic\/how-do-i-improve-convergence-of-a-simulation-that-contains-a-large-pressure-change-applied-at-a-domain-interface-2\/"},"modified":"2022-06-06T08:32:50","modified_gmt":"2022-06-06T08:32:50","slug":"how-do-i-improve-convergence-of-a-simulation-that-contains-a-large-pressure-change-applied-at-a-domain-interface-2","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/how-do-i-improve-convergence-of-a-simulation-that-contains-a-large-pressure-change-applied-at-a-domain-interface-2\/","title":{"rendered":"How do I improve convergence of a simulation that contains a large pressure change applied at a domain interface?"},"content":{"rendered":"<p>If you added a large pressure change at a domain interface and find that the momentum residuals are oscillating, then you can set the following expert parameter: <br \/> ggi ap relaxation = 0.3 <br \/> Note that this is not in the list of expert parameters listed in Pre, so to add it, use the following steps: <br \/> 1) Right click on the \u201cSolver\u201d object in the Outline tree and select Insert > Expert Parameter   <br \/> 2) Select one of the expert parameters, but do not change its default settings and press OK   <br \/> 3) Right click on expert parameters and select \u201cEdit in Command Editor\u201d   <br \/> 4) Add ggi ap relaxation = 0.3 and press \u201cProcess\u201d<\/p>\n","protected":false},"template":"","class_list":["post-157129","topic","type-topic","status-publish","hentry","topic-tag-ansys-fluent","topic-tag-convergence"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_wp_page_template":["default"],"_bbp_last_active_time":["06-06-2022 20:20"],"_bbp_forum_id":["27796"],"_btv_view_count":["609"],"_bbp_likes_count":["0"]},"test":"articlesansys-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/157129","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/157129\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/media?parent=157129"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}