{"id":28484,"date":"2017-12-12T10:34:47","date_gmt":"2017-12-12T10:34:47","guid":{"rendered":"\/forum\/forums\/topic\/helmholtz-resonator\/"},"modified":"2017-12-12T10:34:47","modified_gmt":"2017-12-12T10:34:47","slug":"helmholtz-resonator","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/helmholtz-resonator\/","title":{"rendered":"Helmholtz Resonator"},"content":{"rendered":"<p>I&#8217;m working on finding modes of the cavity, especially Helmholtz&nbsp;mode by using acoustics ACT. I designed a basic model and I got some results but they do not match results which I got using Helmholtz&nbsp;resonator formula (below). I found some document about Helmholtz resonator in Acoustics ACT docs but it is not&nbsp;detailed<\/p>\n<p><\/p>\n<p>To&nbsp;find Helmholtz resonance, I defined surface of the hole as a 101325 Pa for 1 ATM air pressure condition. but I am not sure if this approach is&nbsp;correct. Because, pressure travel through the neck and in the air. We know neck length but don&#8217;t know the distance traveled in the air. &nbsp;(l&nbsp;attached SpaceClaim&nbsp;folder (18.0) of my model)<\/p>\n<p><\/p>\n<p>Best, Emir<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/44c683e3-4dd7-4998-97ba-a825007a4523\/28c65ac2-0b98-4dec-ae5a-a84700a9f0ce_helmhotzdiagram.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/44c683e3-4dd7-4998-97ba-a825007a4523\/5a55c6ae-c387-406c-a0d7-a84700aae273_helmholtz.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/44c683e3-4dd7-4998-97ba-a825007a4523\/db1aa21a-9c99-472b-85d7-a84700aaf9df_helmholtzresonator.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p>maybe&nbsp;this model can be worked ??<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/44c683e3-4dd7-4998-97ba-a825007a4523\/d3636c97-8162-40f6-9ab7-a84700bbab9e_helmholtz2.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n","protected":false},"template":"","class_list":["post-28484","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["651"],"_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","0","0","0","0"],"_btv_view_count":["3076"],"_bbp_subscription":["235454","290933","293381"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["28484"],"_bbp_forum_id":["27791"],"_bbp_engagement":["240","155007","290933","293381"],"_bbp_voice_count":["4"],"_bbp_reply_count":["5"],"_bbp_last_reply_id":["306520"],"_bbp_last_active_id":["306520"],"_bbp_last_active_time":["2023-09-13 04:50:07"]},"test":"emirdegirmenli"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/28484","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\/28484\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=28484"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}