{"id":352459,"date":"2024-02-20T08:02:18","date_gmt":"2024-02-20T08:02:18","guid":{"rendered":"\/forum\/forums\/topic\/modeling-jca-sound-absorption-model\/"},"modified":"2024-02-20T08:02:18","modified_gmt":"2024-02-20T08:02:18","slug":"modeling-jca-sound-absorption-model","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/modeling-jca-sound-absorption-model\/","title":{"rendered":"Modeling JCA sound absorption model"},"content":{"rendered":"<p>Hello everyone,<\/p>\n<p>I have conducted experiments on the sound absorption coefficient and impedance ratio using the impedance tube with the two-microphone transfer function method for fiber-reinforced CEMENT COMPOSITE (This involved mixing fibers WITH CEMENT, SAND AND WATER at three volume ratios and three lengths). Now, I am interested in mathematically and numerically modeling it using the JCA (Johnson-Champoux-Allard) model. However, the JCA model requires five parameters as inputs, whereas I only have one parameter, which is porosity.<\/p>\n<p>Therefore, I intend to utilize ANSYS to implement the JCA model and perform parameter optimization for the remaining four unknown parameters using curve fitting or any other suitable method. In curve fitting, I plan to use either impedance ratio or sound absorption coefficient, which I obtained experimentally, to optimize the model results to best fit the experimental results for sound absorption. Once the best fit is achieved, I can then optimize the unknown four parameters.<\/p>\n<p>However, I am completely new to ANSYS and unsure where to begin. Could anyone provide guidance on how to proceed? Thank you very much.<\/p>\n","protected":false},"template":"","class_list":["post-352459","topic","type-topic","status-closed","hentry","topic-tag-acousticsimulation-1"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["339546","88","349727"],"_bbp_author_ip":["23.52.43.81"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["1179"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["352459"],"_bbp_forum_id":["27822"],"_bbp_engagement":["88","339546"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["352526"],"_bbp_last_active_id":["352526"],"_bbp_last_active_time":["2024-02-20 12:37:41"]},"test":"s3855403student-rmit-edu-au"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/352459","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\/352459\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=352459"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}