{"id":55119,"date":"2017-10-17T07:00:03","date_gmt":"2017-10-17T07:00:03","guid":{"rendered":"\/forum\/forums\/reply\/55119\/"},"modified":"2017-10-17T07:00:03","modified_gmt":"2017-10-17T07:00:03","slug":"55119","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/55119\/","title":{"rendered":"Reply To: Define acoustic impedance boundary condition at wall"},"content":{"rendered":"<p><span style=\"font-family: 'Open Sans', Arial, Helvetica, sans-serif; font-size: 15px;\">The impedance boundary condition (IBC) lies in between a traditional reflective boundary condition and a fully non-reflective boundary condition. There is no direct implementation of an impedance based wall boundary condition. However one. The soft walls where the acoustics wave are partially dampened \/partially reflected are then modeled as velocity inlet with velocity equal to zero. On this inlet one can then use the impedance boundary. With zero velocity inlet there is not heat coming with convection. To disable heat diffusion one has to disable inlet diffusion in the energy equation. You can do this under the TUI: \/define\/models\/energy then switch include diffusion at inlets? to no Keywords: Acoustic, Impedance, Wall, BC, Boundary,<\/span><\/p>\n","protected":false},"template":"","class_list":["post-55119","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"The impedance boundary condition (IBC) lies in between a traditional reflective boundary condition and a fully non-reflective boundary condition. There is no direct implementation of an impedance based wall boundary condition. However one. The soft walls where the acoustics wave are partially dampened \/partially reflected are then modeled as velocity inlet with velocity equal to\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/55119\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Ansys Learning Forum | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Reply To: Define acoustic impedance boundary condition at wall | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"The impedance boundary condition (IBC) lies in between a traditional reflective boundary condition and a fully non-reflective boundary condition. There is no direct implementation of an impedance based wall boundary condition. However one. The soft walls where the acoustics wave are partially dampened \/partially reflected are then modeled as velocity inlet with velocity equal to\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/55119\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2017-10-17T07:00:03+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2017-10-17T07:00:03+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Reply To: Define acoustic impedance boundary condition at wall | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"The impedance boundary condition (IBC) lies in between a traditional reflective boundary condition and a fully non-reflective boundary condition. There is no direct implementation of an impedance based wall boundary condition. However one. 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