{"id":357954,"date":"2024-03-19T15:59:35","date_gmt":"2024-03-19T15:59:35","guid":{"rendered":"\/forum\/forums\/reply\/357954\/"},"modified":"2024-03-19T16:01:38","modified_gmt":"2024-03-19T16:01:38","slug":"357954","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/357954\/","title":{"rendered":"Reply To: Coupled Field Transient &#8211; Acoustic"},"content":{"rendered":"<p>&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;Hi&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;Yes viscosity (as given say in Eng. Data for Air and Water material ) provides attenuation, but can be hard to see for low frequencies and small propagation distances in gases.&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;Long time ago I looked into this and below is a summary:&lt;\/p&gt;&lt;p class=&#8221;&rdquo;&rdquo;MsoNormal&rdquo;&rdquo;&#8221;&gt;<img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/03\/19-03-2024-1710863950-mceclip0.png\" \/>&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-357954","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=\"Hi Yes viscosity (as given say in Eng. Data for Air and Water material ) provides attenuation, but can be hard to see for low frequencies and small propagation distances in gases. Long time ago I looked into this and below is a summary:\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/357954\/\" \/>\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: Coupled Field Transient \u2013 Acoustic | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Hi Yes viscosity (as given say in Eng. Data for Air and Water material ) provides attenuation, but can be hard to see for low frequencies and small propagation distances in gases. Long time ago I looked into this and below is a summary:\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/357954\/\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2024\/03\/19-03-2024-1710863950-mceclip0.png\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2024\/03\/19-03-2024-1710863950-mceclip0.png\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-03-19T15:59:35+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-03-19T16:01:38+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Reply To: Coupled Field Transient \u2013 Acoustic | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Hi Yes viscosity (as given say in Eng. Data for Air and Water material ) provides attenuation, but can be hard to see for low frequencies and small propagation distances in gases. Long time ago I looked into this and below is a summary:\" \/>\n\t\t<meta name=\"twitter:image\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2024\/03\/19-03-2024-1710863950-mceclip0.png\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/357954\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/357954\\\/#listItem\",\"name\":\"Reply To: Coupled Field Transient &#8211; Acoustic\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/357954\\\/#listItem\",\"position\":2,\"name\":\"Reply To: Coupled Field Transient &#8211; Acoustic\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}}]},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#organization\",\"name\":\"Ansys Learning Forum\",\"description\":\"Ansys Innovation Space\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/357954\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/357954\\\/\",\"name\":\"Reply To: Coupled Field Transient \\u2013 Acoustic | Ansys Learning Forum\",\"description\":\"Hi Yes viscosity (as given say in Eng. Data for Air and Water material ) provides attenuation, but can be hard to see for low frequencies and small propagation distances in gases. 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