{"id":403080,"date":"2024-12-31T12:55:17","date_gmt":"2024-12-31T12:55:17","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/403080\/"},"modified":"2025-01-03T09:52:00","modified_gmt":"2025-01-03T09:52:00","slug":"403080","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/403080\/","title":{"rendered":"Reply To: Added mass effect on natural frequencies"},"content":{"rendered":"<p>&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;Hi&lt;\/p&gt;&lt;p&gt;There is no easy way (so without modelling the water domain) to do this as this complex.&lt;\/p&gt;&lt;p&gt;Best and most common way for this is to use the modal acoustic analysis system as that will account for the fluid added mass.&lt;\/p&gt;&lt;p&gt;One needs to model the water inside and outside the pipe and structural pipe as a 3D solid (not as a surface body\/ meshed with shell elements).&lt;\/p&gt;&lt;p&gt;Many posts on this if you search.&lt;\/p&gt;&lt;p&gt;https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/structure-added-mass-vibration\/&lt;\/p&gt;&lt;p&gt;Best wishes&lt;\/p&gt;&lt;p&gt;Erik&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-403080","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=\"HiThere is no easy way (so without modelling the water domain) to do this as this complex.Best and most common way for this is to use the modal acoustic analysis system as that will account for the fluid added mass.One needs to model the water inside and outside the pipe and structural pipe as a\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/403080\/\" \/>\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: Added mass effect on natural frequencies | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"HiThere is no easy way (so without modelling the water domain) to do this as this complex.Best and most common way for this is to use the modal acoustic analysis system as that will account for the fluid added mass.One needs to model the water inside and outside the pipe and structural pipe as a\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/403080\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-12-31T12:55:17+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2025-01-03T09:52:00+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Reply To: Added mass effect on natural frequencies | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"HiThere is no easy way (so without modelling the water domain) to do this as this complex.Best and most common way for this is to use the modal acoustic analysis system as that will account for the fluid added mass.One needs to model the water inside and outside the pipe and structural pipe as a\" \/>\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\\\/403080\\\/#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\\\/403080\\\/#listItem\",\"name\":\"Reply To: Added mass effect on natural frequencies\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/403080\\\/#listItem\",\"position\":2,\"name\":\"Reply To: Added mass effect on natural frequencies\",\"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\\\/403080\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/403080\\\/\",\"name\":\"Reply To: Added mass effect on natural frequencies | Ansys Learning Forum\",\"description\":\"HiThere is no easy way (so without modelling the water domain) to do this as this complex.Best and most common way for this is to use the modal acoustic analysis system as that will account for the fluid added mass.One needs to model the water inside and outside the pipe and structural pipe as a\",\"inLanguage\":\"en-US\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/403080\\\/#breadcrumblist\"},\"datePublished\":\"2024-12-31T12:55:17+00:00\",\"dateModified\":\"2025-01-03T09:52:00+00:00\"},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#website\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/\",\"name\":\"Ansys Learning Forum\",\"description\":\"Ansys Innovation Space\",\"inLanguage\":\"en-US\",\"publisher\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#organization\"}}]}\n\t\t<\/script>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"Reply To: Added mass effect on natural frequencies | Ansys Learning Forum","description":"HiThere is no easy way (so without modelling the water domain) to do this as this complex.Best and most common way for this is to use the modal acoustic analysis system as that will account for the fluid added mass.One needs to model the water inside and outside the pipe and structural pipe as a","canonical_url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/403080\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/403080\/#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\/403080\/#listItem","name":"Reply To: Added mass effect on natural frequencies"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/403080\/#listItem","position":2,"name":"Reply To: Added mass effect on natural frequencies","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\/403080\/#webpage","url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/403080\/","name":"Reply To: Added mass effect on natural frequencies | Ansys Learning Forum","description":"HiThere is no easy way (so without modelling the water domain) to do this as this complex.Best and most common way for this is to use the modal acoustic analysis system as that will account for the fluid added mass.One needs to model the water inside and outside the pipe and structural pipe as a","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#website"},"breadcrumb":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/403080\/#breadcrumblist"},"datePublished":"2024-12-31T12:55:17+00:00","dateModified":"2025-01-03T09:52:00+00:00"},{"@type":"WebSite","@id":"https:\/\/innovationspace.ansys.com\/forum\/#website","url":"https:\/\/innovationspace.ansys.com\/forum\/","name":"Ansys Learning Forum","description":"Ansys Innovation Space","inLanguage":"en-US","publisher":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#organization"}}]},"og:locale":"en_US","og:site_name":"Ansys Learning Forum | Ansys Innovation Space","og:type":"article","og:title":"Reply To: Added mass effect on natural frequencies | Ansys Learning Forum","og:description":"HiThere is no easy way (so without modelling the water domain) to do this as this complex.Best and most common way for this is to use the modal acoustic analysis system as that will account for the fluid added mass.One needs to model the water inside and outside the pipe and structural pipe as a","og:url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/403080\/","article:published_time":"2024-12-31T12:55:17+00:00","article:modified_time":"2025-01-03T09:52:00+00:00","twitter:card":"summary_large_image","twitter:title":"Reply To: Added mass effect on natural frequencies | Ansys Learning Forum","twitter:description":"HiThere is no easy way (so without modelling the water domain) to do this as this complex.Best and most common way for this is to use the modal acoustic analysis system as that will account for the fluid added mass.One needs to model the water inside and outside the pipe and structural pipe as a"},"aioseo_meta_data":{"post_id":"403080","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"limit_modified_date":false,"created":"2025-10-17 22:51:26","updated":"2026-08-23 06:40:27","ai":null,"breadcrumb_settings":null,"seo_analyzer_scan_date":null},"aioseo_breadcrumb":"<div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/forum\" title=\"Home\">Home<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tReply To: Added mass effect on natural frequencies\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/innovationspace.ansys.com\/forum"},{"label":"Reply To: Added mass effect on natural frequencies","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/403080\/"}],"acf":[],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/403080","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/reply"}],"version-history":[{"count":1,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/403080\/revisions"}],"predecessor-version":[{"id":403363,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/403080\/revisions\/403363"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=403080"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}