{"id":318993,"date":"2023-11-22T09:43:59","date_gmt":"2023-11-22T09:43:59","guid":{"rendered":"\/forum\/forums\/topic\/wrong-frequency-response-for-boundary-condition\/"},"modified":"2023-11-22T09:43:59","modified_gmt":"2023-11-22T09:43:59","slug":"wrong-frequency-response-for-boundary-condition","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/wrong-frequency-response-for-boundary-condition\/","title":{"rendered":"Wrong frequency response for boundary condition"},"content":{"rendered":"<p>Hi,<\/p>\n<p>I have the following Problem:<\/p>\n<p>My only&nbsp; boundary condition is a surface velocity of 1m\/s for a frequency range from 0 to 500Hz in 10 steps, and the fluid is&nbsp; air.&nbsp;<\/p>\n<p>But my output of the frequency response on the same surface is 0.833-0.877m\/s. What did Iwrong? And what can i do to avoid the error ?<\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/11\/22-11-2023-1700645788-Ansys_hilfe1.PNG\" alt=\"\"><\/p>\n<p>If there is no Element behind the surface, the frequency response is 1m\/s.<\/p>\n<p>&nbsp;<\/p>\n<p>Here is a link to get the files for Ansys:<\/p>\n<p>https:\/\/we.tl\/t-K4hFG4LjMf<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>Thanks for help!<\/p>\n","protected":false},"template":"","class_list":["post-318993","topic","type-topic","status-closed","hentry","topic-tag-acoustic-1","topic-tag-harmonic"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hi,I have the following Problem:My only boundary condition is a surface velocity of 1m\/s for a frequency range from 0 to 500Hz in 10 steps, and the fluid is air. But my output of the frequency response on the same surface is 0.833-0.877m\/s. What did Iwrong? 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And what can i do to avoid the error ?If\" \/>\n\t\t<meta name=\"twitter:image\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2023\/11\/22-11-2023-1700645788-Ansys_hilfe1.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\\\/topic\\\/wrong-frequency-response-for-boundary-condition\\\/#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\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"position\":2,\"name\":\"Topics\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/harmonic\\\/#listItem\",\"name\":\"harmonic\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/harmonic\\\/#listItem\",\"position\":3,\"name\":\"harmonic\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/harmonic\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/wrong-frequency-response-for-boundary-condition\\\/#listItem\",\"name\":\"Wrong frequency response for boundary condition\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/wrong-frequency-response-for-boundary-condition\\\/#listItem\",\"position\":4,\"name\":\"Wrong frequency response for boundary condition\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/harmonic\\\/#listItem\",\"name\":\"harmonic\"}}]},{\"@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\\\/topic\\\/wrong-frequency-response-for-boundary-condition\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/wrong-frequency-response-for-boundary-condition\\\/\",\"name\":\"Wrong frequency response for boundary condition | Ansys Learning Forum\",\"description\":\"Hi,I have the following Problem:My only boundary condition is a surface velocity of 1m\\\/s for a frequency range from 0 to 500Hz in 10 steps, and the fluid is air. 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But my output of the frequency response on the same surface is 0.833-0.877m\/s. What did Iwrong? 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But my output of the frequency response on the same surface is 0.833-0.877m\/s. What did Iwrong? And what can i do to avoid the error ?If","og:url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/wrong-frequency-response-for-boundary-condition\/","og:image":"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2023\/11\/22-11-2023-1700645788-Ansys_hilfe1.PNG","og:image:secure_url":"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2023\/11\/22-11-2023-1700645788-Ansys_hilfe1.PNG","article:published_time":"2023-11-22T09:43:59+00:00","article:modified_time":"2023-11-22T09:43:59+00:00","twitter:card":"summary_large_image","twitter:title":"Wrong frequency response for boundary condition | Ansys Learning Forum","twitter:description":"Hi,I have the following Problem:My only boundary condition is a surface velocity of 1m\/s for a frequency range from 0 to 500Hz in 10 steps, and the fluid is air. 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