{"id":251096,"date":"2023-02-22T19:40:02","date_gmt":"2023-02-22T19:40:02","guid":{"rendered":"\/forum\/forums\/topic\/unit-of-ffowcs-williams-hawkings-model\/"},"modified":"2023-02-22T19:49:13","modified_gmt":"2023-02-22T19:49:13","slug":"unit-of-ffowcs-williams-hawkings-model","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/unit-of-ffowcs-williams-hawkings-model\/","title":{"rendered":"Unit of Ffowcs Williams Hawkings model"},"content":{"rendered":"<p><span style=\"font-size: 18.6667px\">Hello,<\/span><\/p>\n<p><span style=\"font-size: 18.6667px\">I calculate LES+Ffowcs Williams Hawkings model.<\/span><\/p>\n<p><span style=\"font-size: 18.6667px\">I noticed that we must use [m] to allocate the acoustic receiver position because the unit in the dialog box does not change (figure1), even I setted up unit system of length as [in]. So my question is what is the unit of the calculated acoustic pressure? Because I setted up the pressure unit system as [psi], I thought the acoustic pressure was also [psi]. But considering that the receiver position always uses SI unit, acoustic pressure is in [Pa]? And there&#8217;s no discreption about unit in the result (figure2).<\/span><\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/02\/22-02-2023-1677095208-mceclip0.png\"><\/p>\n<p>figure 1<\/p>\n<p><a class=\"wp-colorbox-image cboxElement\" href=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/02\/22-02-2023-1677094613-mceclip1.png\"><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/02\/22-02-2023-1677094613-mceclip1.png\">figure2<\/a><\/p>\n","protected":false},"template":"","class_list":["post-251096","topic","type-topic","status-closed","hentry","topic-tag-ffowcs-william-hawkings-2","topic-tag-length-unit"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hello,I calculate LES+Ffowcs Williams Hawkings model.I noticed that we must use [m] to allocate the acoustic receiver position because the unit in the dialog box does not change (figure1), even I setted up unit system of length as [in]. 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So my question is what is the unit of the calculated acoustic pressure? 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