{"id":358181,"date":"2024-03-20T16:50:06","date_gmt":"2024-03-20T16:50:06","guid":{"rendered":"\/forum\/forums\/reply\/358181\/"},"modified":"2024-03-20T16:50:06","modified_gmt":"2024-03-20T16:50:06","slug":"358181","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/358181\/","title":{"rendered":"Reply To: Aeroacoustics &#8211; Negative Decibels"},"content":{"rendered":"<p>&lt;p&gt;Hello Jack,&nbsp;&lt;\/p&gt;&lt;p&gt;negative Sound Pressure Level indicates that the pressure fluctuations being simulated are lower than the reference pressure used to calculate SPL, so your results would suggest that you may not be resolving those pressure fluctuations.&nbsp;&lt;\/p&gt;&lt;p&gt;Are you using the same mesh and time step size for both cases?&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-358181","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=\"Hello Jack, negative Sound Pressure Level indicates that the pressure fluctuations being simulated are lower than the reference pressure used to calculate SPL, so your results would suggest that you may not be resolving those pressure fluctuations. Are you using the same mesh and time step size for both cases?\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/358181\/\" \/>\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: Aeroacoustics \u2013 Negative Decibels | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Hello Jack, negative Sound Pressure Level indicates that the pressure fluctuations being simulated are lower than the reference pressure used to calculate SPL, so your results would suggest that you may not be resolving those pressure fluctuations. Are you using the same mesh and time step size for both cases?\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/358181\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-03-20T16:50:06+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-03-20T16:50:06+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Reply To: Aeroacoustics \u2013 Negative Decibels | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Hello Jack, negative Sound Pressure Level indicates that the pressure fluctuations being simulated are lower than the reference pressure used to calculate SPL, so your results would suggest that you may not be resolving those pressure fluctuations. 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Are you using the same mesh and time step size for both cases?","og:url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/358181\/","article:published_time":"2024-03-20T16:50:06+00:00","article:modified_time":"2024-03-20T16:50:06+00:00","twitter:card":"summary_large_image","twitter:title":"Reply To: Aeroacoustics \u2013 Negative Decibels | Ansys Learning Forum","twitter:description":"Hello Jack, negative Sound Pressure Level indicates that the pressure fluctuations being simulated are lower than the reference pressure used to calculate SPL, so your results would suggest that you may not be resolving those pressure fluctuations. 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