{"id":157155,"date":"2022-06-06T08:32:55","date_gmt":"2022-06-06T08:32:55","guid":{"rendered":"\/knowledge\/forums\/topic\/how-to-calculate-a-fraction-of-surface-area-where-a-variable-is-less-than-a-percentage-of-average-variable-2\/"},"modified":"2022-06-06T08:32:55","modified_gmt":"2022-06-06T08:32:55","slug":"how-to-calculate-a-fraction-of-surface-area-where-a-variable-is-less-than-a-percentage-of-average-variable-2","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/how-to-calculate-a-fraction-of-surface-area-where-a-variable-is-less-than-a-percentage-of-average-variable-2\/","title":{"rendered":"How to calculate a fraction of surface area where a variable is less than a percentage of average variable?"},"content":{"rendered":"<p>The area fraction on a surface where a variable is less than a certain percentage of the average variable can be calculated with the following expressions. A report definition can then be created based on the uniformity expression to monitor the value during the run.   <br \/> threshold = 0.1 <br \/> avg = Average(StaticTemperature,[&#8216;outlet&#8217;],Weight =&#8217;Area&#8217;) <br \/> areaoutlet = Area([&#8216;outlet&#8217;]) <br \/> uniformity = Sum(IF(abs(StaticTemperature-avg)\/avg<threshold,1,0),['outlet'],Weight = 'Area')\/areaoutlet \n\n","protected":false},"template":"","class_list":["post-157155","topic","type-topic","status-publish","hentry","topic-tag-ansys-cfd-post","topic-tag-area-fraction","topic-tag-expression"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"The area fraction on a surface where a variable is less than a certain percentage of the average variable can be calculated with the following expressions. A report definition can then be created based on the uniformity expression to monitor the value during the run. threshold = 0.1 avg = Average(StaticTemperature,[&#039;outlet&#039;],Weight =&#039;Area&#039;) areaoutlet = Area([&#039;outlet&#039;])\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/how-to-calculate-a-fraction-of-surface-area-where-a-variable-is-less-than-a-percentage-of-average-variable-2\/\" \/>\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 Knowledge | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"How to calculate a fraction of surface area where a variable is less than a percentage of average variable? | Ansys Knowledge\" \/>\n\t\t<meta property=\"og:description\" content=\"The area fraction on a surface where a variable is less than a certain percentage of the average variable can be calculated with the following expressions. A report definition can then be created based on the uniformity expression to monitor the value during the run. threshold = 0.1 avg = Average(StaticTemperature,[&#039;outlet&#039;],Weight =&#039;Area&#039;) areaoutlet = Area([&#039;outlet&#039;])\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/how-to-calculate-a-fraction-of-surface-area-where-a-variable-is-less-than-a-percentage-of-average-variable-2\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2022-06-06T08:32:55+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2022-06-06T08:32:55+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"How to calculate a fraction of surface area where a variable is less than a percentage of average variable? | Ansys Knowledge\" \/>\n\t\t<meta name=\"twitter:description\" content=\"The area fraction on a surface where a variable is less than a certain percentage of the average variable can be calculated with the following expressions. A report definition can then be created based on the uniformity expression to monitor the value during the run. threshold = 0.1 avg = Average(StaticTemperature,[&#039;outlet&#039;],Weight =&#039;Area&#039;) areaoutlet = Area([&#039;outlet&#039;])\" \/>\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\\\/knowledge\\\/forums\\\/topic\\\/how-to-calculate-a-fraction-of-surface-area-where-a-variable-is-less-than-a-percentage-of-average-variable-2\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/#listItem\",\"position\":2,\"name\":\"Topics\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/expression\\\/#listItem\",\"name\":\"expression\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/expression\\\/#listItem\",\"position\":3,\"name\":\"expression\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/expression\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/how-to-calculate-a-fraction-of-surface-area-where-a-variable-is-less-than-a-percentage-of-average-variable-2\\\/#listItem\",\"name\":\"How to calculate a fraction of surface area where a variable is less than a percentage of average variable?\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/how-to-calculate-a-fraction-of-surface-area-where-a-variable-is-less-than-a-percentage-of-average-variable-2\\\/#listItem\",\"position\":4,\"name\":\"How to calculate a fraction of surface area where a variable is less than a percentage of average variable?\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/expression\\\/#listItem\",\"name\":\"expression\"}}]},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/#organization\",\"name\":\"Ansys Knowledge\",\"description\":\"Ansys Innovation Space\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/how-to-calculate-a-fraction-of-surface-area-where-a-variable-is-less-than-a-percentage-of-average-variable-2\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/how-to-calculate-a-fraction-of-surface-area-where-a-variable-is-less-than-a-percentage-of-average-variable-2\\\/\",\"name\":\"How to calculate a fraction of surface area where a variable is less than a percentage of average variable? | Ansys Knowledge\",\"description\":\"The area fraction on a surface where a variable is less than a certain percentage of the average variable can be calculated with the following expressions. 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