{"id":458825,"date":"2026-05-25T22:25:26","date_gmt":"2026-05-25T22:25:26","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/yplus-value\/"},"modified":"2026-05-25T22:25:26","modified_gmt":"2026-05-25T22:25:26","slug":"yplus-value","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/yplus-value\/","title":{"rendered":"Yplus value"},"content":{"rendered":"

<div class=”n6owBd awi2gc” data-sfc-cp=”” data-sfc-root=”c” data-sfc-cb=”” data-hveid=”CAAIChAB” data-complete=”true” data-copy-service-computed-style=”font-family: "Google Sans", Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px 0px 16px; text-decoration: none; border-bottom: 0px rgb(230, 232, 240);”>Hello<!–TgQPHd|[]–><\/div><div class=”n6owBd awi2gc” data-sfc-cp=”” data-sfc-root=”c” data-sfc-cb=”” data-hveid=”CAAIChAB” data-complete=”true” data-copy-service-computed-style=”font-family: "Google Sans", Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px 0px 16px; text-decoration: none; border-bottom: 0px rgb(230, 232, 240);”> <\/div><div class=”n6owBd awi2gc” data-sfc-cp=”” data-sfc-root=”c” data-sfc-cb=”” data-hveid=”CAAIChAD” data-complete=”true” data-copy-service-computed-style=”font-family: "Google Sans", Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 12px 0px 16px; text-decoration: none; border-bottom: 0px rgb(230, 232, 240);”>I am conducting an external aerodynamic analysis on a geometry characterized by a specific length and diameter. My goal is to capture transient\/viscous effects accurately by achieving a wall Yplus approx 1 using the SST (k-omega) turbulence model.<!–TgQPHd|[]–><\/div><div class=”n6owBd awi2gc” data-sfc-cp=”” data-sfc-root=”c” data-sfc-cb=”” data-hveid=”CAAIChAD” data-complete=”true” data-copy-service-computed-style=”font-family: "Google Sans", Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 12px 0px 16px; text-decoration: none; border-bottom: 0px rgb(230, 232, 240);”> <\/div><div class=”n6owBd awi2gc” data-sfc-cp=”” data-sfc-root=”c” data-sfc-cb=”” data-hveid=”CAAIChAH” data-complete=”true” data-copy-service-computed-style=”font-family: "Google Sans", Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 12px 0px 16px; text-decoration: none; border-bottom: 0px rgb(230, 232, 240);”>I have calculated my initial cell height using a standard Yplus calculator based on my reference length, diameter, and freestream velocity. However, my current meshing attempts are exceeding my hardware limits, resulting in a massive cell count and extreme computational times.<!–TgQPHd|[]–><\/div><div class=”n6owBd awi2gc” data-sfc-cp=”” data-sfc-root=”c” data-sfc-cb=”” data-hveid=”CAAIChAH” data-complete=”true” data-copy-service-computed-style=”font-family: "Google Sans", Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 12px 0px 16px; text-decoration: none; border-bottom: 0px rgb(230, 232, 240);”> <\/div><div class=”n6owBd awi2gc” data-sfc-cp=”” data-sfc-root=”c” data-sfc-cb=”” data-hveid=”CAAIChAK” data-complete=”true” data-copy-service-computed-style=”font-family: "Google Sans", Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 12px 0px 16px; text-decoration: none; border-bottom: 0px rgb(230, 232, 240);”>Is it fundamentally possible to achieve a Yplus near 1 on the body while keeping the absolute total volume mesh (total cells) count under 3 million cells? If so, what are the best practices in the Fluent Watertight Geometry workflow.<!–TgQPHd|[]–><\/div><div class=”n6owBd awi2gc” data-sfc-cp=”” data-sfc-root=”c” data-sfc-cb=”” data-hveid=”CAAIChAK” data-complete=”true” data-copy-service-computed-style=”font-family: "Google Sans", Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 12px 0px 16px; text-decoration: none; border-bottom: 0px rgb(230, 232, 240);”> <\/div><div class=”n6owBd awi2gc” data-sfc-cp=”” data-sfc-root=”c” data-sfc-cb=”” data-hveid=”CAAIChAN” data-complete=”true” aria-owns=”action-menu-parent-container” data-copy-service-computed-style=”font-family: "Google Sans", Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 12px 0px 0px; text-decoration: none; border-bottom: 0px rgb(230, 232, 240);”>Thank you for your guidance<\/div><\/p>\n","protected":false},"template":"","class_list":["post-458825","topic","type-topic","status-publish","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27792"],"_bbp_topic_id":["458825"],"_bbp_author_ip":["2a02:1388:b04:5be5:589c:8f6c:a76:b42f"],"_bbp_last_reply_id":["458842"],"_bbp_last_active_id":["458842"],"_bbp_last_active_time":["2026-05-26 07:49:56"],"_bbp_reply_count":["1"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["2"],"_bbp_engagement":["556919","13988"],"_btv_view_count":["37"],"_bbp_topic_status":["unanswered"],"_bbp_subscription":["13988"]},"test":"sas2400038uoa-gr"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/458825","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/458825\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=458825"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}