{"id":34873,"date":"2019-04-22T10:22:36","date_gmt":"2019-04-22T10:22:36","guid":{"rendered":"\/forum\/forums\/topic\/fixing-mesh-quality\/"},"modified":"2019-04-22T10:22:36","modified_gmt":"2019-04-22T10:22:36","slug":"fixing-mesh-quality","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fixing-mesh-quality\/","title":{"rendered":"Fixing Mesh Quality"},"content":{"rendered":"<p>Hello<\/p>\n<p><\/p>\n<p>It seems the mesh around the airfoil I generated has a high aspect ratio and has poor quality elements<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/b039b67c-c457-46e8-b467-a96700a847cf\/cd0f7ee7-5d83-4130-be9c-aa3700a9ab3f_1.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n<p><\/p>\n<p>There are regions close to the airfoil wall where the mesh just becomes unstructured as shown below:<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/b039b67c-c457-46e8-b467-a96700a847cf\/c7cb4edd-c076-47cc-978c-aa3700aa1a7d_2.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/b039b67c-c457-46e8-b467-a96700a847cf\/4cc670ad-8602-4c3e-bb90-aa3700aa251b_3.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n<p><\/p>\n<p>The mesh was created using edge sizing with biases towards the airfoil wall, one of them shown below:<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/b039b67c-c457-46e8-b467-a96700a847cf\/dd74a893-0000-43ad-9453-aa3700abd6a9_4.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n<p><\/p>\n<p>The Mesh controls utilized are shown below:<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/b039b67c-c457-46e8-b467-a96700a847cf\/1d8109b2-cb4f-4207-a758-aa3700ac27f3_5.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n<p><\/p>\n<p>inflation was created to help capture the effects of the boundary layer.<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p>Also when I tried to run the simulation in fluent it gave this warning:<\/p>\n<p><\/p>\n<p>&#8220;Limited wall distance for 3 cells to 1.000000e-12.<\/p>\n<p><\/p>\n<p style=\"margin: 0px;\">Please inspect the wall distance by displaying the<\/p>\n<p><\/p>\n<p style=\"margin: 0px;\">contours of the &#8216;Cell Wall Distance&#8217; at the<\/p>\n<p><\/p>\n<p style=\"margin: 0px;\">boundaries. If you observe any irregularities we<\/p>\n<p><\/p>\n<p style=\"margin: 0px;\">recommend the use of an alternative algorithm to<\/p>\n<p><\/p>\n<p style=\"margin: 0px;\">correct the wall<\/p>\n<p><\/p>\n<p style=\"margin: 0px;\">Please select \/solve\/initialize\/repair-wall-distance<\/p>\n<p><\/p>\n<p style=\"margin: 0px;\">using the text user interface to switch to the<\/p>\n<p><\/p>\n<p style=\"margin: 0px;\">alternative algorithm&#8221;<\/p>\n<p><\/p>\n<p style=\"margin: 0px;\">How do I solve this issue?<\/p>\n","protected":false},"template":"","class_list":["post-34873","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["7045"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":[null],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0","0"],"_btv_view_count":["2764"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["34873"],"_bbp_forum_id":["27790"],"_bbp_engagement":["62","240","159013"],"_bbp_voice_count":["3"],"_bbp_reply_count":["2"],"_bbp_last_reply_id":["83609"],"_bbp_last_active_id":["83609"],"_bbp_last_active_time":["2019-04-24 09:08:27"]},"test":"akin3rd"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/34873","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\/34873\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=34873"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}