{"id":37346,"date":"2019-08-27T07:02:07","date_gmt":"2019-08-27T07:02:07","guid":{"rendered":"\/forum\/forums\/topic\/wrong-particle-trajectory-dpm\/"},"modified":"2019-08-27T07:02:07","modified_gmt":"2019-08-27T07:02:07","slug":"wrong-particle-trajectory-dpm","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/wrong-particle-trajectory-dpm\/","title":{"rendered":"wrong particle trajectory (DPM)"},"content":{"rendered":"<p>Hello,<\/p>\n<p><\/p>\n<p>I am new here so please correct me if I am doing something wrong.<\/p>\n<p><\/p>\n<p>I am trying to simulate the water spray of a tire on a wet road (my problem appears at the bow wave). To do that&nbsp;I inject water from a surface of the moving tire wall into the air stream (25 m\/s). The problem is that the particles are not getting ejected into the right direction.&nbsp;<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/fc0b9283-a211-489d-93d4-aab6006beec6\/a96a119b-0359-4244-bd7d-aab6006eed44_anmerkung-2019-08-27-082400.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n<p><\/p>\n<p>They should be ejected in to the direction of the red arrow and then get redirected by the air stream.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/fc0b9283-a211-489d-93d4-aab6006beec6\/e6461347-f994-490c-b20c-aab6006f3945_anmerkung-2019-08-27-082528.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n<p><\/p>\n<p>These are the velocities at the tire wall.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/fc0b9283-a211-489d-93d4-aab6006beec6\/171c493a-b399-4416-bd56-aab600703a54_anmerkung-2019-08-27-082650.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n<p><\/p>\n<p>Making the tire wall stationary does not help. What is funny is that I first got the &#8220;right&#8221; solution for the trajectories and then it suddenly became false then after some time I got the right solution again and now it is false again (without really changing the setup).&nbsp;<\/p>\n<p><\/p>\n<p>Reloading or completely reseting the simulation and setting it up again did not help as well.&nbsp;<\/p>\n<p><\/p>\n<p>I am fairly new to CFD so it is probably some dump mistake.&nbsp;<\/p>\n<p><\/p>\n<p>Please let me know if you need more information.<\/p>\n<p><\/p>\n<p>Thank you very much in advance.&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-37346","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["9522"],"_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":["275"],"_bbp_subscription":["242398"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["37346"],"_bbp_forum_id":["27792"],"_bbp_engagement":["22555","167938"],"_bbp_voice_count":["2"],"_bbp_reply_count":["3"],"_bbp_last_reply_id":["92998"],"_bbp_last_active_id":["92998"],"_bbp_last_active_time":["2019-08-27 14:19:48"]},"test":"ace993"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/37346","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\/37346\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=37346"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}