{"id":398068,"date":"2024-12-20T04:22:24","date_gmt":"2024-12-20T04:22:24","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/pathline-seed-control\/"},"modified":"2024-12-20T04:24:38","modified_gmt":"2024-12-20T04:24:38","slug":"pathline-seed-control","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/pathline-seed-control\/","title":{"rendered":"pathline seed control"},"content":{"rendered":"<p>&lt;p&gt;&lt;p&gt;pathline starts from the center of the facet, as shown in the figure below.&lt;\/p&gt;&lt;p&gt;the pathline is colored by stream function and it starts from inlet boundary in 1 and a rake in 2.&lt;\/p&gt;&lt;p&gt;stream function value means &lt;span class=&#8221;fontstyle0&#8243;&gt;the mass rate of flow between the streamlines.&lt;\/span&gt; shown in the second figure.&lt;\/p&gt;&lt;p&gt;This is a 2d axisymmetric case. in order to compare the block&#8217;s impact on flow field&lt;\/p&gt;&lt;p&gt;is it possible to quantitatively compare the pathline, like force pathlines to be equal mass flow rate? or could you suggest a way to compare the recirculation zone?&lt;\/p&gt;&lt;p&gt;Another observation,&nbsp; by comparing small block and large block pathline, see figure 3, the mass flow rate of stream function of large block is smaller.&nbsp;&lt;\/p&gt;&lt;p&gt;does this make sense?&lt;\/p&gt;&lt;p&gt;and I sum the stream function up, and found the total value is larger than the value I set for inlet condition.&lt;\/p&gt;&lt;p&gt;how to interpret stream function value here?&lt;\/p&gt;&lt;p&gt;Thank you.&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/12\/20-12-2024-1734667777-mceclip0.png\" \/>&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/12\/20-12-2024-1734668669-mceclip0.png\" \/><img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/12\/20-12-2024-1734668319-mceclip2.png\" \/>&lt;\/p&gt;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-398068","topic","type-topic","status-publish","hentry","topic-tag-2d-analysis","topic-tag-pathline-1","topic-tag-streamline-1"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27792"],"_bbp_topic_id":["398068"],"_bbp_author_ip":["24.3.104.227"],"_bbp_last_reply_id":["398087"],"_bbp_last_active_id":["398087"],"_bbp_last_active_time":["2024-12-20 09:54:53"],"_bbp_reply_count":["1"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["2"],"_bbp_engagement":["27819","15180"],"_btv_view_count":["222"],"_bbp_topic_status":["unanswered"],"_edit_last":["27819"],"_bbp_revision_log":["a:1:{i:398069;a:2:{s:6:\"author\";i:27819;s:6:\"reason\";s:0:\"\";}}"],"_bbp_subscription":["15180"]},"test":"ll00023mix-wvu-edu"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/398068","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":1,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/398068\/revisions"}],"predecessor-version":[{"id":398069,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/398068\/revisions\/398069"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=398068"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}