{"id":338819,"date":"2023-12-15T20:47:21","date_gmt":"2023-12-15T20:47:21","guid":{"rendered":"\/forum\/?post_type=topic&p=338819"},"modified":"2023-12-18T10:49:57","modified_gmt":"2023-12-18T10:49:57","slug":"expression-for-droplet-location-monitoring","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/expression-for-droplet-location-monitoring\/","title":{"rendered":"Expression for droplet location monitoring"},"content":{"rendered":"

Hi there,<\/p>\n

for tracking a droplet on a flat surface, I am going to write an expression for each direction (x, y, z) then using three different monitors<\/p>\n

this is the top view of the problem, a flat solid surface and an initial blue droplet on that<\/p>\n

<\/a><\/p>\n

first defined three separate monitors based on this expression, only ask about one of them as the others would be likewise if I can solve the problem<\/p>\n

Average(IF(Volumefraction(phase=’liquid’)==0.5, x, x), [‘int_fluid’])<\/strong><\/p>\n

the coordinate system origin is in the middle of the domain set at 0, 0, 0<\/p>\n

1)what should I do for the false condition of the above expression? I do not want to have the postions of the non-interface positions in the point pools that the averaging would be done on all of them,<\/p>\n

now if I am not mistaken this expression, does average over all of the domain location cells as the pools of positions are filled with the droplet interface and the other points, even if I use mass weight still this is not a true expression, as includes the positions of the air (surrounded points)<\/p>\n

2) I thought maybe I can shift the domain as below<\/p>\n

<\/a><\/p>\n

and use this expression<\/p>\n

Average(IF(Volumefraction(phase=’liquid’)==0.5, x, 0 [mm]), [‘int_fluid’])<\/strong><\/p>\n

still not true,<\/p>\n

I wonder if somebody help me about this problem.<\/p>\n

 <\/p>\n

Regards,<\/p>\n

Amir<\/p>\n","protected":false},"template":"","class_list":["post-338819","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t