{"id":373753,"date":"2024-07-26T08:58:26","date_gmt":"2024-07-26T08:58:26","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/problem-with-using-multiple-moving-heat-flux-act-in-a-given-simulation\/"},"modified":"2024-07-29T14:42:47","modified_gmt":"2024-07-29T14:42:47","slug":"problem-with-using-multiple-moving-heat-flux-act-in-a-given-simulation","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/problem-with-using-multiple-moving-heat-flux-act-in-a-given-simulation\/","title":{"rendered":"Problem with using multiple Moving Heat Flux ACT in a given simulation"},"content":{"rendered":"

Hi all,<\/p>\n

I am performing a transient thermal analysis modelling a laser beam over a surface. For this, I am using the Moving Heat Flux ACT to model a gaussian spot of heat flux input that can move along a line. Said line is crossing three different solids, thus being decomposed into three “sub-lines”, one on each solid. Due to the way the ACT works, this means I need to instantiate three times the ACT, defining its trajectory on each of the sub-lines in turn.<\/p>\n

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The following screenshot displays how the green line cuts three different solids.<\/p>\n

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And there, we can see how the first three Moving Heat Flux ACTs each are defined around a different surface (in blue). They each handle the part of the green line that touches said surface.<\/p>\n

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 <\/p>\n

The transient analysis then shows that while the ACT works perfectly fine on the first two instances, it fails to input any power for the third one. I’m having trouble figuring out why exactly. The following screenshot shows that the maximum temperature in the model abruptly falls off starting near 512s, when the third instance of the ACT should kick in.<\/p>\n

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 <\/p>\n","protected":false},"template":"","class_list":["post-373753","topic","type-topic","status-closed","hentry","topic-tag-ACTAnsysACTAnsys-1","topic-tag-ansys-transient-thermal-2","topic-tag-mechanical"],"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