{"id":380956,"date":"2024-08-28T22:16:52","date_gmt":"2024-08-28T22:16:52","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/asymmetric-heating-and-cooling-thermal-time-constant\/"},"modified":"2024-08-28T22:16:52","modified_gmt":"2024-08-28T22:16:52","slug":"asymmetric-heating-and-cooling-thermal-time-constant","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/asymmetric-heating-and-cooling-thermal-time-constant\/","title":{"rendered":"Asymmetric Heating and Cooling Thermal time constant"},"content":{"rendered":"<p>&lt;p&gt;I&rsquo;ve been simulating a TiN heater placed on top of a PN waveguide to obtain the thermal time constant using transient simulations. I applied power to the heater and monitored the temperature response in the waveguide.&lt;\/p&gt;&lt;p&gt;&lt;br&gt;In my measurements, the thermal response is asymmetric with a rise time of 15 &micro;s and a significantly longer fall time of 65 &micro;s. However, in the simulation, both the rise and fall times are symmetric at around 15 &micro;s.&lt;\/p&gt;&lt;p&gt;&lt;br&gt;I&rsquo;ve been trying to understand the cause of this discrepancy between the simulation and the real-world measurement, but I&rsquo;m having trouble figuring it out. What factors could be contributing to the symmetric response in the simulation, and how might I adjust the model to better reflect the asymmetry seen in the measurements?&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-380956","topic","type-topic","status-publish","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["247117","106247"],"_bbp_author_ip":["128.189.119.5"],"_btv_view_count":["117"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["380956"],"_bbp_forum_id":["27833"],"_bbp_engagement":["106247","247117"],"_bbp_voice_count":["2"],"_bbp_reply_count":["3"],"_bbp_last_reply_id":["383055"],"_bbp_last_active_id":["383055"],"_bbp_last_active_time":["2024-09-18 19:23:52"]},"test":"ensiyeece-ubc-ca"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/380956","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\/380956\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=380956"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}