{"id":160012,"date":"2021-07-01T15:50:54","date_gmt":"2021-07-01T15:50:54","guid":{"rendered":"\/forum\/forums\/topic\/heat-solver-simulation-for-periodic-structure\/"},"modified":"2021-07-29T08:00:43","modified_gmt":"2021-07-29T08:00:43","slug":"heat-solver-simulation-for-periodic-structure","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/heat-solver-simulation-for-periodic-structure\/","title":{"rendered":"Heat Solver Simulation for periodic structure"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>Hi,<\/p>\n<p>I am trying to design grating tunable reflector based on thermal simulation. I have few queries related to it, such as;<\/p>\n<p>1) Is it meaningful to simulate unit cell in thermal solver and use the same thermal profile in optical solver for periodic structure? For example, my unit cell period is 1 um, but I can not keep my thermal simulator boundaries restricted to unit cell dimensions. It should be large enough for converging the results. I observed that if I keep smaller simulation domain (eg. 1 um) and then increase it gradually, results keep changing and it gets saturated after certain lateral dimension. Basically simulation domain should be kept large enough and for that I need to expand lateral dimensions (x-axis) of substrate and device layers also, which is not the same as unit cell dimensions (1 um). In that case, grating is the replica of optical simulation, but substrate and device layer won&#039;t be the same. Heater is placed on the top of the grating, so this heat won&#039;t be restricted to 1 um unit cell, infact it will flow through the complete device layer.<\/p>\n<p>2) Since, it&#039;s a periodic structure, so heat source will also be repeated, so won&#039;t there be any cross heating effect? How to include this effect into simulation?<\/p>\n<div class=\"embedExternal embedImage\">\n<div class=\"embedExternal-content\">\n<a class=\"embedImage-link\" href=\"\/forum\/wp-content\/uploads\/forum-uploads\/560\/JZ4BLADP4A3U.png\" rel=\"nofollow noopener\" target=\"_blank\"><br \/>\n<img decoding=\"async\" class=\"embedImage-img\" src=\"\/forum\/wp-content\/uploads\/forum-uploads\/560\/JZ4BLADP4A3U.png\" alt=\"image.png\" \/><br \/>\n<\/a><\/p>\n","protected":false},"template":"","class_list":["post-160012","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_author_ip":[""],"_bbp_old_reply_author_name_id":["Anonymous"],"_bbp_old_is_reply_anonymous_id":["false"],"_btv_view_count":["630"],"_bbp_likes_count":["0"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["160012"],"_bbp_forum_id":["27833"],"_bbp_engagement":["14496","187213"],"_bbp_voice_count":["2"],"_bbp_reply_count":["18"],"_bbp_last_reply_id":["184157"],"_bbp_last_active_id":["184157"],"_bbp_last_active_time":["2021-07-29 08:00:43"]},"test":"prateeksha"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/160012","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\/160012\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=160012"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}