{"id":48472,"date":"2020-09-28T06:35:17","date_gmt":"2020-09-28T06:35:17","guid":{"rendered":"\/forum\/forums\/topic\/how-to-conduct-solar-radiation-simulation-in-ansys-fluent\/"},"modified":"2020-09-28T06:35:17","modified_gmt":"2020-09-28T06:35:17","slug":"how-to-conduct-solar-radiation-simulation-in-ansys-fluent","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-to-conduct-solar-radiation-simulation-in-ansys-fluent\/","title":{"rendered":"How to conduct solar radiation simulation in Ansys Fluent?"},"content":{"rendered":"
\n
\n

Hello Everyone,<\/p>\n

I am conducting solar radiation simulation for concrete road 0.2m thickness and concrete wall of 5 m height and 20 m length but getting un-realistic results. The details of the fluent boundary condition settings are as follows:<\/p>\n

Radiation Model- DO<\/p>\n

Solar Ray Tracing: Solar calculator- I have defined altitude, longitude, time zone, day, month, time, East-North mesh direction.<\/p>\n

Direct Solar Irradiation- 1040 w\/m2, Diffuse Solar Irradiation- 95 w\/m2, Spectral Fraction- 0.5<\/p>\n

Concrete material properties:<\/p>\n

Density: 2000 Kg\/m3<\/p>\n

Sp. Heat: 960 J\/kg.K<\/p>\n

Thermal Conductivity: 1.5 W\/m.K<\/p>\n

Absorption Coefficient: 1.7 1\/m<\/p>\n

Scattering Coefficient: 0 1\/m<\/p>\n

Refractive Index: 0<\/p>\n

Air material properties:<\/p>\n

Density: ideal gas<\/p>\n

Sp. Heat: 1006.43 J\/kg.K<\/p>\n

Thermal Conductivity: 0.0242 W\/m.K<\/p>\n

Absorption Coefficient: 0 1\/m<\/p>\n

Scattering Coefficient: 0 1\/m<\/p>\n

Refractive Index: 0<\/p>\n

Concrete road and wall boundary conditions:<\/p>\n

Thermal condition- coupled, Emissivity- 0.9, Material- concrete<\/p>\n

Radiation BC type- Opaque, Diffuse fraction- 1, Solar BC- participate in solar ray tracing, <\/p>\n

Absorptivity: Direct Visible- 0.6 and Direct IR-0.6<\/p>\n

Inlet BC: 1m\/s, 42C temp., default radiation tab settings<\/p>\n

Outlet BC: pressure outlet, default radiation tab settings<\/p>\n

Using this setting, I am getting wall temperature more than 90 Deg. C. Also, radiation temperature is high.<\/p>\n

Moreover, I kept different settings but still results are wrong.<\/p>\n

Kindly help me in solving the problem.<\/p>\n

Thanks in advance.<\/p>\n

\n
\n
\n\"image.png\"
\n<\/a><\/p>\n","protected":false},"template":"","class_list":["post-48472","topic","type-topic","status-closed","hentry","topic-tag-ansys-fluent","topic-tag-do-radiation-model","topic-tag-solar-load"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["20695"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":["1?}2"],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0"],"_btv_view_count":["2964"],"_bbp_subscription":["76890"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["48472"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","181607"],"_bbp_voice_count":["2"],"_bbp_reply_count":["3"],"_bbp_last_reply_id":["129230"],"_bbp_last_active_id":["129230"],"_bbp_last_active_time":["2020-10-08 07:00:10"]},"test":"arpatil_31-2"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/48472","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\/48472\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=48472"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}