Radiation S2S in Ansys Mechanical
Hi,
is it possible to assign radiation to both sided of the shell using Enclosure Type=Perfect? In GUI I can see only "Top" and "Bottom".
Hi,
is it possible to assign radiation to both sided of the shell using Enclosure Type=Perfect? In GUI I can see only "Top" and "Bottom".
Comments
Hi @tdsom,
For perfect enclosure the surfaces must form an enclosed space so that the sum of view factors equals unity. You can select both Top and Bottom faces to define the radiation:
Regards,
Ashish Khemka
Hi @akhemka ,
thank you for your help! I figured out that in Ansys 2019R2 there were only "Top" na "Bottom" options in GUI for Perfect enclosure. I've just installed 2020 and saw than in this version, "Both" option is also available.
Maybe it will be helpful for somebody: In 2019 I used APDL commands to enforce radiation on both shell faces (for perfect enclosure)
cmsel,s,Selection_Surface1 !Named selection on body named "Selection_Surface1"
SFE,all,1,RDSF,1,0.6 !Face 1 of SHELL 131, emissivity 0.6
SFE,all,1,RDSF,2,1 !Face 1 of SHELL 131, enclosure 1
SFE,all,2,RDSF,1,0.6 !Face 2 of SHELL 131, emissivity 0.6
SFE,all,2,RDSF,2,1 !Face 2 of SHELL 131, enclosure 1
nsel,all
allsel
rsurf
How do you set the enclosure type to perfect instead of open?