Need help in calculating view factor in radiation

[pranavladkat]

Hi,

I need help in calculating the view factor F2-2 in the geometry that attached below.

I tried to use the crossed string method for calculating the view factors but I'm not sure if its right.

can anybody give a hint how do I find the view factor F2-2?

Thanks,
Pranav

 

[pranavladkat]

Anyways, I found the answer after trying for some more time!