What Is the View Factor Between Two Nested Cubes?

AI Thread Summary
The discussion centers on calculating the view factor between a 1m cube and a 2m cube, where the smaller cube is entirely within the larger one. The view factor is defined as the proportion of radiation from one surface that strikes another surface. It is suggested that since the smaller cube is completely enclosed, the view factor would be 1, indicating that all radiation from the smaller cube reaches the inner surface of the larger cube. However, it's noted that the outer surface of the smaller cube cannot 'see' itself, leading to the conclusion that the view factor is not simply 1. The participants seek confirmation on this understanding, highlighting the complexities of view factor calculations in nested geometries.
badgermanb
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1. A cube 1m on a side is located within a cube of 2m on a side. If the cubes do not touch, what is the view factor between the outer surface of the smaller cube and the inner surface of the larger cube?


2. View Factor = the proportion of all the radiation which leaves a surface "A" and strikes a surface "B".


3. Since the inner cube is "floating" within the larger cube, wouldn't the view factor just be 1? If the smaller cube is completely encapsulated by the larger one, all (100%) of its radiation would strike the inside surface of the larger cube.

Is this right? I would just like to confirm this, as I am relatively new at figuring this kind of thing out.

Thanks
 
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Well the outer surface of the 1m cube does not 'see' itself, so I think it would just be 1 as well.
 

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