@Jezibaba I recall a paper that studied this which concluded that the bees followed a simple set of rules to build their honeycombs. I don't remember the rule but it was something like always split the angle of the wall. This results in a regular hexagon pattern normally.

So, I hate to say this, but maybe don't give the bees more intelligence than they have. Rather than taking air flow into account maybe the fan was the limiting factor that the bees built around to make this pattern.