Why humans build fires shaped the same way

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The clashing asymptotes define this behavior, and the method of intersecting the asymptotes18 pinpoints the architecture, the design. Photographs taken by Adrian Bejan.This article, published in the Nature Scientific Report, explain “why humans unwittingly build fires that look the same: edifices of fuel, as tall as they are wide. The pile of fuel is permeable, air invades it by natural convection and drives the combustion.“. The article “show that the hottest pile of burning fuel occurs when the height of the pile is roughly the same as its base diameter. Future studies may address the shape effect of wind, material type, and packing. Key is why humans of all eras have been relying on this design of fire “unwittingly”. The reason is that the heat flow from fire facilitates the movement and spreading of human mass on the globe“.

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