Why humans build fires shaped the same way.

Journal Article

Here we see 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. I 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.

Full Text

Duke Authors

Cited Authors

  • Bejan, A

Published Date

  • January 2015

Published In

Volume / Issue

  • 5 /

Start / End Page

  • 11270 -

PubMed ID

  • 26053318

Electronic International Standard Serial Number (EISSN)

  • 2045-2322

International Standard Serial Number (ISSN)

  • 2045-2322

Digital Object Identifier (DOI)

  • 10.1038/srep11270

Language

  • eng