Draft:Constructal Law


The Constructal Law, proposed in 1996 by Adrian Bejan, a thermal engineer at Duke University in the United States, is a physical law that pertains to the design and evolution of natural phenomena in thermodynamics.[1]

The term 'constructal' is coined by Bejan from the Latin verb construere, meaning 'to construct,' and is described as a counterpart to the word 'fractal,' which derives from the Latin-based word for 'beraking things.' The constructal law asserts that the configuration (design) of matter filling non-equilibrium systems tends to evolve in a way that facilitates the flow of energy and material passing through it. This law declares a universal tendency for design changes (evolution) in non-equilibrium systems as a physical law. The constructal law stands as a new, independent physical law in thermodynamics, and it can not be derived from other physical laws. It allows for theoretical predictions and explanations of natural designs and evolutional phenomena, such as Horton's laws of river structures, scaling laws of animal lifespan and movement speed, the structure of the atmosphere, the formation of turbulent vortices and spray flows, power laws of urban scale and frequency, and Moore's Law.[2][3]

  1. ^ Bejan, A. (1997) Constructal-theory network of conducting paths for cooling a heat generating volume. International Journal of Heat and Mass Transfer, 40(4), 799-811
  2. ^ Bejan, A., & Lorente, S. (2013) Constructal law of design and evolution: Physics, biilogy, technology, and society. Journal of Applied Physics, 113, 151301
  3. ^ Bejan, A. (2016) Life and evolution as physics. Communicative & Integrative Biology, 9(3), e1172159