The Constructal Law of Generation of Configuration in Nature

Speaker: 
Adrian Bejan
Date of Seminar: 
Fri, 2007-02-02 12:00
Semester & Year: 
Spring 2007
Seminar Location: 
Hudson Hall Room 216
Seminar Contact(s): 
Elizabeth Irish eri@duke.edu or Justin Jaworski jwj@duke.edu
Special Instructions: 
Lunch and beverages will be served
Constructal theory is the view that the generation of flow configuration is a physics phenomenon that can be based on a physics principle (the constructal law): “For a finite-size flow system to persist in time (to survive) its configuration must evolve in such a way that it provides easier access to the currents that flow through it”. The law accounts for the configuration generation phenomenon across the board: turbulence, animal design, cracks in solids, dendritic solidification, selflubrication, earth climate, droplet impact configuration, etc. The examples selected for this lecture are the constructal prediction of river basin allometry, animal locomotion, the movement of goods and people (the geographic distribution of human settlements), the shape of Egyptian pyramids, and how the freedom to change the flow architecture leads to asymmetry and even greater performance. This lecture introduces a new paradigm that is universally applicable in natural sciences, engineering and social sciences.