1 / 16

Adrian Bejan J. A. Jones Distinguished Professor Duke University

Constructal Theory of Flying, Running and Swimming. Adrian Bejan J. A. Jones Distinguished Professor Duke University. The generation of configuration is a physics phenomenon Natural flow configurations tree networks locomotion global circulation and climate The constructal law. W 2.

nevan
Télécharger la présentation

Adrian Bejan J. A. Jones Distinguished Professor Duke University

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Constructal Theory of Flying, Running and Swimming Adrian Bejan J. A. Jones Distinguished Professor Duke University

  2. The generation of configuration is a physics phenomenon Natural flow configurations tree networks locomotion global circulation and climate The constructal law

  3. W2 W1

  4. Vertical loss Horizontal loss M = body mass Lb = body length ~ H ra = air density rb = body density

  5. A. Bejan, Shape and Structure, from Engineering to Nature, Cambridge University Press, 2000.

  6. A. Bejan and S. Lorente, ASME Paper, IMECE2003-33158

  7. Vertical loss Horizontal loss

  8. Vertical loss Horizontal loss “Give me one firm spot on which to stand, and I will move the earth” (Archimedes, 287-212 B.C.)

  9. A. Bejan and J. H. Marden, J. Exp. Biol. 209 (2006) 238-248.

  10. A. H. Reis and A. Bejan, Int. J. Heat Mass Transfer49 (2006)

  11. Constructal law (1996): “For a flow system to persist in time (to survive) it must evolve in such a way that it provides easier and easier access to the currents that flow through it”. This new law of physics stands behind all phenomena of configuration generation: Darwin’s observations Machine evolution (“human + machine species”) River basin evolution, atmospheric circulation, climate, lightning, vascularization, vegetation, animals, turbulent flow, dendritic crystals, social organization, etc.

More Related