 |
| Titel |
Constructal theory of pattern formation |
| VerfasserIn |
A. Bejan |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1027-5606
|
| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 11, no. 2 ; Nr. 11, no. 2 (2007-01-17), S.753-768 |
| Datensatznummer |
250009214
|
| Publikation (Nr.) |
 copernicus.org/hess-11-753-2007.pdf |
|
|
|
|
|
| Zusammenfassung |
| This review article shows that the occurrence of macroscopic flow
configuration is a universal natural phenomenon that can be explained and
predicted on the basis of a principle of physics (the constructal law):
"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". The examples given in this article come from natural inanimate
flow systems with configuration: duct cross-sections, open channel
cross-sections, tree-shaped flow architectures, and turbulent flow structure
(e.g., eddies, laminar lengths before transition). Other examples that are
treated in the literature, and which support the constructal law, are the
wedge-shape of turbulent shear layers, jets and plumes, the frequency of
vortex shedding, Bénard convection in fluids and fluid-saturated porous
media, dendritic solidification, the coalescence of solid parcels suspended
in a flow, global atmospheric and oceanic circulation and climate, and
virtually all architectural features of animal design. The constructal law
stresses the importance of reserving a place for pure theory in research,
and for constantly searching for new physics – new summarizing principles that
are general, hence useful. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|