Upload
zahir-horne
View
49
Download
6
Tags:
Embed Size (px)
DESCRIPTION
Adrian Bejan, 1996. Constructal Theory. "For a finite-size system to persist in time (to live), it must evolve in such a way that it provides easier access to the imposed currents that flow through it." -Bejan, 1996-. Constructal Law. Constructal Theory. Flow systems under size-constraint - PowerPoint PPT Presentation
Citation preview
Constructal Theory
Adrian Bejan, 1996
Constructal Law
"For a finite-size system to persist in time (to live), it must evolve in such a way that it
provides easier access to the imposed currents that flow through it."
-Bejan, 1996-
Constructal Theory
Flow systems under size-constraint Tree architecture predicted
Tree/Vascular/Dendritic
Applications
River delta
Tree (and roots)
Vascular
3D microvascular
Heat dissipation under skin
Airport
Dendritic
Chip cooling
Towards chip cooling
Heat transfer (cooling)
Combustor
Heat exchanger design
Cross flow heat exchanger
From principle to shape
Principles
Every system will remain imperfect The best that can be done is to optimally
distribute imperfections Imperfections distribute to the smallest
scale of system This optimal distribution will result in the
geometry/shape of the system The perfect form is the least imperfect
form possible.
Analogies