Inscrição na biblioteca: Guest
Portal Digital Begell Biblioteca digital da Begell eBooks Diários Referências e Anais Coleções de pesquisa
Journal of Porous Media
Fator do impacto: 1.752 FI de cinco anos: 1.487 SJR: 0.43 SNIP: 0.762 CiteScore™: 2.3

ISSN Imprimir: 1091-028X
ISSN On-line: 1934-0508

Volumes:
Volume 24, 2021 Volume 23, 2020 Volume 22, 2019 Volume 21, 2018 Volume 20, 2017 Volume 19, 2016 Volume 18, 2015 Volume 17, 2014 Volume 16, 2013 Volume 15, 2012 Volume 14, 2011 Volume 13, 2010 Volume 12, 2009 Volume 11, 2008 Volume 10, 2007 Volume 9, 2006 Volume 8, 2005 Volume 7, 2004 Volume 6, 2003 Volume 5, 2002 Volume 4, 2001 Volume 3, 2000 Volume 2, 1999 Volume 1, 1998

Journal of Porous Media

DOI: 10.1615/JPorMedia.v12.i1.10
pages 1-18

Vascularized Smart Materials: Designed Porous Media for Self-Healing and Self-Cooling

Sylvie Lorente
Villanova University
Adrian Bejan
Department of Mechanical Engineering and Materials Science, Duke University, Box 90300, Durham, NC 27708-0300, USA

RESUMO

Constructal theory regards the generation of flow configuration as a natural (physics) phenomenon, and attributes this phenomenon to a physics principle (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.” Special among the engineered flow architectures derived from the constructal law are the tree-shaped (dendritic) designs. They are invading technological domains in which they were not used previously (manufacturing, electronics cooling, fuel cells). In this paper we report a fundamental study of how to vascularize a volume so that fluid flow and function (e.g., cooling, sensing, maintenance, repair, healing) reaches every point of the material. The examples are architectures that deliver healing fluid to all the crack sites that may occur randomly through the material. In one concept, a grid of interconnected channels is built into the material, and is filled with pressurized healing fluid. It is shown that the optimization of the ratio of channel diameters cuts in half the time of fluid delivery to the crack. In the second concept, one stream flows steadily through the material and bathes it volumetrically. The steam enters through one point, distributes itself as a river delta, reconstitutes itself as a river basin, and exits through one point. In the third, the solid body is vascularized with trees that alternate with upside-down trees. The flow through all the trees is in one direction, from one side of the body to the other. It is shown that the choice of the tree-tree configuration has a decisive impact on the global performance of the vascularized composite.


Articles with similar content:

Recent Progress in Dendrimer-Based Nanocarriers
Critical Reviews™ in Therapeutic Drug Carrier Systems, Vol.23, 2006, issue 6
Fakhrul Ahsan, Amit Rawat, Shuhua Bai, Chandan Thomas
Biomaterials, Fibrosis, and the Use of Drug Delivery Systems in Future Antifibrotic Strategies
Critical Reviews™ in Biomedical Engineering, Vol.37, 2009, issue 3
Ryan J. Love, Kim S. Jones
A MODEL FOR COMPOSITE BRICKWORK-LIKE MATERIALS BASED ON DISCRETE ELEMENT PROCEDURE: SENSITIVITY TO DIFFERENT STAGGERED TIERS
Composites: Mechanics, Computations, Applications: An International Journal, Vol.3, 2012, issue 1
Antonella Cecchi
EFFECT OF HYDRODYNAMIC BOUNDARY LAYER STRUCTURE ON THE PERFORMANCE OF A SWIRL FLOW MICROCHANNEL HEAT SINK FOR HIGH HEAT FLUX APPLICATIONS
Second Thermal and Fluids Engineering Conference, Vol.31, 2017, issue
Williams Calderon-Munoz, Benjamin Herrmann-Priesnitz
NUMERICAL SIMULATION OF PROTECTION FROM HIGH-VELOCITY ELONGATED PROJECTILES
Composites: Mechanics, Computations, Applications: An International Journal, Vol.8, 2017, issue 2
S. V. Pashkov, A. V. Gerasimov