Effect of Nanostructure on Thermal Conductivity of Nanofluids
Joint Authors
Matsoukas, Themis
Lotfizadeh, Saba
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-10-11
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
The presence of colloidal particles is known to increase the thermal conductivity of base fluids.
The shape and structure of the solid particles are important in determining the magnitude of enhancement.
Spherical particles—the only shape for which analytic theories exist—produce the smallest enhancement.
Nonspherical shapes, including clusters formed by colloidal aggregation, provide substantially higher enhancements.
We conduct a numerical study of the thermal conductivity of nonspherical structures dispersed in a liquid at fixed volume fraction in order to identify structural features that promote the conduction of heat.
We find that elongated structures provide high enhancements, especially if they are long enough to create a solid network (colloidal gel).
Cross-linking further enhances thermal transport by directing heat in multiple directions.
The most efficient structure is the one formed by hollow spheres consisting of a solid shell and a core filled by the fluid.
In both dispersed and aggregated forms, hollow spheres provide enhancements that approach the theoretical limit set by Maxwell’s theory.
American Psychological Association (APA)
Lotfizadeh, Saba& Matsoukas, Themis. 2015. Effect of Nanostructure on Thermal Conductivity of Nanofluids. Journal of Nanomaterials،Vol. 2015, no. 2015, pp.1-7.
https://search.emarefa.net/detail/BIM-1069242
Modern Language Association (MLA)
Lotfizadeh, Saba& Matsoukas, Themis. Effect of Nanostructure on Thermal Conductivity of Nanofluids. Journal of Nanomaterials No. 2015 (2015), pp.1-7.
https://search.emarefa.net/detail/BIM-1069242
American Medical Association (AMA)
Lotfizadeh, Saba& Matsoukas, Themis. Effect of Nanostructure on Thermal Conductivity of Nanofluids. Journal of Nanomaterials. 2015. Vol. 2015, no. 2015, pp.1-7.
https://search.emarefa.net/detail/BIM-1069242
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1069242