Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

On the definition of energy in general electromagnetic media

On the definition of energy in general electromagnetic media Purpose – Proposes to posit a clear definition of the energy stored in general electromagnetic media. Design/methodology/approach – A general setting of thermodynamics using differential geometry is used and it is shown how the Poynting identity fits in. Findings – A general method of defining the energy storage and dissipation in a general media is stated. Research limitations/implications – It appears that the definition of the energy stored in a dispersive media is not a state variable and depends on the history of the field variation. Practical implications – If an electromagnetic model has to be coupled to a mechanical or thermal one, the associated forces and/or heat dissipations may not be clearly defined if one merely knows the electromagnetic constitutive relations. Originality/value – It proposes a very general setting for the thermodynamic of electrodynamic media. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering Emerald Publishing

Loading next page...
 
/lp/emerald-publishing/on-the-definition-of-energy-in-general-electromagnetic-media-iOLutkjf1d

References (8)

Publisher
Emerald Publishing
Copyright
Copyright © 2006 Emerald Group Publishing Limited. All rights reserved.
ISSN
0332-1649
DOI
10.1108/03321640610634326
Publisher site
See Article on Publisher Site

Abstract

Purpose – Proposes to posit a clear definition of the energy stored in general electromagnetic media. Design/methodology/approach – A general setting of thermodynamics using differential geometry is used and it is shown how the Poynting identity fits in. Findings – A general method of defining the energy storage and dissipation in a general media is stated. Research limitations/implications – It appears that the definition of the energy stored in a dispersive media is not a state variable and depends on the history of the field variation. Practical implications – If an electromagnetic model has to be coupled to a mechanical or thermal one, the associated forces and/or heat dissipations may not be clearly defined if one merely knows the electromagnetic constitutive relations. Originality/value – It proposes a very general setting for the thermodynamic of electrodynamic media.

Journal

COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic EngineeringEmerald Publishing

Published: Jan 1, 2006

Keywords: Electromagnetism; Thermodynamics; Differential geometry

There are no references for this article.