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Entropy
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Thermodynamics of Materials
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Thermodynamics of Materials

A special issue of Entropy (ISSN 1099-4300). This special issue belongs to the section "Thermodynamics".

Deadline for manuscript submissions: closed (30 April 2020) | Viewed by 4307

Special Issue Editors

Dr. V. María Barragán

E-Mail Website
Guest Editor
Department of Structure of Matter, Thermal Physics and Electronics, Faculty of Physics, Complutense University of Madrid, Plaza de Ciencias, 1, 28040 Madrid, Spain
Interests: non-equilibrium thermodynamics; membrane transport processes; ion-exchange membranes; energy conversion
Special Issues, Collections and Topics in MDPI journals
Prof. Juan P.G. Villaluenga

E-Mail Website
Guest Editor
Department of Structure of Matter, Thermal Physics and Electronics, Faculty of Physics, Complutense University of Madrid, Plaza de Ciencias, 1, 28040 Madrid, Spain
Interests: non-equilibrium thermodynamics; complex systems; biophysics

Special Issue Information

Dear Colleagues,

The study of material properties is relevant in many different fields, such as energy storage and generation, separation processes, biophysical systems, fluid dynamics, water cleaning, atmospheric chemistry, etc. Thermodynamics provides an approach to study all classes of materials. It´s of immense interest for understanding the behavior of material systems from both a fundamental and applied point of view, covering equilibrium and non-equilibrium aspects.

The hope of the Special Issue is to bring together contributors involving the applicability of thermodynamics to the study and description of materials from different points of view. We invite contributions to illustrate this wide utility of thermodynamics.

Prof. V. María Barragán
Prof. Juan P.G. Villaluenga
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Entropy is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • energy
  • interfaces
  • solution properties
  • thermal and mechanics properties
  • porous materials
  • non-equilibrium systems
  • transport and rate processes
  • irreversible thermodynamics
  • phase-transitions
  • electrochemistry
  • biophysical systems

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Published Papers (2 papers)

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22 pages, 357 KiB  
Article
Ordered Rate Constitutive Theories for Non-Classical Thermofluids Based on Convected Time Derivatives of the Strain and Higher Order Rotation Rate Tensors Using Entropy Inequality
by Karan S. Surana and Stephen W. Long
Entropy 2020, 22(4), 443; https://doi.org/10.3390/e22040443 - 14 Apr 2020
Viewed by 1768
Abstract
This paper considers non-classical continuum theory for thermoviscous fluids without memory incorporating internal rotation rates resulting from the antisymmetric part of the velocity gradient tensor to derive ordered rate constitutive theories for the Cauchy stress and the Cauchy moment tensor based on entropy [...] Read more.
This paper considers non-classical continuum theory for thermoviscous fluids without memory incorporating internal rotation rates resulting from the antisymmetric part of the velocity gradient tensor to derive ordered rate constitutive theories for the Cauchy stress and the Cauchy moment tensor based on entropy inequality and representation theorem. Using the generalization of the conjugate pairs in the entropy inequality, the ordered rate constitutive theory for Cauchy stress tensor considers convected time derivatives of the Green’s strain tensor (or Almansi strain tensor) of up to orders n ε as its argument tensors and the ordered rate constitutive theory for the Cauchy moment tensor considers convected time derivatives of the symmetric part of the rotation gradient tensor up to orders n Θ . While the convected time derivatives of the strain tensors are well known the convected time derivatives of higher orders of the symmetric part of the rotation gradient tensor need to be derived and are presented in this paper. Complete and general constitutive theories based on integrity using conjugate pairs in the entropy inequality and the generalization of the argument tensors of the constitutive variables and the representation theorem are derived and the material coefficients are established. It is shown that for the type of non-classical thermofluids considered in this paper the dissipation mechanism is an ordered rate mechanism due to convected time derivatives of the strain tensor as well as the convected time derivatives of the symmetric part of the rotation gradient tensor. The derivations of the constitutive theories presented in the paper is basis independent but can be made basis specific depending upon the choice of the specific basis for the constitutive variables and the argument tensors. Simplified linear theories are also presented as subset of the general constitutive theories and are compared with published works. Full article
(This article belongs to the Special Issue Thermodynamics of Materials)
14 pages, 3049 KiB  
Article
Electro-Osmotic Behavior of Polymeric Cation-Exchange Membranes in Ethanol-Water Solutions
by V. María Barragán, Juan P. G. Villaluenga, Víctor Morales-Villarejo and M. Amparo Izquierdo-Gil
Entropy 2020, 22(6), 692; https://doi.org/10.3390/e22060692 - 20 Jun 2020
Viewed by 2150
Abstract
The aim of this work is to apply linear non-equilibrium thermodynamics to study the electrokinetic properties of three cation-exchange membranes of different structures in ethanol-water electrolyte solutions. To this end, liquid uptake and electro-osmotic permeability were estimated with potassium chloride ethanol-water solutions with [...] Read more.
The aim of this work is to apply linear non-equilibrium thermodynamics to study the electrokinetic properties of three cation-exchange membranes of different structures in ethanol-water electrolyte solutions. To this end, liquid uptake and electro-osmotic permeability were estimated with potassium chloride ethanol-water solutions with different ethanol proportions as solvent. Current–voltage curves were also measured for each membrane system to estimate the energy dissipation due to the Joule effect. Considering the Onsager reciprocity relations, the streaming potential coefficient was discussed in terms of ethanol content of the solutions and the membrane structure. The results showed that more porous heterogeneous membrane presented lower values of liquid uptake and streaming potential coefficient with increasing ethanol content. Denser homogeneous membrane showed higher values for both, solvent uptake and streaming coefficient for intermediate content of ethanol. Full article
(This article belongs to the Special Issue Thermodynamics of Materials)
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