Submit to Entropy Review for Entropy Propose a Special Issue

Journal Browser

► Journal Browser

Entropy Generation and Heat Transfer II

Special Issue Editors
Special Issue Information
Keywords
Published Papers

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

Deadline for manuscript submissions: closed (15 October 2020) | Viewed by 12412

Share This Special Issue

Special Issue Editor

Prof. Dr. José Miguel Mateos Roco

E-Mail Website
Guest Editor

Department of Applied Physics, Faculty of Science, University of Salamanca, 37008 Salamanca, Spain
Interests: thermodynamics; statistical physics; heat engines
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

As it has been shown by the numerous high-quality works published in the previous Issue, "Entropy Generation and Heat Transfer”, entropy generation analysis is a main concern in the heat transfer processes, taking place in different kinds of thermodynamic systems and devices. This fact has encouraged us to propose a new Special Issue with the purpose of enhancing the panoramic view of the research in this field that has previously been compiled, and to deepen the results that have already been presented.

To fulfill this goal, theoretical concerns related to models allowing for evaluating and minimizing entropy generation are welcome. Also, the application of the above to real heat devices in order to improve the efficiency of the processes taking place in them will have special interest.

This Issue is aimed at showing a wide scope of the matter. Thus, the results for the systems and devices of a different nature and scales may be submitted here. Novel research focused on processes from quantum to macroscopic, passing through mesoscopic levels, will have a common place in this new release.

Prof. José Miguel Mateos Roco
Guest Editor

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

Heat devices
Mesoscopic energy converters
Quantum heat devices
Finite time thermodynamics
Irreversible thermodynamics
Energy dissipation
Finite size constraints
Finite time constraints
Quantum thermodynamics
Thermodynamic optimization
Entropy generation minimization
Stochastic thermodynamics

Published Papers (5 papers)

Download All Papers

Research

16 pages, 310 KiB

Open AccessArticle

Modification of the Electron Entropy Production in a Plasma

by Juan F. García-Camacho, Gonzalo Ares de Parga, Karen Arango-Reyes, Encarnación Salinas-Hernández and Samuel Domínguez-Hernández

Entropy 2020, 22(9), 935; https://0-doi-org.brum.beds.ac.uk/10.3390/e22090935 - 26 Aug 2020

Viewed by 1554

Abstract

A modified expression of the electron entropy production in a plasma is deduced by means of the Kelly equations of state instead of the ideal gas equations of state. From the Debye–Hückel model which considers the interaction between the charges, such equations of state are derived for a plasma and the entropy is deduced. The technique to obtain the modified entropy production is based on usual developments but including the modified equations of state giving the regular result plus some extra terms. We derive an expression of the modified entropy production in terms of the tensorial Hermitian moments

h_{r_{1} \dots r_{m}}^{(m)}

by means of the irreducible tensorial Hermite polynomials. Full article

(This article belongs to the Special Issue Entropy Generation and Heat Transfer II)

26 pages, 12560 KiB

Open AccessArticle

Hall Effect on Radiative Casson Fluid Flow with Chemical Reaction on a Rotating Cone through Entropy Optimization

by Wejdan Deebani, Asifa Tassaddiq, Zahir Shah, Abdullah Dawar and Farhad Ali

Entropy 2020, 22(4), 480; https://0-doi-org.brum.beds.ac.uk/10.3390/e22040480 - 22 Apr 2020

Cited by 26 | Viewed by 2813

Abstract

Magnetohydrodynamic (MHD) flow with Hall current has numerous applications in industrial areas such as Hall current accelerators, MHD power generators, planetary dynamics, Hall current sensors, etc. In this paper, the analysis of an unsteady MHD Casson fluid with chemical reaction over a rotating cone is presented. The impacts of Hall current, joule heating, thermal radiation, and viscous dissipation are analyzed. Entropy optimization is also considered in the present analysis. The system of coupled equations is tackled with homotopy analysis method (HAM). The convergence of HAM is also shown through figures. Deviations in the flow due to dimensionless parameters are shown graphically. Similarly, the variation in skin friction, Nusselt number, and Sherwood number are deliberated through Tables. A justification of the current consequences is presented. Full article

(This article belongs to the Special Issue Entropy Generation and Heat Transfer II)

► Show Figures

Figure 1

21 pages, 5232 KiB

Open AccessArticle

Effects of Chemical Species and Nonlinear Thermal Radiation with 3D Maxwell Nanofluid Flow with Double Stratification—An Analytical Solution

by Iskander Tlili, Sania Naseer, Muhammad Ramzan, Seifedine Kadry and Yunyoung Nam

Entropy 2020, 22(4), 453; https://0-doi-org.brum.beds.ac.uk/10.3390/e22040453 - 16 Apr 2020

Cited by 39 | Viewed by 2983

Abstract

This article elucidates the magnetohydrodynamic 3D Maxwell nanofluid flow with heat absorption/generation effects. The impact of the nonlinear thermal radiation with a chemical reaction is also an added feature of the presented model. The phenomenon of flow is supported by thermal and concentration stratified boundary conditions. The boundary layer set of non-linear PDEs (partial differential equation) are converted into ODEs (ordinary differential equation) with high nonlinearity via suitable transformations. The homotopy analysis technique is engaged to regulate the mathematical analysis. The obtained results for concentration, temperature and velocity profiles are analyzed graphically for various admissible parameters. A comparative statement with an already published article in limiting case is also added to corroborate our presented model. An excellent harmony in this regard is obtained. The impact of the Nusselt number for distinct parameters is also explored and discussed. It is found that the impacts of Brownian motion on the concentration and temperature distributions are opposite. It is also comprehended that the thermally stratified parameter decreases the fluid temperature. Full article

(This article belongs to the Special Issue Entropy Generation and Heat Transfer II)

► Show Figures

Figure 1

16 pages, 7457 KiB

Open AccessArticle

Entropy Generation and Heat Transfer in Drilling Nanoliquids with Clay Nanoparticles

by Kottakkaran Sooppy Nisar, Dolat Khan, Arshad Khan, Waqar A Khan, Ilyas Khan and Abdullah Mohammed Aldawsari

Entropy 2019, 21(12), 1226; https://0-doi-org.brum.beds.ac.uk/10.3390/e21121226 - 16 Dec 2019

Cited by 13 | Viewed by 2451

Abstract

Different types of nanomaterials are used these days. Among them, clay nanoparticles are the one of the most applicable and affordable options. Specifically, clay nanoparticles have numerous applications in the field of medical science for cleaning blood, water, etc. Based on this motivation, this article aimed to study entropy generation in different drilling nanoliquids with clay nanoparticles. Entropy generation and natural convection usually occur during the drilling process of oil and gas from rocks and land, wherein clay nanoparticles may be included in the drilling fluids. In this work, water, engine oil and kerosene oil were taken as base fluids. A comparative analysis was completed for these three types of base fluid, each containing clay nanoparticles. Numerical values of viscosity and effective thermal conductivity were computed for the nanofluids based on the Maxwell–Garnett (MG) and Brinkman models. The closed-form solution of the formulated problem (in terms of partial differential equations with defined initial and boundary conditions) was determined using the Laplace transform technique. Numerical facts for temperature and velocity fields were used to calculate the Bejan number and local entropy generation. These solutions are uncommon in the literature and therefore this work can assist in the exact solutions of a number of problems of technical relevance to this type. Herein, the effect of different parameters on entropy generation and Bejan number minimization and maximization are displayed through graphs. Full article

(This article belongs to the Special Issue Entropy Generation and Heat Transfer II)

► Show Figures

Figure 1

13 pages, 260 KiB

Open AccessArticle

Causal Heat Conduction Contravening the Fading Memory Paradigm

by Luis Herrera

Entropy 2019, 21(10), 950; https://0-doi-org.brum.beds.ac.uk/10.3390/e21100950 - 28 Sep 2019

Cited by 7 | Viewed by 2117

Abstract

We propose a causal heat conduction model based on a heat kernel violating the fading memory paradigm. The resulting transport equation produces an equation for the temperature. The model is applied to the discussion of two important issues such as the thermohaline convection and the nuclear burning (in)stability. In both cases, the behaviour of the system appears to be strongly dependent on the transport equation assumed, bringing out the effects of our specific kernel on the final description of these problems. A possible relativistic version of the obtained transport equation is presented. Full article

(This article belongs to the Special Issue Entropy Generation and Heat Transfer II)

Journal Menu

Journal Browser

Entropy Generation and Heat Transfer II

Share This Special Issue

Special Issue Editor

Special Issue Information

Keywords

Published Papers (5 papers)

Research

Further Information

Guidelines

MDPI Initiatives

Follow MDPI