Articles with "entropy production" as a keyword



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Sensitivity analysis of entropy production in Al2O3/H2O nanofluid through converging pipe

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Published in 2019 at "Journal of Thermal Analysis and Calorimetry"

DOI: 10.1007/s10973-019-09163-y

Abstract: This work numerically investigated entropy production rate in Al 2 O 3 /H 2 O nanofluid flowing through a convergent pipe in laminar flow regime using computational fluid dynamic and response surface methodology. A parametric… read more here.

Keywords: production; entropy production; number; sensitivity analysis ... See more keywords
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Thermal evolution of Earth with magnesium precipitation in the core

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Published in 2017 at "Earth and Planetary Science Letters"

DOI: 10.1016/j.epsl.2016.10.057

Abstract: Vigorous convection in Earth's core powers our global magnetic field, which has survived for over three billion years. In this study, we calculate the rate of entropy production available to drive the dynamo throughout geologic… read more here.

Keywords: precipitation; entropy production; evolution earth; earth ... See more keywords
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Entropy production during natural convection of hybrid nanofluid in an annular passage between horizontal confocal elliptic cylinders

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Published in 2020 at "International Journal of Mechanical Sciences"

DOI: 10.1016/j.ijmecsci.2019.105378

Abstract: Abstract A numerical analysis on entropy production due to natural convection in an annular passage between horizontal confocal elliptic cylinders is studied. The Al2O3-Cu/water hybrid nanofluid is using as a test fluid. The flow by… read more here.

Keywords: entropy; natural convection; entropy production; annular passage ... See more keywords
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Effects of active fluctuations on energetics of a colloidal particle: Superdiffusion, dissipation and entropy production

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Published in 2019 at "Physica A: Statistical Mechanics and its Applications"

DOI: 10.1016/j.physa.2019.121574

Abstract: Abstract We consider a colloidal particle immersed in an active bath and derive a Smoluchowski equation that governs the dynamics of the colloidal particle. We address this as active Smoluchowski equation. Our analysis based on… read more here.

Keywords: colloidal particle; dissipation; entropy production;
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Investigation of Entropy Production with Thermal Analysis under Soret and Dufour Effects in MHD Flow between Convergent and Divergent Channels

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Published in 2023 at "ACS Omega"

DOI: 10.1021/acsomega.2c05937

Abstract: Hydromagnetic flow and heat transport have sustainable importance in conventional system design along with high-performance thermal equipment and geothermal energy structures. The current computational study investigates the energy transport and entropy production due to the… read more here.

Keywords: convergent divergent; entropy; flow; entropy production ... See more keywords
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Estimating time-dependent entropy production from non-equilibrium trajectories

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Published in 2022 at "Communications Physics"

DOI: 10.1038/s42005-021-00787-x

Abstract: The rate of entropy production provides a useful quantitative measure of a non-equilibrium system and estimating it directly from time-series data from experiments is highly desirable. Several approaches have been considered for stationary dynamics, some… read more here.

Keywords: production; entropy production; production rate; time ... See more keywords
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Stochastic approach to entropy production in chemical chaos.

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Published in 2020 at "Chaos"

DOI: 10.1063/5.0025350

Abstract: Methods are presented to evaluate the entropy production rate in stochastic reactive systems. These methods are shown to be consistent with known results from nonequilibrium chemical thermodynamics. Moreover, it is proved that the time average… read more here.

Keywords: production; chaos stochastic; chemical chaos; entropy production ... See more keywords
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Chiral symmetry breaking and entropy production in Dean vortices

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Published in 2023 at "Physics of Fluids"

DOI: 10.1063/5.0142665

Abstract: In toroidal pipes, the secondary flow in cross section is a mirror symmetric pair of counter-rotating axially oriented Dean vortices. This mirror symmetry is broken in helical pipes. We investigate in detail the mirror symmetry… read more here.

Keywords: symmetry breaking; dean vortices; entropy production;
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Time-reversal symmetry violations and entropy production in field theories of polar active matter

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Published in 2020 at "New Journal of Physics"

DOI: 10.1088/1367-2630/abcd66

Abstract: We investigate the steady-state entropy production rate (EPR) in the Hydrodynamic Vicsek Model (HVM) and Diffusive Flocking Model (DFM). Both models display a transition from an isotropic gas to a polar liquid (flocking) phase, in… read more here.

Keywords: reversal symmetry; limit; time; entropy production ... See more keywords
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Fluctuations of apparent entropy production in networks with hidden slow degrees of freedom

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Published in 2018 at "Journal of Statistical Mechanics: Theory and Experiment"

DOI: 10.1088/1742-5468/aaa78b

Abstract: The fluctuation theorem for entropy production is a remarkable symmetry of the distribution of produced entropy that holds universally in non-equilibrium steady states with Markovian dynamics. However, in systems with slow degrees of freedom that… read more here.

Keywords: fluctuation theorem; apparent entropy; production; entropy production ... See more keywords
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Compatibility of linear-response theory with the second law of thermodynamics and the emergence of negative entropy production rates

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Published in 2020 at "Journal of Statistical Mechanics: Theory and Experiment"

DOI: 10.1088/1742-5468/ab54ba

Abstract: The reliability of physical theories depends on whether they agree with well established physical laws. In this work, we address the compatibility of the Hamiltonian formulation of linear-response theory with the Second Law of Thermodynamics.… read more here.

Keywords: entropy production; thermodynamics; second law; linear response ... See more keywords