Journal of Non-Equilibrium Thermodynamics最新文献_第4页

Comparison of some geometric frameworks for dissipative evolution in multiscale non-equilibrium thermodynamics 多尺度非平衡热力学耗散演化几何框架的比较

IF 6.6 3区工程技术

Journal of Non-Equilibrium Thermodynamics Pub Date : 2026-03-17 DOI: 10.1515/jnet-2025-0174

Miroslav Grmela, Michal Pavelka

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Rheological modeling with GENERIC and with the Onsager principle 采用GENERIC和Onsager原理进行流变学建模

IF 6.6 3区工程技术

Journal of Non-Equilibrium Thermodynamics Pub Date : 2026-03-07 DOI: 10.1515/jnet-2025-0125

Miroslav Grmela

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Nonequilibrium thermodynamics with constraints: constrained functional derivatives and their transformations 有约束的非平衡热力学：约束泛函导数及其变换

IF 6.6 3区工程技术

Journal of Non-Equilibrium Thermodynamics Pub Date : 2026-02-17 DOI: 10.1515/jnet-2025-0143

Brian J. Edwards, Antony N. Beris

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Dynamics of stochastic chains with harmonic and FPUT potentials 具有谐波和FPUT势的随机链动力学

IF 6.6 3区工程技术

Journal of Non-Equilibrium Thermodynamics Pub Date : 2026-02-16 DOI: 10.1515/jnet-2025-0150

Emilio N.M. Cirillo, Matteo Colangeli, Claudio Giberti, Lamberto Rondoni

{"title":"Dynamics of stochastic chains with harmonic and FPUT potentials","authors":"Emilio N.M. Cirillo, Matteo Colangeli, Claudio Giberti, Lamberto Rondoni","doi":"10.1515/jnet-2025-0150","DOIUrl":"https://doi.org/10.1515/jnet-2025-0150","url":null,"abstract":"Inspired by recent studies on deterministic oscillator models, we introduce a stochastic one-dimensional model for a chain of interacting particles. The model consists of N particles performing continuous-time random walks on the integer lattice <m:math xmlns:m=\"http://www.w3.org/1998/Math/MathML\" overflow=\"scroll\"> <m:mi mathvariant=\"double-struck\">Z</m:mi> </m:math> $mathbb{Z}$ with exponentially distributed waiting times. The particles are bound by confining forces to two particles that do not move, placed at positions x 0 and x N +1 , respectively, and they feel the presence of baths with given inverse temperatures: β L to the left, β B in the middle, and β R to the right. Each particle has an index and interacts with its nearest neighbors in index space through either a quadratic potential or a Fermi-Pasta-Ulam-Tsingou type coupling. This local interaction in index space can give rise to effective long-range interactions on the spatial lattice, depending on the instantaneous configuration. Particle hopping rates are governed either by the Metropolis rule or by a modified version that breaks detailed balance at the interfaces between regions with different baths. In both cases, the dynamics drive the system toward the minimization of an appropriate energy functional, even under non-uniform temperature profiles.","PeriodicalId":16428,"journal":{"name":"Journal of Non-Equilibrium Thermodynamics","volume":"10 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2026-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146204860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Liquid-vapor interface resistivities for non-ideal gases 非理想气体的液-气界面电阻率

IF 6.6 3区工程技术

Journal of Non-Equilibrium Thermodynamics Pub Date : 2026-01-29 DOI: 10.1515/jnet-2025-0104

Henning Struchtrup

引用次数: 0

Frontmatter Frontmatter

IF 6.6 3区工程技术

Journal of Non-Equilibrium Thermodynamics Pub Date : 2026-01-07 DOI: 10.1515/jnet-2026-frontmatter1

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Ecological performance analyses and multi-objective optimizations for thermal-Brownian-engine with external heat-transfer 带外传热的热布朗发动机生态性能分析及多目标优化

IF 6.6 3区工程技术

Journal of Non-Equilibrium Thermodynamics Pub Date : 2025-12-11 DOI: 10.1515/jnet-2025-0083

Congzheng Qi, Lingen Chen, Huijun Feng, Yanlin Ge, Xubing Chen

{"title":"Ecological performance analyses and multi-objective optimizations for thermal-Brownian-engine with external heat-transfer","authors":"Congzheng Qi, Lingen Chen, Huijun Feng, Yanlin Ge, Xubing Chen","doi":"10.1515/jnet-2025-0083","DOIUrl":"https://doi.org/10.1515/jnet-2025-0083","url":null,"abstract":"Based on finite-time-thermodynamics and thermal-Brownian-engine cycle with external heat transfers, expressions for ecological function and efficient ecological function are derived firstly herein. Two temperatures for hot and cold viscous mediums are solved by combining heat flow balance equations, and ecological performances are analyzed. Next, with thermal-conductance-ratio, barrier-height and external-load as optimization variables, 15 combinations including power, efficiency, ecological-function and efficient-ecological-function as optimization objectives, single- and multi-objective optimizations are conducted utilizing non-dominated sorting genetic algorithm-II (NSGA-II), and Pareto frontiers for different combinations are obtained. Finally, the optimal schemes for different multi-objective optimizations are determined using three decision-making methods. Results indicate that this engine can operate under maximal ecological function or efficient ecological function objectives. Ecological-function, efficient-ecological-function and multi-objective optimizations can achieve trade-offs between power and efficiency, and multi-objective optimizations provide more suitable solutions. For four-objective optimization, optimal scheme with Shannon-Entropy method is closer to ideal solution, and barrier height and external load corresponding to Pareto frontier are distributed uniformly within their ranges, while thermal conductance ratio is concentrated around 0.5. Adjusting barrier height and external load is an effective way to achieve coordinated optimization of these four objectives.","PeriodicalId":16428,"journal":{"name":"Journal of Non-Equilibrium Thermodynamics","volume":"6 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145731356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modeling and simulations of nonequilibrium bioheat transfer in biological tissue using FEM with experimental verifications 生物组织内非平衡传热的有限元模拟与实验验证

IF 6.6 3区工程技术

Journal of Non-Equilibrium Thermodynamics Pub Date : 2025-12-09 DOI: 10.1515/jnet-2025-0152

Areej Almuneef, Ibrahim Abbas

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On the identification of two internal tensorial variables and a heat transport equation with inertial, thermal viscosity and vorticity terms 关于两个内张量变量和一个含惯性、热粘度和涡量项的热传递方程的辨识

IF 6.6 3区工程技术

Journal of Non-Equilibrium Thermodynamics Pub Date : 2025-12-06 DOI: 10.1515/jnet-2024-0100

Liliana Restuccia, David Jou, Michal Pavelka

{"title":"On the identification of two internal tensorial variables and a heat transport equation with inertial, thermal viscosity and vorticity terms","authors":"Liliana Restuccia, David Jou, Michal Pavelka","doi":"10.1515/jnet-2024-0100","DOIUrl":"https://doi.org/10.1515/jnet-2024-0100","url":null,"abstract":"In a rigid crystal, phonons are quasiparticles that carry heat, and they can be seen at various levels of description like phonon kinetic theory, phonon hydrodynamics, Guyer–Krumhansl equation, or Fourier heat conduction. In a previous paper, we extended the Guyer–Krumhansl equation by adding two internal state variables, a symmetric tensor and an antisymmetric tensor. These internal variables express the viscous and vortical motion of phonons. In the present paper, we analyze the model by means of asymptotic expansion, and we find a geometric analogue of the model. While the zeroth-order expansion reduces the model to the Guyer–Krumhansl equation, the first-order expansion gives a more complicated heat flux evolution equation, of which the stability conditions of equilibrium solutions are studied. The geometric formulation of the model gives the heat flux as a functional of the entropy flux, in contrast to the usual setting of Extended Irreversible Thermodynamics, and also the two fluxes cease to be proportional via the temperature (in contrast to the Clausius formula for entropy flux).","PeriodicalId":16428,"journal":{"name":"Journal of Non-Equilibrium Thermodynamics","volume":"35 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145680052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Endoreversible description of photothermal Vuilleumier refrigeration machines 光热维鲁米耶制冷机的内可逆描述

IF 6.6 3区工程技术

Journal of Non-Equilibrium Thermodynamics Pub Date : 2025-11-12 DOI: 10.1515/jnet-2025-0094

Eduardo González-Mora, Ram Poudel, María Dolores Durán-García

{"title":"Endoreversible description of photothermal Vuilleumier refrigeration machines","authors":"Eduardo González-Mora, Ram Poudel, María Dolores Durán-García","doi":"10.1515/jnet-2025-0094","DOIUrl":"https://doi.org/10.1515/jnet-2025-0094","url":null,"abstract":"Sustainable cooling is critical for climate change mitigation and energy resilience, potentially reducing global greenhouse gas emissions while addressing rising demand for cooling. Solar refrigeration technologies offer alternatives to electricity-intensive refrigeration systems but remain underutilised in industrial applications where thermal energy is required for many manufacturing processes. Specifically, Vuilleumier refrigerators – heat-driven devices with mechanical simplicity – show unexplored potential when powered by concentrated solar energy, as no existing models integrate a solar concentrator with the refrigeration cycle irreversibilities. Here, we develop an endoreversible thermodynamic model of a solar-driven Vuilleumier refrigerator, coupling optical concentration, absorber design, and regeneration effect. Numerical analysis reveals that the coefficient of performance ( β ) exhibits concentration-dependent thresholds ( ξ > 0.18 at 273 K; ξ > 0.11 at 253 K), with asymptotic plateaus at β ≈ 9 and β ≈ 4 respectively. Normalised sensitivity analysis identifies regenerator effectiveness ( ɛ ) as the dominant parameter (12–16 times more influential), compared with the solar-specific parameters. These results resolve a critical gap in solar-thermal refrigeration by demonstrating that regenerator design – not concentrator scaling – limits maximum coefficient of performance. This work provides a thermodynamic blueprint delineating the fundamental performance boundaries of solar-Vuilleumier technology, governed by irreversibility constraints and asymptotic efficiency limits.","PeriodicalId":16428,"journal":{"name":"Journal of Non-Equilibrium Thermodynamics","volume":"17 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145491817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0