Results 31 to 40 of about 142,106 (279)

Generalized Thermodynamic Optimization for Iron and Steel Production Processes: Theoretical Exploration and Application Cases

open access: yesEntropy, 2016
Combining modern thermodynamics theory branches, including finite time thermodynamics or entropy generation minimization, constructal theory and entransy theory, with metallurgical process engineering, this paper provides a new exploration on generalized
Lingen Chen, Huijun Feng, Zhihui Xie
doaj   +1 more source

Discretization of continuum physics – a comparison of numerical methods from a physical point of view; pp. 145–154 [PDF]

open access: yesProceedings of the Estonian Academy of Sciences, 2008
For numerical calculations in continuum physics partial differential equations and the space-time are discretized. This can be done in different ways. Common approaches are finite difference methods and finite element methods, more rarely finite volume ...
Heiko Herrmann
doaj   +1 more source

Quantum Thermodynamics with Degenerate Eigenstate Coherences

open access: yesEntropy, 2016
We establish quantum thermodynamics for open quantum systems weakly coupled to their reservoirs when the system exhibits degeneracies. The first and second law of thermodynamics are derived, as well as a finite-time fluctuation theorem for mechanical ...
Gregory Bulnes Cuetara   +2 more
doaj   +1 more source

Thermodynamics and fluctuations in finite-time quantum heat engines under reservoir squeezing

open access: yesPhysical Review Research, 2023
We investigate the thermodynamics and fluctuations of a finite-time quantum Otto engine alter- natively driven by a hot-squeezed and a cold thermal reservoir.
Yang Xiao   +6 more
doaj   +1 more source

Finite time thermodynamics analysis and research of pulsating heat pipe cold storage device

open access: yesEnergy Storage and Saving, 2022
Phase change energy storage technology can effectively solve the energy mismatch in space and time. There are many disadvantages of phase change materials (PCMs), such as high supercooling, phase separation and poor heat transfer performance.
Xiaofeng Xu, Xuelai Zhang
doaj   +1 more source

Numerical tests of the electroweak phase transition and thermodynamics of the electroweak plasma [PDF]

open access: yes, 1996
The finite temperature phase transition in the SU(2) Higgs model at a Higgs boson mass $M_H \simeq 34$ GeV is studied in numerical simulations on four-dimensional lattices with time-like extensions up to $L_t=5$.
A. Jaster   +34 more
core   +2 more sources

Finite-time Landauer principle beyond weak coupling [PDF]

open access: yesQuantum, 2023
Landauer's principle gives a fundamental limit to the thermodynamic cost of erasing information. Its saturation requires a reversible isothermal process, and hence infinite time.
Alberto Rolandi, Martí Perarnau-Llobet
doaj   +1 more source

Finite times to equipartition in the thermodynamic limit [PDF]

open access: yesPhysical Review E, 1999
Plain TeX, 5 `eps' figures, submitted to Phys.
De Luca J., Lichtenberg A. J., Ruffo S.
openaire   +4 more sources

Finite-time generalization of the thermodynamic uncertainty relation [PDF]

open access: yesPhysical Review E, 2017
7 pages, 4 ...
Pietzonka, Patrick   +2 more
openaire   +3 more sources

Geometric Optimisation of Quantum Thermodynamic Processes

open access: yesEntropy, 2020
Differential geometry offers a powerful framework for optimising and characterising finite-time thermodynamic processes, both classical and quantum. Here, we start by a pedagogical introduction to the notion of thermodynamic length. We review and connect
Paolo Abiuso   +3 more
doaj   +1 more source

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