Results 11 to 20 of about 12,670 (246)
A Review of Studies on Ramjet and Scramjet Engines from an Energy–exergy Viewpoint [PDF]
فناوری در مهندسی هوافضا, 2021 The second law of thermodynamics and exergy is an important issue in the analysis of propulsion systems that have been highly regarded by researchers in recent years. Studies show that the analysis of the first law in air propulsion systems alone has low
Jamasb Pirkandi, AliReza Zolfi
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A review of studies on air-breathing turbine engines from an energy–exergy viewpoint [PDF]
فناوری در مهندسی هوافضا, 2023 Studies show that the analysis of the first law in air propulsion systems alone is not sufficient, and for a complete study of a system, the second law and exergy analysis should also be considered.
jamasb pirkandi +2 more
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Modeling Fluid dynamics and Aerodynamics by Second Law and Bejan Number (Part 1 - Theory) [PDF]
INCAS Bulletin, 2019 Two fundamental questions are still open about the complex relation between fluid dynamics and thermodynamics. Is it possible (and convenient) to describe fluid dynamic in terms of second law based thermodynamic equations?
Michele TRANCOSSI, Jose PASCOA
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The influence of convective exchanges on Coandã effect [PDF]
INCAS Bulletin, 2019 Modeling Coandã effect has been a fundamental issue in fluid dynamic research in the XX century. It has lost some interest because of the improvement in CFD, even if it could be still important in the area of the preliminary design of aerodynamic devices
Michele TRANCOSSI, Jose PASCOA
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TERMODINAMIKA LUBANG HITAM: HUKUM PERTAMA DAN KEDUA SERTA PERSAMAAN ENTROPI
Jurnal Kumparan Fisika, 2023 ABSTRAK Artikel ini membahas konsep termodinamika yang berlaku pada Lubang Hitam, yaitu hukum termodinamika pertama dan kedua. Hukum pertama termodinamika menghubungkan perubahan massa dengan perubahan entropi dan kerja, memungkinkan Lubang Hitam ...
Ruben Cornelius Siagian +3 more
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The Rectified Second Law of Thermodynamics [PDF]
The Journal of Physical Chemistry B, 2006 Equilibrium thermodynamics is combined with Jarzynski's irreversible work theorem to quantify the excess entropy produced by irreversible processes. The resulting rectified form of the second law parallels the first law, in the sense that it facilitates the experimental measurement of excess entropy changes resulting from irreversible work and heat ...
Ben-Amotz, Dor, Honig, J. M.
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The second laws of quantum thermodynamics [PDF]
Proceedings of the National Academy of Sciences, 2015 Significance In ordinary thermodynamics, transitions are governed by a single quantity–the free energy. Its monotonicity is a formulation of the second law. Here, we find that the second law for microscopic or highly correlated systems takes on a very different form than it does at the macroscopic scale, imposing not just one ...
Fernando G. S. L. Brandão +4 more
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Antimatter and the Second Law of Thermodynamics [PDF]
Foundations of Science, 2020 AbstractIn this short paper we make a proposal that the second law of thermodynamics holds true for a closed physical system consisting of pure antimatter in the thermodynamical limit, but in a reversed form. We give two plausible arguments in favour to this proposal: one refers to the CPT theorem of relativistic quantum field theories while the other ...
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On the Second Law of Thermodynamics and the Piston Problem [PDF]
Journal of Statistical Physics, 2004 29 pages, 9 figures submitted to Journal of Statistical Physics (2003)
Gruber, C., Pache, S., Lesne, A.
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The generalized second law of thermodynamics with Barrow entropy
European Physical Journal C: Particles and Fields, 2021 We investigate the validity of the generalized second law of thermodynamics, applying Barrow entropy for the horizon entropy. The former arises from the fact that the black-hole surface may be deformed due to quantum-gravitational effects, quantified by ...
Emmanuel N. Saridakis, Spyros Basilakos
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