Results 41 to 50 of about 949,984 (294)

Gravitational thermodynamics [PDF]

Complexity, 1997
The gravitational N-body problem, for $N>2$, is the oldest unsolved problem in mathematical physics. Some of the most ideal examples that can be found in nature are globular star clusters, with $N \sim 10^6$. In this overview, I discuss six types of fundamental sources of unpredictability, each of which poses a different challenge to attempts to ...
openaire   +2 more sources

Development of a Low-NO_x Fuel-Flexible and Scalable Burner for Gas Turbines

Energies
To reduce dependence on fossil fuels, gas turbine plants using hydrogen/methane blends provide a crucial solution for decarbonizing thermal power generation and promoting a sustainable energy transition.
Antonio Di Nardo, Eugenio Giacomazzi, Matteo Cimini, Guido Troiani, Silvera Scaccia, Giorgio Calchetti, Donato Cecere   +6 more
doaj   +1 more source

Numerical analysis of solar air collector provided with rows of rectangular fins

Energy Reports, 2020
The most promising collector must achieve the best thermal efficiency and fill out high requirements of low weight, low power consumption, ease of manufacturing, and low cost. In this study; a novel efficiently optimized flat plate solar air collector is
Marwa Ammar, Ameni Mokni, Hatem Mhiri, Philippe Bournot   +3 more
doaj   +1 more source

Energy performance based optimization of building envelope containing PCM combined with insulation considering various configurations

Energy Reports, 2023
Phase change material (PCM) is considered as a promising solution for reducing heating and cooling energy consumption by integrating them into the building envelope, which in turn reduces CO2 emissions.
Sana Dardouri, Souhir Mankai, Maha M. Almoneef, Mohamed Mbarek, Jalila Sghaier   +4 more
doaj   +1 more source

Geometric description of BTZ black holes thermodynamics

, 2008
We study the properties of the space of thermodynamic equilibrium states of the Ba\~nados-Teitelboim-Zanelli (BTZ) black hole in (2+1)-gravity.
Alberto Sánchez, E. Witten, H. B. Callen, Hernando Quevedo, J. Polchinski, L. D. Landau, S. Carlip, V. I. Arnold   +7 more
core   +1 more source

Thermodynamic inequalities in superfluid

, 2003
We investigate general thermodynamic stability conditions for the superfluid. This analysis is performed in an extended space of thermodynamic variables containing (along with the usual thermodynamic coordinates such as pressure and temperature ...
A. F. Andreev, E. Varoquaux, I. M. Khalatnikov, J. S. Langer, L. A. Melnikovsky, L. D. Landau, L. Kramer, R. J. Donnelly, R. J. Donnelly   +8 more
core   +1 more source

Characterization of the Petrophysical Properties of the Timahdit Oil Shale Layers in Morocco

Geosciences, 2020
In this work, we study the variability of the lithological composition and organic matter content of samples were taken from the different layers M, X and Y of the Timahdit oil shale in Morocco, in order to experimentally analyze the impact of this ...
Hanane Sghiouri El Idrissi, Abderrahim Samaouali, Younes El Rhaffari, Salah El Alami, Yves Geraud   +4 more
doaj   +1 more source

On the speed of fluctuations around thermodynamic equilibrium

, 2009
We study the speed of fluctuation of a quantum system around its thermodynamic equilibrium state, and show that the speed will be extremely small for almost all times in typical thermodynamic cases. The setting considered here is that of a quantum system
Andreas Winter, Anthony J Short, Gemmer J, Goldstein S Lebowitz J L Mastrodonato C Tumulka R Zanghì N, Lloyd S, Noah Linden, Sandu Popescu   +6 more
core   +1 more source

Screening of Ionic Liquids for the Separation of Aromatics via Activity Coefficients at Infinite Dilution Measurements and COSMO-RS Modeling

Journal of Chemistry
This manuscript focuses on the application of imidazolium-based ionic liquids (ILs) 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM]+[PF6]−) and 1-butyl-3-methylimidazolium bis(trifluoromethane)sulfonimide ([BMIM]+[TFSI]−) as potential entrainers ...
Indra Bahadur, Bakusele Kabane, Hamed Hashemi, Oratile Legae, Paramespri Naidoo, Deresh Ramjugernath, Marcin Hubert Durski   +6 more
doaj   +1 more source

Effect of small-size space porous flexible PVC material on propane deflagration

AIP Advances, 2022
The effect of porous flexible polyvinyl chloride (PVC) barriers on the kinetic properties of propane explosions is investigated based on fluid dynamics and combustion-related theory. Furthermore, using small-sized cylindrical pipes, separate experimental
Zhenglong Qiao, Heng Ma
doaj   +1 more source