Results 51 to 60 of about 628,675 (145)

Self-gravitating Stellar Systems and Non-extensive Thermostatistics

open access: yes, 2004
After introducing the fundamental properties of self-gravitating systems, we present an application of Tsallis' generalized entropy to the analysis of their thermodynamic nature. By extremizing the Tsallis entropy, we obtain an equation of state known as
Sakagami, Masa-aki, Taruya, Atsushi
core   +1 more source

Thermodynamic consistency of liquid-gas lattice Boltzmann simulations

open access: yes, 2006
Lattice Boltzmann simulations have been very successful in simulating liquid-gas and other multi-phase fluid systems. However, the underlying second order analysis of the equation of motion has long been known to be insufficient to consistently derive ...
A. J. Wagner   +3 more
core   +1 more source

A Thermodynamic Analysis of the Pressure Gain of Continuously Rotating Detonation Combustor for Gas Turbine

open access: yesApplied Sciences, 2018
Considering the potential applications of continuously rotating detonation (CRD) combustors in gas turbines, this paper performed a numerical investigation into the pressure gain performance of CRD combustors, using methane–air as a reactive mixture and ...
Hongtao Zheng   +4 more
doaj   +1 more source

A Combined System of Stirling Engine and Gas Turbine Based on LNG Cold Energy

open access: yesZhileng xuebao, 2012
Utilizing cold energy of LNG would bring good economic benefits. A combined system of Stirling engine and gas turbine for recovering LNG cold energy is put forward.
Li Jing, Chen Xi, Zhang Hua
doaj  

Thermodynamic inequalities in superfluid

open access: yes, 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   +8 more
core   +1 more source

Recovery of Low-Concentration Tungsten from Acidic Solution Using D318 Macroporous Resin

open access: yesMolecules
Tungsten is a crucial strategic metal that plays a significant role in various fields, such as the defense industry, fine chemicals, and the preparation of new materials.
Xiangrong Zeng   +6 more
doaj   +1 more source

Parameter Analysis of Anion Exchange Membrane Water Electrolysis System by Numerical Simulation

open access: yesEnergies
Anion exchange membrane electrolysis, which combines the advantages of both alkaline electrolysis and proton-exchange membrane electrolysis, is a promising technology to reduce the cost of hydrogen production. The present work focused on the study of the
Shing-Cheng Chang   +2 more
doaj   +1 more source

Milne-Eddington inversion of the Fe I line pair at 630~nm

open access: yes, 2010
The iron lines at 630.15 and 630.25 nm are often used to determine the physical conditions of the solar photosphere. A common approach is to invert them simultaneously under the Milne-Eddington approximation.
Auer   +29 more
core   +1 more source

Thermodynamic, Economic and Environmental Evaluation of an Improved Ventilation Air Methane-Based Hot Air Power Cycle Integrated with a De-Carbonization Oxy-Coal Combustion Power Plant

open access: yesEnergies, 2018
Efficient utilization of ventilation air methane (VAM) as well as improving the energy efficiency of de-carbonization oxy-coal combustion power plants are intensively studied for achieving energy savings and greenhouse gas (GHG) emission control.
Cheng Xu   +4 more
doaj   +1 more source

Information measures based on Tsallis' entropy and geometric considerations for thermodynamic systems

open access: yes, 2005
An analysis of the thermodynamic behavior of quantum systems can be performed from a geometrical perspective investigating the structure of the state space.
A. Plastino   +23 more
core   +1 more source

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