Results 31 to 40 of about 52,570 (259)

Quantum Monte Carlo Methods in Statistical Mechanics [PDF]

, 1999
This paper deals with the optimization of trial states for the computation of dominant eigenvalues of operators and very large matrices. In addition to preliminary results for the energy spectrum of van der Waals clusters, we review results of the ...
Melik-Alaverdian, Vilen, Nightingale, M. P.   +1 more
core   +3 more sources

Entropy Generation Minimization for Reverse Water Gas Shift (RWGS) Reactors

Entropy, 2018
Thermal design and optimization for reverse water gas shift (RWGS) reactors is particularly important to fuel synthesis in naval or commercial scenarios.
Lei Zhang, Lingen Chen, Shaojun Xia, Chao Wang, Fengrui Sun   +4 more
doaj   +1 more source

Excellent Thermoelectric Performance in KBaTh (Th = Sb, Bi) Based Half-Heusler Compounds and Design of Actuator for Efficient and Sustainable Energy Harvesting Applications

Crystals, 2023
To examine the structural, optoelectronic, thermodynamic, and thermoelectric properties of KBaTh (Th = Sb, Bi) half-Heuslers, we used the full potential, linearized augmented plane wave (FP_LAPW) approach as in the Wien2K simulator.
Debidatta Behera, Boumaza Akila, Rabie Amraoui, Salim Kadri, Sanat Kumar Mukherjee, Mostafa M. Salah, Ahmed Saeed   +6 more
doaj   +1 more source

Constructal design for dual-pressure axial-flow turbine in organic Rankine cycle

Energy Reports, 2022
Dual-pressure organic Rankine cycle (ORC) has great advantages in low-temperature waste heat utilization systems. There are few studies on optimizing the performance and structure of the dual-pressure turbine, which is a key part of the dual-pressure ORC.
Lingen Chen, Zhixiang Wu, Huijun Feng, Yanlin Ge   +3 more
doaj   +1 more source

Evaluation of a laser powder bed fusion designer Al-Mg-Zr-Si alloy for cold spray additive manufacturing

Materials & Design, 2022
Metal additive manufacturing (AM) is a constantly developing approach utilized in many novel applications. Most metal AM techniques utilize alloys designed for traditional processing conditions, such as casting, whereas implementing alloys designed for ...
Kyle Tsaknopoulos, Jack Grubbs, Bryer C. Sousa, Matthew Siopis, Aaron Nardi, Danielle L. Cote   +5 more
doaj   +1 more source

Exploration of magnesium based MgX2O4 (X = Rh, Bi) spinels for thermoelectric applications using density functional theory (DFT)

Journal of Materials Research and Technology, 2020
By using WIEN2k code, we investigated the mechanical and thermoelectric properties of magnesium based MgX2O4 (X = Rh and Bi) spinels. To compute the mechanical behavior of MgX2O4 (X = Rh and Bi), the Perdew-Bruke-Ernzerhof (PBEsol) flavor of generalized ...
Farzana Majid, M. Tauqeer Nasir, Eman Algrafy, Muhammad Sajjad, N.A. Noor, Asif Mahmood, Shahid M. Ramay   +6 more
doaj   +1 more source

Two-Stroke Thermodynamic Cycle Optimization of a Single-Cylinder Free-Piston Engine Generator [PDF]

Advances in Materials Science and Engineering, 2019
A free-piston engine generator (FPEG) is a new type of energy converter, which eliminates the crankshaft and connecting rod mechanism. In order to achieve efficient energy conversion, the two-stroke thermodynamic performance optimization of a single-cylinder free-piston engine generator is investigated in this paper.
Houliang Yu, Zhaoping Xu, Qinglin Zhang, Liang Liu, Ru Hua   +4 more
openaire   +2 more sources

Grand canonical ensemble in generalized thermostatistics

, 2008
We study the grand-canonical ensemble with a fluctuating number of degrees of freedom in the context of generalized thermostatistics. Several choices of grand-canonical entropy functional are considered.
Callen H B, Erik Van der Straeten, Jan Naudts, Jersblad J, Martinez S, McQuarrie D, Naudts J, Naudts J, Plastino A R, Toral R, Tsallis C, Tsallis C, Tsallis C, Upadhyaya A, van Zon J S   +14 more
core   +1 more source

Constructal Optimizations for Heat and Mass Transfers Based on the Entransy Dissipation Extremum Principle, Performed at the Naval University of Engineering; a Review

Entropy, 2018
Combining entransy theory with constructal theory, this mini-review paper summarizes the constructal optimization work of heat conduction, convective heat transfer, and mass transfer problems during the authors’ working time in the Naval University of ...
Lingen Chen, Qinghua Xiao, Huijun Feng
doaj   +1 more source

Thermo-Economic Optimization of Organic Rankine Cycle (ORC) Systems for Geothermal Power Generation: A Comparative Study of System Configurations

Frontiers in Energy Research, 2020
The suitability of organic Rankine cycle (ORC) technology for the conversion of low- and medium-grade heat sources to useful power has established this as a promising option in geothermal power-generation applications.
Jian Song, Ping Loo, Jaime Teo, Christos N. Markides   +3 more
doaj   +1 more source