Results 51 to 60 of about 43,956 (263)
CerâmicaThis work aimed to study a sintered Ni-doped ZnO dilute magnetic semiconductor synthesized by means of a combustion reaction and to evaluate the effect of doping and sintering in the band gap and magnetic properties of the material.
A. Morais +4 more
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Energies, 2017 The effect of oxygen-enriched air on low-rank coal char combustion was experimentally investigated. In this work, a coal-heating reactor equipped with a platinum wire mesh in the reaction chamber was used to analyze the combustion temperature, reaction ...
Gyeong-Min Kim +3 more
doaj +1 more source
Mathematical modeling of SHS process in heterogeneous reactive powder mixtures [PDF]
Компьютерные исследования и моделирование, 2011 In this paper we present a mathematical model and numerical results on a propagation of the combustion front of the SHS compound, where the rate of chemical reaction at each point of the SHS sample is determined by solving the problem of diffusion and ...
Denis Sergeevich Shultz +1 more
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Advanced Materials, EarlyView.Inspired by the octopus and the golden wheel spider, soft robots with liquid crystal elastomer arc fibers as appendages are fabricated to transcend surface constraints through an elevated center of mass and minimal contact footprints. By leveraging curvature‐encoded deformation‐recovery cycles, these robots exhibit contractile, torsional, and flexural ...
Jong Bin Kim +5 more
wiley +1 more source
Simulation and Experimental Research on Arc-Induced Fires in Photovoltaic Systems
EnergiesDC fault arcs comprise one of the most serious safety hazards in photovoltaic systems, and their danger far exceeds that of AC arcs. DC arcs lack a natural zero-crossing point, and their burning time can last from several seconds to several minutes ...
Runan Song +3 more
doaj +1 more source
Chemical kinetic simulation of kerosene combustion in an individual flame tube
Journal of Advanced Research, 2014 The use of detailed chemical reaction mechanisms of kerosene is still very limited in analyzing the combustion process in the combustion chamber of the aircraft engine.
Wen Zeng +3 more
doaj +1 more source
Influence of Carbon Nanoparticles on Electrically Induced Wear of Grease‐Lubricated Steels
Advanced Materials Interfaces, EarlyView.When an electric current enters a pair of rubbing surfaces, enormous damage takes place. In this research, how such damage occurs in the presence of protective grease and the mitigation with added carbon nanoparticles, were investigated. It was discovered that those particles regulate transport and interfacial electrical stability of the grease ...
Mohammad Humaun Kabir +6 more
wiley +1 more source
DEM-CFD modeling of limestone flowing-down in a combustion field in a rotary kiln
Journal of Thermal Science and TechnologyA new efficient numerical approach for Reynold-averaged Navier–Stokes (RANS) simulation coupled with the discrete element method (DEM) is developed for the calcination of limestone flowing down in a real kiln, considering the combustion reaction of ...
Susumu TSUCHIYA +5 more
doaj +1 more source
Reaction and diffusion in turbulent combustion [PDF]
, 1991 The primary objective of the research is to use Direct Numerical Simulations (DNS) to study turbulent non-premixed combustion. In DNS, the fluid mechanical and thermochemical conservation equations are solved by an accurate numerical method, without any averaging or turbulence modeling.
openaire +3 more sources
Advanced Materials Technologies, EarlyView.The article overviews past and current efforts on caloric materials and systems, highlighting the contributions of Ames National Laboratory to the field. Solid‐state caloric heat pumping is an innovative method that can be implemented in a wide range of cooling and heating applications.
Agata Czernuszewicz +5 more
wiley +1 more source