A5078908961- Thermal Radiation and Cooling Technologies
- Aluminum Alloys Composites Properties
- Advanced ceramic materials synthesis
- Advanced Thermodynamics and Statistical Mechanics
- Atmospheric aerosols and clouds
- Nuclear Materials and Properties
- Fusion materials and technologies
- MXene and MAX Phase Materials
- Mechanical stress and fatigue analysis
- Vibration and Dynamic Analysis
- Advanced machining processes and optimization
- Educational Robotics and Engineering
- Nuclear and radioactivity studies
- Surface Treatment and Residual Stress
- Advanced materials and composites
- Microstructure and mechanical properties
- Metal and Thin Film Mechanics
- solar cell performance optimization
- Nuclear reactor physics and engineering
- Nuclear materials and radiation effects
- Silicon Carbide Semiconductor Technologies
- Radiation Therapy and Dosimetry
- Fluid Dynamics and Vibration Analysis
- Advanced Thermoelectric Materials and Devices
- Advanced Thermodynamic Systems and Engines
Institute of Modern Physics
2016-2024
Chinese Academy of Sciences
2016-2024
Ji Hua Laboratory
2022-2024
Lanzhou University
2019-2021
The effect of segregation behavior common impurity atoms (including Mg, Al, Si, S, Ca, Fe) and transmutation (H, He) on the performance grain boundary (GB) in Beryllium oxide (BeO) has been systematically investigated by first-principles calculations. In study solubility atoms, uncharged vacancy defects play a dominant role BeO bulk. Besides, it is also found that O more easily formed Most prefer to occupy substitutional site Be atom. Mg S are most prone dissolution bulk, difficult remove...
In thermophotovoltaic (TPV) systems, it is crucial that the selective emitters can tailor emission spectrum to match bandgap of photovoltaic (PV) cells and largely enhance system efficiency. this work, a metamaterial emitter based on metal-insulator-metal (MIM) structure proposed obtain high energy conversion efficiencies. The geometric parameters MIM have been investigated an excellent radiation composed W HfO 2 . performance attributed excitation surface plasmon polariton (SPP) cavity...
First-principles calculations are performed to study the effects of defect on structure and electronic properties Ti 3 SiC 2 . The show that formation energy Si vacancy is minimal compared with or C vacancies in defects layer also can be formed under high-temperature irradiation environments. C-layers Ti-layers almost impossible form. If layers formed, they prefer substituted by O H atoms form MXene structure, unit cell lattice constant decreases c-direction. However, it has quite slight...
In a fast spectrum reactor, the fuel rod bundle is mainly positioned radially by wire which can make contact with adjacent rods, and then it inevitable that flow-induced vibration (FIV) will cause fretting wear fatigue of cladding at position. Therefore, computational model life about caused FIV be studied in this paper. Based on random bundle, Hertz theory, Archard wire-to-adjacent (WAFR) have been established. Finally, taking CEFR design parameters as an example, are calculated, found...
Abstract In this study, we propose an innovative approach that enhances the performance of backpropagation (BP) neural network in predicting low‐cycle fatigue life Ti‐6Al‐4V alloy by improving dung beetle optimization (DBO) algorithm with maximin Latin hypercube design (MLHD) strategy. To address challenges posed complex geometric components under different temperature conditions, research employs finite element simulation to expand limited experimental dataset and utilizes these data...
Radioisotope thermophotovoltaic (RTPV) generator has wide application prospects in sea, land, air, medical, electronics, and other fields. In order to better investigate the influence of alpha rays on emitters, (TPV) cells, components, it is vital find out a suitable way which can rapidly evaluate select each components TPV cells by combination heating irradiation beam. this work, test system, tungsten emitter been heated He <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...
The radioisotope batteries have drawn extensive attention due to the high energy density. Nowadays, thermophotovoltaic systems are one of most promising batteries. In this work, crystal emitter design and associated performance generators investigated. First, photonic together with adoptions both multi-layer insulation supporting materials discussed. order optimize system efficiency, effects area emitters mainly We analyzed efficiency using GaSb cells Si cells, respectively. With can...
Nuclear reactor fuel assemblies are mainly composed of cylinders bundle(CB), calculating the dynamics characteristics CB under axial flow can lay a foundation for predicting fretting wear and vibration fatigue. In paper, coupling dynamic model forced pulsating is established. And stability analysis natural frequency calculation system steady compared with existing results to verify model. Finally, Runge-Kutta method applied solve equation flow. The influence parameters m, w0, on...
First-principles calculations have been performed to investigate the effect of segregation transmutation helium and lithium atoms on strength beryllium {101̄1} grain boundary. For stability in bulk beryllium, both them preferentially occupy substitutional site with lowest formation energy. In investigation behavior multiple at boundary, it has found that more tend segregate boundary compared limited atoms. Meanwhile, equilibrium concentration decreases rising temperature. The one atom could...
TThe China initiative Accelerator Driven System (CiADS) is a megawatt-scale principle verification facility. Since 237Np the main long-lived MA nuclide in discharged fuel of Pressurized Water Reactors (PWRs), transmutation efficiency of237Np CiADS studied. We use code FLUKA to simulate spallation reaction between proton and target material. The neutron transport nuclides burnup coupling IMPC-Burnup 2.0 used 237Np. Three different positions are selected place assemblies. simulation results...