TAILIEUCHUNG - Thermal transport in thorium dioxide

In this research paper, the thermal transport in thorium dioxide is investigated by using nonequilibrium molecular dynamics. The thermal conductivity of bulk thorium dioxide was measured to be W/m-K, confirming reported values, and the phonon mean free path was estimated to be between 7 and nm at 300 K. | Nuclear Engineering and Technology 50 2018 731 737 Contents lists available at ScienceDirect Nuclear Engineering and Technology journal homepage locate net Original Article Thermal transport in thorium dioxide Jungkyu Park Eduardo B. Farfan Christian Enriquez Check for updates Kennesaw State University Department of Mechanical Engineering Kennesaw GA 30144 USA ARTICLE INFO ABSTRACT Article history Received 28 September 2017 Received in revised form 20 December 2017 Accepted 12 February 2018 Available online 1 March 2018 In this research paper the thermal transport in thorium dioxide is investigated by using nonequilibrium molecular dynamics. The thermal conductivity of bulk thorium dioxide was measured to be W m-K confirming reported values and the phonon mean free path was estimated to be between 7 and nm at 300 K. It was observed that the thermal conductivity of thorium dioxide shows a strong dependency on temperature the highest thermal conductivity was estimated to be W m-K at 100 K and the lowest thermal conductivity was estimated to be W m-K at 1200 K. In addition by simulating Keywords Molecular Dynamics Simulation Nuclear Fuel Thermal Transport Thorium Dioxide thorium dioxide structures with different lengths at different temperatures it was identified that short wavelength phonons dominate thermal transport in thorium dioxide at high temperatures resulting in decreased intrinsic phonon mean free paths and minimal effect of boundary scattering while long wavelength phonons dominate the thermal transport in thorium dioxide at low temperatures. 2018 Korean Nuclear Society Published by Elsevier Korea LLC. This is an open access article under the CC BY-NC-ND license http licenses by-nc-nd . 1. Introduction The utilization of thorium as a new energy source has been of interest to researchers for several years 1 . Thorium exists in nature as Th-232 and is more abundant than uranium which has been the .

• Năng lượng
• Nuclear engineering and technology
• Thermal transport in thorium dioxide
• Molecular Dynamics Simulation
• Confirming reported values
• Intrinsic phonon mean free paths
• Bulk thorium dioxide
• Integral nuclear data validation
• Experimental spent nuclear fuel compositions
• Economic Co operation and Development
• Nuclear Energy Agency
• Nuclear Criticality Safety
• Expanded spent fuel isotopic compositions
• Nuclear reactor vessel water level prediction during severe accidents
• Deep neural networks
• Nuclear power plants
• Maintain nuclear reactor integrity
• Special issue on the International Symposium
• Future Instrumentation and Control for Nuclear Power Plants
• The Nuclear Engineering and Technolog
• Parameter identifiability of Boolean networks
• Application to fault diagnosis of nuclear plants
• Fault diagnosis of nuclear plants
• Nuclear Heating Reactor
• Sensor selection strategy
• Radioactive effluents released from Korean nuclear power plants
• The resulting radiation doses to members of the public
• Korean nuclear power plants
• Nuclear power plant
• The recycling of nuclear graphite after micro oxidation
• Nuclear graphite after micro oxidation
• Whether ground micro oxidation graphite
• The oxidized graphite particles
• The recycling of nuclear graphite
• Statistical model for forecasting uranium prices
• Estimate the nuclear fuel cycle cost
• Nuclear Fuel Cycle Cost
• Nuclear fuel cycle cost calculation
• The statistical autoregressive integrated moving average
• Distinct properties of tungsten austenitic stainless alloy
• Potential nuclear engineering material
• Interchanging the molybdenum in standard SS316 by tungsten
• Gamma and neutron shielding Interchanging the molybdenum
• Nuclear engineering and design
• Brayton cycle
• Supercritical carbon dioxide
• Nuclear engineering
• Safety analysis
• Control strategy
• Seismic fragility evaluation
• The base isolated nuclear power plant piping system
• The failure criterion based on stress strain
• Nuclear power plant piping system
• Seismic fragility analysis
• BNL NRC benchmark model
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• The nuclear resonance fluorescence
• High intensity laser Compton scattering
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• Microfluidic sol gel process
• The ceramic nuclear fuel particles
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• Nuclear power plant steam generators
• The failure of steam generators
• The heat exchangers
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• Safety system in nuclear power plant
• Embedded Real Time Safety Systems
• Mitigation of high energy arcing faults
• Nuclear power plant medium voltage switchgear
• High energy arcing fault
• Ultra high performance fiber reinforced concrete nuclear waste container
• High level waste
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• The dry storage container
• Canadian Nuclear facilities
• Real time estimation of break sizes during LOCA
• Nuclear power plants using NARX neural network
• Nonlinear autoregressive with exogenous inputs
• Loss of coolant accidents
• Nordic research and development cooperation
• Strengthen nuclear reactor safety after the Fukushima accident
• The Fukushima accident
• Nordic Nuclear Safety Research
• Seismic response characteristics
• Isolated AP1000 nuclear shield building subjected
• Beyond design basis earthquake shaking
• Beyond Design Basis Earthquake
• Nuclear Shield Building
• Uncertainty analysis of containment dose rate
• Containment dose rate for core damage assessment
• Containment Radiation Monitor
• Core Damage Assessment
• An evaluation method for nuclear fuel debrisefiltering performance
• Nuclear fuel debrisefiltering performance
• Comprehensive Debris Filtering Efficiency
• Debris Filtering Performance
• Debris Induced Failure
• Development of earthquake instrumentation for shutdown
• Restart criteria of the nuclear power plant
• Multivariable decision making process
• The nuclear power plant
• Development of an information reference system
• Reconstruction models of nuclear power plants
• Work site reconstruction models
• Six nuclear power plant workers
• Nondestructive inspection of spent nuclear fuel storage canisters
• Shear horizontal guided waves
• Spent nuclear fuel storage canisters
• The cask protecting the canister
• Geometric constrains inside