cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.57760/sciencedb.04120
title: Effects of obstacle position and number on the overpressure of hydrogen combustion in a semi-confined compartment
title: Effects of obstacle position and number on the overpressure of hydrogen combustion in a semi-confined compartment

description: During a severe accident in a pressurized water reactor, large quantities of hydrogen can be produced and released into the containment. The hydrogen mixed with air may be ignited. Rapid pressure rise is likely to occur during hydrogen combustion in a semi-confined compartmentbecause the length–diameter ratio of the compartment is relatively large and there generally are some devices and components in the compartment. Obstacle position and number have a significant and complex effect on combustion pressure. In this paper, a numerical analysis of the effects of obstacle position and number on the overpressure of hydrogen combustion in a semi-confinedcompartment was carried out to identify the arrangement of obstacles that can decrease the pressure loads generated by hydrogen combustion. The overpressure in the compartment with a single obstacle was found first increases to a maximum value and then decreases as the obstacle moving from the closed end to the open end. When there are multiple obstacles existing in the compartment, minimize the obstacle spacing and number is likely to reduce the maximum overpressure of hydrogen combustion. In addition, intentionally adjust the length of obstacle arraymay help for reducing the maximum overpressure
description: During a severe accident in a pressurized water reactor, large quantities of hydrogen can be produced and released into the containment. The hydrogen mixed with air may be ignited. Rapid pressure rise is likely to occur during hydrogen combustion in a semi-confined compartmentbecause the length–diameter ratio of the compartment is relatively large and there generally are some devices and components in the compartment. Obstacle position and number have a significant and complex effect on combustion pressure. In this paper, a numerical analysis of the effects of obstacle position and number on the overpressure of hydrogen combustion in a semi-confinedcompartment was carried out to identify the arrangement of obstacles that can decrease the pressure loads generated by hydrogen combustion. The overpressure in the compartment with a single obstacle was found first increases to a maximum value and then decreases as the obstacle moving from the closed end to the open end. When there are multiple obstacles existing in the compartment, minimize the obstacle spacing and number is likely to reduce the maximum overpressure of hydrogen combustion. In addition, intentionally adjust the length of obstacle arraymay help for reducing the maximum overpressure
DOI: 10.57760/sciencedb.04124
title: 3D tritium transport analysis for WCCB blanket based on COMSOL
title: 3D tritium transport analysis for WCCB blanket based on COMSOL

description: As one of the CFETR candidate blanket schemes, Water-Cooled Ceramic Breeder (WCCB) blanket is being designed and developed by Institute of Plasma Physics, Chinese Academy of Sciences. Considering the safe operation of blanket, especially the radioactivity of tritium, it is crucial to study the tritium performance in the blanket, such as inventory, permeation, tritium taken by purge gas and release, which can likewise provide information for study and design of Tritium Extraction System (TES) and Coolant Purification System (CPS). Based on Finite Element Method (FEM), a more accurate three-dimensional model is set up using COMSOL Multiphysics. The influence of temperature distribution and velocity field of breeder zones on tritium transport is considered in the modelling. Finally, the tritium inventory, tritium permeation, tritium taken by purge gas and tritium release out of the blanket are calculated as well as the sensitivity analysis is conducted.
description: As one of the CFETR candidate blanket schemes, Water-Cooled Ceramic Breeder (WCCB) blanket is being designed and developed by Institute of Plasma Physics, Chinese Academy of Sciences. Considering the safe operation of blanket, especially the radioactivity of tritium, it is crucial to study the tritium performance in the blanket, such as inventory, permeation, tritium taken by purge gas and release, which can likewise provide information for study and design of Tritium Extraction System (TES) and Coolant Purification System (CPS). Based on Finite Element Method (FEM), a more accurate three-dimensional model is set up using COMSOL Multiphysics. The influence of temperature distribution and velocity field of breeder zones on tritium transport is considered in the modelling. Finally, the tritium inventory, tritium permeation, tritium taken by purge gas and tritium release out of the blanket are calculated as well as the sensitivity analysis is conducted.
DOI: 10.57760/sciencedb.04127
title: Functional structure information of EAST divertor target plate
title: EAST偏滤器靶板功能结构信息

description: This document set introduces the structure, function and electromagnetic force of the divertor target plate of the EAST tokamak device, and the document set can provide a basis for RAMI analysis
description: This document set introduces the structure, function and electromagnetic force of the divertor target plate of the EAST tokamak device, and the document set can provide a basis for RAMI analysis
DOI: 10.57760/sciencedb.04135
title: Experiment and iversion data set of on-orbit vicarious calibration experiment for FY-4A at Dunhuang Radiometric Calibration Site in spring, 2017
title: 敦煌辐射校正场2017年春季风云四号A星在轨替代定标实验数据及反演数据集

description: An on-orbit vicarious calibration experiment for FY-4A was formally performed at Dunhuang Radiometric Calibration Site in late April, 2017. In order to meet the needs of the directional corrections in the sensor viewing angle of surface reflectances, the Dunhuang Gobi surface directional reflectances were measured using a portable measurement instrument. The spring directional reflection characteristics of Dunhuang site were qualitatively analyzed and the parameters of bidirectional reflectance distribution function model were inversed based on the RossThick-LiSparseR kernel-driven model.The linear regression analysis was performed for the calculated data and the measured data.The anisotropy factors in the solar principal plane were obtained by utilizing model and compared with historical data of moderate-resolution imaging spectroradiometer BRDF/Albedo model parameters product.
description: An on-orbit vicarious calibration experiment for FY-4A was formally performed at Dunhuang Radiometric Calibration Site in late April, 2017. In order to meet the needs of the directional corrections in the sensor viewing angle of surface reflectances, the Dunhuang Gobi surface directional reflectances were measured using a portable measurement instrument. The spring directional reflection characteristics of Dunhuang site were qualitatively analyzed and the parameters of bidirectional reflectance distribution function model were inversed based on the RossThick-LiSparseR kernel-driven model.The linear regression analysis was performed for the calculated data and the measured data.The anisotropy factors in the solar principal plane were obtained by utilizing model and compared with historical data of moderate-resolution imaging spectroradiometer BRDF/Albedo model parameters product.
DOI: 10.57760/sciencedb.04130
title: Evaluation of implantation-driven tritium transport in the first wall of the WCCB blanket for CFETR
title: Evaluation of implantation-driven tritium transport in the first wall of the WCCB blanket for CFETR

description: Tritium is the fuel for the future magnetic-confined fusion devices that requires accurate simulation investigation. A generic multi-physics model is implemented in this work to analyze the tritium transport behaviors in the fusion reactor components. The model is applied to evaluate plasma-induced tritium permeation and retention in the first wall (FW) of the water-cooled ceramics breeder blanket under typical operational conditions for the China Fusion Engineering Test Reactor. The total amount of tritium retention and permeation due to ion-implantation is obtained for different reactor power levels. The impact on the tritium transport behaviors from the Soret effect is also analyzed. Simulation results suggest that the tungsten armor can be a dominating source of mobile tritium retention in comparison to the steel structure in the FW; and that the Soret effect would impact the amount of tritium permeated into the coolant, in a favorable way.
description: Tritium is the fuel for the future magnetic-confined fusion devices that requires accurate simulation investigation. A generic multi-physics model is implemented in this work to analyze the tritium transport behaviors in the fusion reactor components. The model is applied to evaluate plasma-induced tritium permeation and retention in the first wall (FW) of the water-cooled ceramics breeder blanket under typical operational conditions for the China Fusion Engineering Test Reactor. The total amount of tritium retention and permeation due to ion-implantation is obtained for different reactor power levels. The impact on the tritium transport behaviors from the Soret effect is also analyzed. Simulation results suggest that the tungsten armor can be a dominating source of mobile tritium retention in comparison to the steel structure in the FW; and that the Soret effect would impact the amount of tritium permeated into the coolant, in a favorable way.
DOI: 10.57760/sciencedb.04139
title: Venous vascular Imaging
title: 静脉血管成像

description: Venous vascular imaging and enhanced images
description: Venous vascular imaging and enhanced images
DOI: 10.57760/sciencedb.04134
title: Modeling and analysis of tritium transport for updated WCCB blanket of CFETR
title: Modeling and analysis of tritium transport for updated WCCB blanket of CFETR

description: Radioactivity source item assessment has become an essential part of safety evaluations for the China Fusion Engineering Test Reactor. Thus, numerical simulations of tritium transport in a water-cooled ceramic breeder blanket are performed in this study. 2D and 3D multi-physics convection-diffusion models that couple velocity and temperature fields are built to estimate tritium permeation and other tritium-related quantities. The 2D tritium transport model is used to evaluate tritium permeation under various helium purge gas velocity conditions in the breeder zone. The quantity of tritium permeation, tritium inventory, and amount of tritium transported by the purge gas are determined. In addition, a 3D model is used to determine tritium-related quantities with better accuracy. The 2D and 3D models are compared using a fixed purge gas condition.
description: Radioactivity source item assessment has become an essential part of safety evaluations for the China Fusion Engineering Test Reactor. Thus, numerical simulations of tritium transport in a water-cooled ceramic breeder blanket are performed in this study. 2D and 3D multi-physics convection-diffusion models that couple velocity and temperature fields are built to estimate tritium permeation and other tritium-related quantities. The 2D tritium transport model is used to evaluate tritium permeation under various helium purge gas velocity conditions in the breeder zone. The quantity of tritium permeation, tritium inventory, and amount of tritium transported by the purge gas are determined. In addition, a 3D model is used to determine tritium-related quantities with better accuracy. The 2D and 3D models are compared using a fixed purge gas condition.
DOI: 10.57760/sciencedb.04136
title: Test data of breaking current of prototype in conceptual design of CFETR switch
title: Test data of breaking current of prototype in conceptual design of CFETR switch

description: 1. In the comparative experiment of three-level contact structure hybrid circuit breaker, the measured data of 6kA arc reignition without FIC breaking control;2. Oscilloscope screenshot of IGBT component realizing 8kA DC breaking.
description: 1. In the comparative experiment of three-level contact structure hybrid circuit breaker, the measured data of 6kA arc reignition without FIC breaking control;2. Oscilloscope screenshot of IGBT component realizing 8kA DC breaking.
DOI: 10.57760/sciencedb.04138
title: Simultaneous determination of nitrate, chemical oxygen demand and turbidity in water based on UV–Vis absorption spectrometry combined with interval analysis
title: Simultaneous determination of nitrate, chemical oxygen demand and turbidity in water based on UV–Vis absorption spectrometry combined with interval analysis

description: The COD standard solutions (5,10,20,30,40,50 mg/L), nitrate standard solutions (5,10,15,20 mg/L ) and turbidity standard solutions (5,10,20,30,40,50NTU ) were prepared in the laboratory. In order to explore the interval analysis method, mixed solutions of COD and nitrate, and mixed solutions of COD, nitrate and turbidity were also prepared. The turbidity compensation model based on multiplicative scatter correction, the COD compensation model based on spectral difference, and the PLS prediction model based on COD, turbidity and nitrate were completed on Matlab software.
description: The COD standard solutions (5,10,20,30,40,50 mg/L), nitrate standard solutions (5,10,15,20 mg/L ) and turbidity standard solutions (5,10,20,30,40,50NTU ) were prepared in the laboratory. In order to explore the interval analysis method, mixed solutions of COD and nitrate, and mixed solutions of COD, nitrate and turbidity were also prepared. The turbidity compensation model based on multiplicative scatter correction, the COD compensation model based on spectral difference, and the PLS prediction model based on COD, turbidity and nitrate were completed on Matlab software.
DOI: 10.57760/sciencedb.04141
title: salt-structure siesmic images-30000
title: salt-structure siesmic images-30000

description: This datasets is used for paper, Salt structure identification based on inverse multidistillation and self-distilled U-net
description: This datasets is used for paper, Salt structure identification based on inverse multidistillation and self-distilled U-net
DOI: 10.57760/sciencedb.04142
title: Figures-Observation of filament-like structures in ELMy H-mode plasma with a VUV imaging system developed on the EAST tokamak
title: Figures-Observation of filament-like structures in ELMy H-mode plasma with a VUV imaging system developed on the EAST tokamak

description: Fig.1 shows an example of the SVD analysis performed on the raw VUV images taken during one ELM cycle with high framing rate.Ocilations are observed in Chronos during the inter-ELM phase, and filament-like structures appear on the Topos.Fig.2 Conditional average analysis shows the poloidal velocity of the filament-like structure is about 4.2 km/s.Fig.3 Auto-condition averages for different thresholds shos noe clear asymmetry due to the poor temporal resolution of the experimental data.Fig.4 Synthetic image can be produced by assuming plausible two-dimensional emission perturbation. By comparing the synthetic images and experimental image, the mode structures can be derived.
description: Fig.1 shows an example of the SVD analysis performed on the raw VUV images taken during one ELM cycle with high framing rate.Ocilations are observed in Chronos during the inter-ELM phase, and filament-like structures appear on the Topos.Fig.2 Conditional average analysis shows the poloidal velocity of the filament-like structure is about 4.2 km/s.Fig.3 Auto-condition averages for different thresholds shos noe clear asymmetry due to the poor temporal resolution of the experimental data.Fig.4 Synthetic image can be produced by assuming plausible two-dimensional emission perturbation. By comparing the synthetic images and experimental image, the mode structures can be derived.
DOI: 10.57760/sciencedb.04143
title: Data record and video of breaking current experiment of hybrid DC circuit breaker prototype
title: Data record and video of breaking current experiment of hybrid DC circuit breaker prototype

description: 1. Breaking current measurement data of hybrid circuit breaker prototype under four current levels;2. When the hybrid circuit breaker prototype breaks 6kA, control whether the FIC operates, and obtain the comparative measurement data;3. High-speed camera results of arc reignition during arc contact breaking current
description: 1. Breaking current measurement data of hybrid circuit breaker prototype under four current levels;2. When the hybrid circuit breaker prototype breaks 6kA, control whether the FIC operates, and obtain the comparative measurement data;3. High-speed camera results of arc reignition during arc contact breaking current
DOI: 10.57760/sciencedb.04145
title: Tritium transport analysis for WCCB blanket of CFETR based on COMSOL
title: Tritium transport analysis for WCCB blanket of CFETR based on COMSOL

description: As for the fusion reactor, tritium has received widely attention due to its self-sufficiency and its influence on the safe operation of the fusion reactor. As a result, quantitative analysis of tritium diffusion, inventory, permeation in the blanket is crucial to the design of tritium fuel circulating system and safety issue. In this study, a twodimensional model for tritium transport in water cooled ceramic breeder (WCCB) blanket is created, and finite element software COMSOL is used to simulate the tritium transport process. The amount of tritium inventory, the tritium permeation into the coolant, the tritium taken by purge gas and the tritium release are calculated. Besides, the concentration profile of tritium and temperature profile in the blanket are given as well as the sensitivity analysis about the velocity of purge gas is conducted which can offer a reference for the design of tritium extraction system.
description: As for the fusion reactor, tritium has received widely attention due to its self-sufficiency and its influence on the safe operation of the fusion reactor. As a result, quantitative analysis of tritium diffusion, inventory, permeation in the blanket is crucial to the design of tritium fuel circulating system and safety issue. In this study, a twodimensional model for tritium transport in water cooled ceramic breeder (WCCB) blanket is created, and finite element software COMSOL is used to simulate the tritium transport process. The amount of tritium inventory, the tritium permeation into the coolant, the tritium taken by purge gas and the tritium release are calculated. Besides, the concentration profile of tritium and temperature profile in the blanket are given as well as the sensitivity analysis about the velocity of purge gas is conducted which can offer a reference for the design of tritium extraction system.
DOI: 10.57760/sciencedb.04159
title: The measurement data of 1/32 CFETR VV mock-up during manufacturing
title: 1/32 CFETR 真空室试验件制造过程中的测量数据

description: The deviation of shells; The deviation of PS3 interface; The deviation of PS4 surface; The profile deviation of 1/32 VV outer surface; The analysis of measurement uncertainty.
description: The deviation of shells; The deviation of PS3 interface; The deviation of PS4 surface; The profile deviation of 1/32 VV outer surface; The analysis of measurement uncertainty.
DOI: 10.57760/sciencedb.04148
title: Raw data of motor position in several cases
title: Raw data of motor position in several cases

description: This dataset contains both the point-to-point trajectory and periodic trajectory of two different robot joints under three controllers.
description: This dataset contains both the point-to-point trajectory and periodic trajectory of two different robot joints under three controllers.
DOI: 10.57760/sciencedb.04149
title: The simulation results
title: 仿真结果

description: Paper simulation data results, picture data 
description: Paper simulation data results, picture data
DOI: 10.57760/sciencedb.04153
title: Figures-Two-dimensional vacuum ultraviolet images in different MHD events on the EAST tokamak
title: Figures-Two-dimensional vacuum ultraviolet images in different MHD events on the EAST tokamak

description: Fig.1 Schematic view of the VUV imaging optics on EAST.Fig.2 Plasma waveforms with MHD events observed by both Mirnov and VUV system. The data are from different diagnostics on the EAST tokamak.Fig.3 Spectrom analysis on Mirnov signal and VUV measurement by performing FFT calculation.Fig.4 The mode structure is derived by comparing the synthetic images and experimental data which is obtained by performing SVD analysis on the VUV images.Fig.6 Raw images captured by the VUV imaging system during an ELM crash. Different brightness are observed at the different phases.Fig.8 Raw images captured by the VUV imaging system during an disruption. These images show the capability of the VUV imaging system on the study of MHD events on the EAST tokamak.
description: Fig.1 Schematic view of the VUV imaging optics on EAST.Fig.2 Plasma waveforms with MHD events observed by both Mirnov and VUV system. The data are from different diagnostics on the EAST tokamak.Fig.3 Spectrom analysis on Mirnov signal and VUV measurement by performing FFT calculation.Fig.4 The mode structure is derived by comparing the synthetic images and experimental data which is obtained by performing SVD analysis on the VUV images.Fig.6 Raw images captured by the VUV imaging system during an ELM crash. Different brightness are observed at the different phases.Fig.8 Raw images captured by the VUV imaging system during an disruption. These images show the capability of the VUV imaging system on the study of MHD events on the EAST tokamak.
DOI: 10.57760/sciencedb.j00133.00168
title: A set of 13 typical policies related to carbon neutral strategic actions
title: 13项典型的碳中和战略行动相关政策集

description: Set of 13 typical policies related to carbon neutral strategic actions in major developed countries/regions
description: Set of 13 typical policies related to carbon neutral strategic actions in major developed countries/regions