Electromagnetic(EM) load is one of the key design drivers for the blanket shield block(SB) and other in-vessel components. In this article, an EM analysis method was developed to address the EM force on the SB. The pl...Electromagnetic(EM) load is one of the key design drivers for the blanket shield block(SB) and other in-vessel components. In this article, an EM analysis method was developed to address the EM force on the SB. The plasma currents, which vary spatially and temporally,are loaded as a filament at each time point. The standard blanket module No.04(BM04) under major disruption(MD) is selected to perform the analyses. The analyses results are validated by comparing currents on the passive structure. To better understand the effects of cooling channels and slits on the EM force, the case of SB without cooling channel and the case without slits are calculated to make comparisons. The results show that the slits play an important role in controlling the EM load on SB.展开更多
The ITER neutron shielding blocks are located between the outer shell and the inner shell of the vacuum vessel to provide neutron shielding. Considering the combined loads acting on the shielding blocks during ITER pl...The ITER neutron shielding blocks are located between the outer shell and the inner shell of the vacuum vessel to provide neutron shielding. Considering the combined loads acting on the shielding blocks during ITER plasma operation, the structure of the shielding blocks must be evaluated. Using the finite element method with ANSYS analysis software, static structural analysis is performed, including elastic analysis and limit analysis for one typical shielding block. The evaluated results based on RCC-MR code show that the structure of this shielding block can meet the design requirement.展开更多
The ITER neutron shielding blocks are located between the inner shell and the outer shell of the vacuum vessel (VV) with the main function of providing neutron shielding. Considering the combined loads of the shieldin...The ITER neutron shielding blocks are located between the inner shell and the outer shell of the vacuum vessel (VV) with the main function of providing neutron shielding. Considering the combined loads of the shielding blocks during the plasma operation of the ITER, limit analysis for one typical ferromagnetic (FM) shielding block has been performed and the structural design has been evaluated based on the American Society of Mechanical Engineers (ASME) criterion and European standards. Results show that the collapse load of this shielding block is three times the specified load, which is much higher than the design requirement of 1.25. The structure of this neutron shielding block has a sufficient safety margin.展开更多
ITER in-wall shielding(IIS)is situated between the doubled shells of the ITERVacuum Vessel(IVV).Its main functions are applied in shielding neutron,gamma-ray and toroidalfield ripple reduction.The structure of IIS has...ITER in-wall shielding(IIS)is situated between the doubled shells of the ITERVacuum Vessel(IVV).Its main functions are applied in shielding neutron,gamma-ray and toroidalfield ripple reduction.The structure of IIS has been modelled according to the IVV design criteriawhich has been updated by the ITER team(IT).Static analysis and thermal expansion analysiswere performed for the structure.Thermal-hydraulic analysis verified the heat removal capabilityand resulting temperature,pressure,and velocity changes in the coolant flow.Consequently,ourdesign work is possibly suitable as a reference for IT's updated or final design in its next step.展开更多
基金supported partially by the National Magnetic Confinement Fusion Science Program of China(No.2008GB106000)
文摘Electromagnetic(EM) load is one of the key design drivers for the blanket shield block(SB) and other in-vessel components. In this article, an EM analysis method was developed to address the EM force on the SB. The plasma currents, which vary spatially and temporally,are loaded as a filament at each time point. The standard blanket module No.04(BM04) under major disruption(MD) is selected to perform the analyses. The analyses results are validated by comparing currents on the passive structure. To better understand the effects of cooling channels and slits on the EM force, the case of SB without cooling channel and the case without slits are calculated to make comparisons. The results show that the slits play an important role in controlling the EM load on SB.
文摘The ITER neutron shielding blocks are located between the outer shell and the inner shell of the vacuum vessel to provide neutron shielding. Considering the combined loads acting on the shielding blocks during ITER plasma operation, the structure of the shielding blocks must be evaluated. Using the finite element method with ANSYS analysis software, static structural analysis is performed, including elastic analysis and limit analysis for one typical shielding block. The evaluated results based on RCC-MR code show that the structure of this shielding block can meet the design requirement.
基金supported by IWS Detailed Design, Engineering Drawing Preparation and Analysis (No.2 Reference 4200000119 )
文摘The ITER neutron shielding blocks are located between the inner shell and the outer shell of the vacuum vessel (VV) with the main function of providing neutron shielding. Considering the combined loads of the shielding blocks during the plasma operation of the ITER, limit analysis for one typical ferromagnetic (FM) shielding block has been performed and the structural design has been evaluated based on the American Society of Mechanical Engineers (ASME) criterion and European standards. Results show that the collapse load of this shielding block is three times the specified load, which is much higher than the design requirement of 1.25. The structure of this neutron shielding block has a sufficient safety margin.
基金the National 973 program of China(No.2004CB720704)
文摘ITER in-wall shielding(IIS)is situated between the doubled shells of the ITERVacuum Vessel(IVV).Its main functions are applied in shielding neutron,gamma-ray and toroidalfield ripple reduction.The structure of IIS has been modelled according to the IVV design criteriawhich has been updated by the ITER team(IT).Static analysis and thermal expansion analysiswere performed for the structure.Thermal-hydraulic analysis verified the heat removal capabilityand resulting temperature,pressure,and velocity changes in the coolant flow.Consequently,ourdesign work is possibly suitable as a reference for IT's updated or final design in its next step.
