Development Of Design Module Of CFETR Vacuum Vessel

China Fusion Engineering Test Reactor(CFETR)is a superconducting tokamak which under conceptual design.The missions of CFETR are achieving 50-200MW fusion power,and steady-state operation with the duty circle between 0.3 and 0.5.The large radius and small radius of CFETR is 5.7 m and 1.6 m respectively.In order to make effective self-consistent design and core parameter optimization,the development of CFETR integration design platform is necessary.CFETR integration design platform mainly includes the overall software integration platform,engineering design software integration platform,physical design software integration platform,program validation and core parameter optimization.The input parameters of engineering design are provided by physical design,the feasibility of physical design is returned by engineering design.Times of iterations are conducted among these coupling sub-modules to realize self-consistent design.Vacuum vessel design module is a part of engineering design platform,which has a great importance to achieve the function of engineering design and optimization.The design of the vacuum vessel is the result that takes account of many comprehensive factors,including not only the material properties,structure dimensions,but also the magnetic coil parameters.Changes in any of these factors may affect the choice of others and cause effect on the overall performance of vacuum vessel.It is necessary to adjust and optimize the parameters of vacuum vessel aiming at achieve a satisfactory design scheme.In this paper,based on CFETR integrated engineering design platform,an engineering design module of vacuum vessel is designed and developed in order to save computation recourse and improve computation efficiency.The main objective of this module is to realize the parameterized modeling and finite element analysis of the vacuum vessel.Based on the analysis results,the key geometric parameters could be optimized using global or local optimization algorithm,providing support and reference for detailed design of vacuum vessel quickly and efficiently.The parametric analysis module can realize automatic modeling and optimization of geometric parameters with times of iteration.And as a part of the integration platform,it can easily interact with other engineering design module and physical design module to achieve the overall self-consist design,avoiding the meaningless calculation due to the unsynchronized data.The optimization result of parametric analysis module could provide a general direction for the detailed design of vacuum vessel.The module has been used to optimize the geometric parameters of CFETR vacuum vessel to reach a lower cost,the results shows the validity and feasibility of the module.