[Analysis Case] Magnetic Field Analysis of Superconductors Considering the Critical State Model
The software used is "PHOTO-EDDY"! It is also possible to analyze Kim models that depend on magnetic flux density.
Models used to describe superconductors include the critical state model and the Kim model. The critical state model is a physical model that assumes a balance between the Lorentz force acting on the vortices and the pinning force caused by impurities within the superconductor. In "PHOTO-EDDY," users can specify the constitutive equations, allowing for the analysis of not only a constant Jc but also models like the Kim model, where Jc depends on magnetic flux density. The choice of which equations to use is up to the user. While care must be taken regarding the convergence of calculations, a high degree of freedom in input methods is available. [Case Overview] ■ Software Used: PHOTO-EDDY ■ Analysis Results - The superconductor was modeled using the critical state model, with a critical current density Jc set at 1.0×10^9 [A/m²]. - The input current was adjusted so that the magnetic flux density at the center of the coil reached a maximum of 5 [T] when in the air-core condition. *For more details, please refer to the PDF document or feel free to contact us.
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At Photon, we are developing "electromagnetic field analysis software" that models and simulates products and components utilizing electromagnetic phenomena on computers. In traditional design and development environments, the process has primarily revolved around trial and error through prototypes based on the experience of engineers and experiments with those prototypes. However, conducting experiments with actual prototypes and analyzing the results requires significant time and cost. Moving forward, transitioning from an experimental and prototype-based approach to an analysis-based design is a critical issue for improving productivity, and establishing simulation technology as the core of analysis-based design techniques is a challenge. In this context, Photon is developing and providing "analysis software" focusing on electromagnetic fields, as well as heat, vibration, and sound fields. By utilizing Photon’s software, efficient development and design of various industrial products can be achieved. In this way, Photon aims to reduce the number of prototypes and development costs, shorten development periods in the manufacturing sites of our users, and ultimately support the enhancement of our users' competitiveness.
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