LTCalcoli Releases New Study on Advanced Electromagnetic Modelling for Fusion Reactors

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LTCalcoli is excited to announce the publication of a new technical paper showcasing an innovative approach to electromagnetic (EM) modelling for fusion systems. The study focuses on improving the accuracy of EM load evaluations inside the DEMO breeding blanket (BB)—a critical component for future fusion reactors. 

Previous analyses relied on simplified models that could only provide approximate EM loads, limiting the precision of structural assessments. To address this, LTCalcoli developed an advanced EM sub-modelling method using ANSYS EMAG. The approach couples a global coarse model with a highly detailed local model, enabling engineers to capture internal EM loads with far greater accuracy, even for complex geometries such as those in the HCPB blanket concept. 

The results confirm the method’s reliability, including in scenarios with non-linear magnetic behaviour. This new modelling strategy offers a powerful tool for future BB evaluations and reinforces LTCalcoli’s role as a leader in high-level engineering analysis for fusion energy. 

 

Reference link: Investigation of Electromagnetic Sub-Modeling Procedure for the Breeding Blanket System 

LTCalcoli Publishes New Research on Multidisciplinary Design of the VNS Thermal Shield

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LTCalcoli is pleased to announce the publication of a new scientific paper showcasing a multidisciplinary optimisation strategy for the Thermal Shield of the Volumetric Neutron Source (VNS)—a key facility for advancing fusion nuclear technology. 

The study presents an integrated approach combining electromagnetic, thermal, and structural analyses to enhance the performance and reliability of the VNS Thermal Shield. This component is essential for protecting superconducting magnets and cryogenic systems by limiting heat transfer from hotter regions of the tokamak. 

The research explores multiple design iterations aimed at reducing electromagnetic forces during magnet charge and discharge cycles. By introducing targeted cuts, reinforcements, and evaluating advanced aluminium alloys and composite materials, the team optimised both rigidity and weight while ensuring robust structural integrity. 

A dedicated thermal study was also conducted to maintain the shield at around 80 K, incorporating cooling channels to improve temperature uniformity and reduce thermal gradients. 

The results demonstrate that innovative material choices and integrated design strategies can significantly improve the shield’s thermal and mechanical behaviour, reinforcing the importance of the VNS as a platform for validating critical fusion technologies under realistic operating conditions. 

With this work, LTCalcoli confirms its leadership in advanced simulation and engineering solutions for next-generation fusion systems. 

Reference link: https://www.mdpi.com/1996-1073/18/13/3305  

LTCalcoli Supports Refined Electromagnetic Analysis for W7-X Thermal Insulation

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LTCalcoli has contributed to a new study focused on improving the electromagnetic modelling of the thermal insulation (TI) system in the Wendelstein 7-X stellarator. The research was prompted by a fast plasma current decay event observed in 2018, occurring in just ~1 ms—far quicker than originally anticipated—leading to much higher induced eddy currents in key components. 

Because the TI plays a crucial role in separating the cryogenic magnet system from warmer structures, a more accurate assessment was essential. A refined EM model was developed, including plasma current sources, superconducting coils, TI panels and tubes, and the plasma vessel. Preliminary analyses showed EM loads up to seven times higher than design assumptions, and the enhanced model now provides more reliable force predictions across different decay scenarios. 

The results will support upcoming mechanical evaluations and contribute to safer, more robust operation of W7-X. This work highlights LTCalcoli’s expertise in high-fidelity simulations for complex fusion systems. 

Referenced link: https://doi.org/10.1016/j.fusengdes.2023.113492