[{"data":1,"prerenderedAt":121},["ShallowReactive",2],{"h2BqqnVlqbfQkvU9t_4j4RsgODmxD5gAdi9Hyj8E2YU":3,"_apollo:default":119,"_apollo:identified":120},{"seo":4,"posts":15},{"social":5,"openGraph":11,"__typename":14},{"twitter":6,"__typename":10},{"cardType":7,"username":8,"__typename":9},"summary_large_image","dassault3ds","SEOSocialTwitter","SEOSocial",{"defaultImage":12,"__typename":13},null,"SEOOpenGraph","SEOConfig",{"nodes":16,"__typename":118},[17],{"id":18,"slug":19,"title":20,"uri":21,"excerpt":22,"locale":23,"featuredImage":26,"tableOfContents":34,"content":41,"date":42,"translations":43,"author":44,"tags":58,"globalTags":72,"brands":88,"keywords":99,"seo":107,"__typename":117},"cG9zdDozMDA0MjI=","nuclear-reactor-safety-verification-catia-magic-dymola","CATIA MBSE: Verifying Nuclear Reactor Safety with CATIA Magic and Dymola","\u002Fbrands\u002Fcatia\u002Fnuclear-reactor-safety-verification-catia-magic-dymola","\u003Cp>See how Assystem coupled CATIA Magic and Dymola on the 3DEXPERIENCE platform to advance nuclear reactor safety verification, enabling continuous checks of dynamic performance requirements throughout simulation for next-generation reactor architectures.\u003C\u002Fp>\n",{"locale":24,"__typename":25},"en_US","Locale",{"node":27,"__typename":33},{"large":28,"__typename":29,"medium_large":28,"thumbnail":30,"srcSet":31,"sizes":32},"https:\u002F\u002Fblog-assets.3ds.com\u002Fuploads\u002F2026\u002F08\u002Fcatia-x-assystem-768x507.jpg","MediaItem","https:\u002F\u002Fblog-assets.3ds.com\u002Fuploads\u002F2026\u002F08\u002Fcatia-x-assystem-150x150.jpg","https:\u002F\u002Fblog-assets.3ds.com\u002Fuploads\u002F2026\u002F08\u002Fcatia-x-assystem-300x198.jpg 300w, https:\u002F\u002Fblog-assets.3ds.com\u002Fuploads\u002F2026\u002F08\u002Fcatia-x-assystem-768x507.jpg 768w, https:\u002F\u002Fblog-assets.3ds.com\u002Fuploads\u002F2026\u002F08\u002Fcatia-x-assystem.jpg 1000w","(max-width: 300px) 100vw, 300px","NodeWithFeaturedImageToMediaItemConnectionEdge",[35,36,37,38,39,40],"Model-Based Systems Engineering as an Enabler for Safety|model-based-systems-engineering-as-an-enabler-for-safety-0","Coupling CATIA Magic and Dymola for Systems Architecture and Multi-Physics Behavior Consistency|coupling-catia-magic-and-dymola-for-systems-architecture-and-multi-physics-behavior-consistency-1","Continuous Verification of Dynamic Performance Requirements|continuous-verification-of-dynamic-performance-requirements-2","A Single Knowledge Base for Multidisciplinary Collaboration|a-single-knowledge-base-for-multidisciplinary-collaboration-3","Conclusion|conclusion-4","FAQ|faq-5","\u003Cdiv class=\"ds-video\">\u003Ca data-3ds-videoplayer=\"modal\" href=\"https:\u002F\u002Fwww.youtube.com\u002Fwatch?v=awY5o67wubA\" target=\"_blank\">\u003Cspan class=\"ImageCover Border Block\" style=\"background-image: url(https:\u002F\u002Fimg.youtube.com\u002Fvi\u002FawY5o67wubA\u002Fhqdefault.jpg); width:100%; height: 100%;\">\u003Cspan class=\"Btn--circle isCenter\">\u003Ci class=\"Icon Icon--playBig\">\u003C\u002Fi>\u003C\u002Fspan>\u003C\u002Fspan>\u003C\u002Fa>\u003Cspan>\u003Cfigure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\">\u003Cdiv class=\"wp-block-embed__wrapper\">\n\u003Ciframe loading=\"lazy\" title=\"CATIA Magic ensures the traceability and performance of your project - CATIA x ASSYSTEM\" width=\"640\" height=\"360\" src=\"https:\u002F\u002Fwww.youtube.com\u002Fembed\u002FawY5o67wubA?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen>\u003C\u002Fiframe>\n\u003C\u002Fdiv>\u003C\u002Ffigure>\u003C\u002Fspan>\u003C\u002Fdiv>\n\n\n\u003Cp>Early simulation provides the evidence and confidence needed to verify complex system requirements throughout the engineering process. For \u003Cstrong>Massood Akmali, Senior R&D Engineer at \u003Ca href=\"https:\u002F\u002Fwww.assystem.com\u002Fen\u002F\" data-type=\"link\" data-id=\"https:\u002F\u002Fwww.assystem.com\u002Fen\u002F\">Assystem\u003C\u002Fa>\u003C\u002Fstrong>, verifying complex system requirements means connecting system architecture with simulation from the earliest design stages. By coupling  \u003Ca href=\"https:\u002F\u002Fwww.3ds.com\u002Fproducts\u002Fcatia\u002Fcatia-magic\">\u003Cstrong>CATIA Magic\u003C\u002Fstrong>\u003C\u002Fa>\u003Cstrong> \u003C\u002Fstrong>and \u003Ca href=\"https:\u002F\u002Fwww.3ds.com\u002Fproducts\u002Fcatia\u002Fdymola?_gl=1*5ws47k*_gcl_au*MTkxMzI2OTI5LjE3NzAyOTkwMDY.*_ga*MzA1MzMxMzY2LjE3NzAyOTkwMDY.*_ga_DYJDKXYEZ4*czE3NzIwMjU3NTEkbzE4JGcxJHQxNzcyMDI1NzU2JGo1NSRsMCRoMA..*_ga_TPGKGE8GTG*czE3NzIwMjU3NTEkbzE4JGcxJHQxNzcyMDI1NzU2JGo1NSRsMCRoMA..\">\u003Cstrong>Dymola\u003C\u002Fstrong>\u003C\u002Fa>\u003Cstrong> \u003C\u002Fstrong>on the \u003Ca href=\"https:\u002F\u002Fwww.3ds.com\u002F3dexperience\u002F\">\u003Cstrong>3DEXPERIENCE platform\u003C\u002Fstrong>\u003C\u002Fa>, Assystem developed an innovative methodology that enables continuous verification of dynamic performance requirements throughout simulation, supporting the development of advanced nuclear reactor architectures.\u003C\u002Fp>\n\n\n\n\u003Ch2 class=\"wp-block-heading\" id=\"model-based-systems-engineering-as-an-enabler-for-safety-0\">\u003Cstrong>\u003Cstrong>Model-Based Systems Engineering as an Enabler for Safety\u003C\u002Fstrong>\u003C\u002Fstrong>\u003C\u002Fh2>\n\n\n\n\u003Cp>At Assystem, Massood Akmali develops advanced methodologies for verifying requirements in complex energy systems, particularly nuclear reactors.\u003C\u002Fp>\n\n\n\n\u003Cblockquote class=\"is-layout-flow wp-block-quote-is-layout-flow\">\n\u003Cp>\u003Cem>The main challenge when it comes to complex systems is how to verify the complexities and how to verify the requirements\u003C\u002Fem>.\u003C\u002Fp>\n\u003C\u002Fblockquote>\n\n\n\n\u003Cp>In nuclear reactor development, demonstrating compliance with safety-related requirements cannot be left until the end of the project. Instead, verification must be supported throughout the engineering process.\u003C\u002Fp>\n\n\n\n\u003Cp>This requires a \u003Ca href=\"https:\u002F\u002Fwww.3ds.com\u002Fproducts\u002Fcatia\u002Fsystems-engineering\">\u003Cstrong>model-based systems engineering\u003C\u002Fstrong>\u003C\u002Fa>\u003Cstrong> \u003C\u002Fstrong>approach that structures system architecture, requirements and engineering data while enabling collaboration across disciplines.\u003C\u002Fp>\n\n\n\n\u003Cp>\u003Cstrong>CATIA Magic\u003C\u002Fstrong> plays a central role by providing a SysML-based environment to model system architecture, manage requirements and maintain end-to-end traceability between stakeholder requirements, architectural decisions and verification activities. This traceability helps teams connect engineering evidence, including simulation results, to the design choices that support safety objectives.\u003C\u002Fp>\n\n\n\n\u003Ch2 class=\"wp-block-heading\" id=\"coupling-catia-magic-and-dymola-for-systems-architecture-and-multi-physics-behavior-consistency-1\">\u003Cstrong>\u003Cstrong>Coupling CATIA Magic and Dymola for Systems Architecture and Multi-Physics Behavior Consistency\u003C\u002Fstrong>\u003C\u002Fstrong>\u003C\u002Fh2>\n\n\n\n\u003Cblockquote class=\"is-layout-flow wp-block-quote-is-layout-flow\">\n\u003Cp>\u003Cem>\u003Cem>The CATIA Magic, in one hand it ensures the traceability and the model based approach to visualize your architecture of your system. And on the other hand Dymola ensures the physical modeling and performance of your system\u003C\u002Fem>\u003C\u002Fem>.\u003C\u002Fp>\n\u003C\u002Fblockquote>\n\n\n\n\u003Cp>This complementary approach became the foundation of Assystem’s methodology.\u003C\u002Fp>\n\n\n\n\u003Cp>The team modeled a molten salt reactor architecture in \u003Cstrong>SysML\u003C\u002Fstrong> using \u003Cstrong>CATIA Magic\u003C\u002Fstrong>. In parallel, they developed a multi-physics system model in \u003Ca href=\"https:\u002F\u002Fwww.3ds.com\u002Fproducts\u002Fcatia\u002Fdymola\u002Flatest-release\">\u003Cstrong>Dymola\u003C\u002Fstrong>\u003C\u002Fa> using the \u003Cstrong>Modelica language\u003C\u002Fstrong>. Dymola’s domain-specific libraries and equation-solving capabilities enabled the evaluation of thermodynamic and dynamic system behaviors.\u003C\u002Fp>\n\n\n\n\u003Cp>By coupling both environments, Assystem connected the system architecture with its multi-physics behavior. Simulation parameters and results were exchanged between \u003Cstrong>Dymola\u003C\u002Fstrong> and \u003Cstrong>CATIA Magic\u003C\u002Fstrong> using telecommunications protocols, allowing engineering models and simulation results to remain synchronized throughout the verification process.\u003C\u002Fp>\n\n\n\n\u003Ch2 class=\"wp-block-heading\" id=\"continuous-verification-of-dynamic-performance-requirements-2\">\u003Cstrong>\u003Cstrong>Continuous Verification of Dynamic Performance Requirements\u003C\u002Fstrong>\u003C\u002Fstrong>\u003C\u002Fh2>\n\n\n\n\u003Cp>Traditionally, engineers perform simulations, analyze the results separately and then manually assess whether the system satisfies its performance and safety-related requirements.\u003C\u002Fp>\n\n\n\n\u003Cblockquote class=\"is-layout-flow wp-block-quote-is-layout-flow\">\n\u003Cp>\u003Cem>For example, classically what we did, we tried to do the simulations manually and trying to go through the really textbook […] ways to see the final results and also to see how the outcome may affect the actual safety requirements\u003C\u002Fem>.\u003C\u002Fp>\n\u003C\u002Fblockquote>\n\n\n\n\u003Cp>Assystem’s methodology streamlines this workflow.\u003C\u002Fp>\n\n\n\n\u003Cp>As simulation progresses in Dymola, relevant performance data is continuously exchanged with CATIA Magic, where it can be evaluated against the defined system requirements. This enables engineers to verify dynamic performance requirements throughout the simulation process rather than relying solely on manual post-processing.\u003C\u002Fp>\n\n\n\n\u003Cblockquote class=\"is-layout-flow wp-block-quote-is-layout-flow\">\n\u003Cp>\u003Cem>We see exactly in the same time, because of these telecommunications protocols, we’ve got the simulations and answers to the conformity\u003C\u002Fem>.\u003C\u002Fp>\n\u003C\u002Fblockquote>\n\n\n\n\u003Cp>The result is greater visibility into system behavior, improved traceability between requirements and simulation evidence, and a more efficient verification process.\u003C\u002Fp>\n\n\n\n\u003Ch2 class=\"wp-block-heading\" id=\"a-single-knowledge-base-for-multidisciplinary-collaboration-3\">\u003Cstrong>\u003Cstrong>A Single Knowledge Base for Multidisciplinary Collaboration\u003C\u002Fstrong>\u003C\u002Fstrong>\u003C\u002Fh2>\n\n\n\n\u003Cp>Developing advanced nuclear systems requires close collaboration between systems engineers, physicists, simulation specialists and other stakeholders. When engineering information is spread across disconnected tools, maintaining consistency becomes increasingly difficult.\u003C\u002Fp>\n\n\n\n\u003Cp>By integrating \u003Cstrong>CATIA Magic\u003C\u002Fstrong> and \u003Cstrong>Dymola \u003C\u002Fstrong>on the \u003Cstrong>3DEXPERIENCE platform\u003C\u002Fstrong>, \u003Cstrong>Assystem\u003C\u002Fstrong> established a shared engineering environment where system architecture, requirements and simulation models remain connected.\u003C\u002Fp>\n\n\n\n\u003Cblockquote class=\"is-layout-flow wp-block-quote-is-layout-flow\">\n\u003Cp>\u003Cem>A physicist can work with the engineer and the safety engineers and also with other stakeholders. So this enhances basically all the collaborations within our system\u003C\u002Fem>\u003C\u002Fp>\n\u003C\u002Fblockquote>\n\n\n\n\u003Cp>The result is a common engineering reference that improves collaboration while preserving traceability across requirements, architectural decisions and simulation outcomes.\u003C\u002Fp>\n\n\n\n\u003Ch2 class=\"wp-block-heading\" id=\"conclusion-4\">\u003Cstrong>Conclusion\u003C\u002Fstrong>\u003C\u002Fh2>\n\n\n\n\u003Cp>For advanced nuclear reactor development, demonstrating compliance with dynamic performance requirements benefits from tightly connecting systems architecture and simulation throughout the engineering process. By combining \u003Cstrong>CATIA Magic\u003C\u002Fstrong> for Model-Based Systems Engineering with \u003Cstrong>Dymola\u003C\u002Fstrong> for high-fidelity multi-physics simulation, Assystem developed an integrated methodology that supports continuous verification during simulation.\u003C\u002Fp>\n\n\n\n\u003Cp>This approach strengthens traceability between requirements, architecture and simulation evidence, improves multidisciplinary collaboration and helps engineering teams make better-informed decisions from the earliest stages of system development.\u003C\u002Fp>\n\n\n\n\u003Ch2 class=\"wp-block-heading\" id=\"faq-5\">\u003Cstrong>FAQ\u003C\u002Fstrong>\u003C\u002Fh2>\n\n\n\n\u003Cul class=\"wp-block-list\">\n\u003Cli>\u003Cstrong>\u003Cstrong>What is CATIA Magic used for in nuclear system development?\u003C\u002Fstrong>\u003C\u002Fstrong>\u003C\u002Fli>\n\u003C\u002Ful>\n\n\n\n\u003Cp>CATIA Magic provides a SysML-based environment for modeling system architecture, managing requirements and maintaining traceability throughout complex engineering projects.\u003C\u002Fp>\n\n\n\n\u003Cul class=\"wp-block-list\">\n\u003Cli>\u003Cstrong>\u003Cstrong>How does Dymola complement CATIA Magic?\u003C\u002Fstrong>\u003C\u002Fstrong>\u003C\u002Fli>\n\u003C\u002Ful>\n\n\n\n\u003Cp>Dymola performs high-fidelity multi-physics simulations using Modelica, enabling engineers to evaluate system behavior and performance under dynamic operating conditions.\u003C\u002Fp>\n\n\n\n\u003Cul class=\"wp-block-list\">\n\u003Cli>\u003Cstrong>\u003Cstrong>How are requirements verified during simulation?\u003C\u002Fstrong>\u003C\u002Fstrong>\u003C\u002Fli>\n\u003C\u002Ful>\n\n\n\n\u003Cp>Simulation data generated in Dymola is continuously exchanged with CATIA Magic, allowing engineers to evaluate system performance against defined requirements throughout the simulation process.\u003C\u002Fp>\n\n\n\n\u003Cul class=\"wp-block-list\">\n\u003Cli>\u003Cstrong>\u003Cstrong>Why is coupling systems architecture with simulation valuable?\u003C\u002Fstrong>\u003C\u002Fstrong>\u003C\u002Fli>\n\u003C\u002Ful>\n\n\n\n\u003Cp>It connects system architecture with simulation evidence, improving traceability, supporting verification activities and helping engineering teams make informed design decisions earlier in development.\u003C\u002Fp>\n\n\n\n\u003Cul class=\"wp-block-list\">\n\u003Cli>\u003Cstrong>What are the benefits of integrating CATIA Magic and Dymola?\u003C\u002Fstrong>\u003C\u002Fli>\n\u003C\u002Ful>\n\n\n\n\u003Cp>The integration creates a unified engineering environment where requirements, architecture and simulation models remain connected, improving collaboration, reducing manual verification effort and strengthening engineering consistency.\u003C\u002Fp>\n","2026-08-19T09:36:32",[],{"node":45,"__typename":57},{"nicename":46,"description":47,"slug":48,"name":49,"firstName":50,"lastName":51,"avatar":52,"__typename":56},"guillaumebelloncle","","GuillaumeBELLONCLE","Guillaume BELLONCLE","Guillaume","BELLONCLE",{"default":53,"url":54,"__typename":55},"mm","https:\u002F\u002Fsecure.gravatar.com\u002Favatar\u002F60be4b2c1aa2e4fdbd82f6f2015aefed0a9efbcc7b1efd4815995aa51a7a22a6?s=96&d=mm&r=g","Avatar","User","NodeWithAuthorToUserConnectionEdge",{"edges":59,"nodes":67,"__typename":71},[60],{"isPrimary":61,"node":62,"__typename":66},true,{"slug":63,"name":64,"__typename":65},"design-simulation","Design & Simulation","Taxonomy_topic","PostToTaxonomy_topicConnectionEdge",[68],{"id":69,"name":64,"uri":70,"__typename":65},"dGVybTo4NTU5","\u002Ftopics\u002Fdesign-simulation\u002F","PostToTaxonomy_topicConnection",{"nodes":73,"__typename":87},[74,79,83],{"id":75,"name":76,"uri":77,"__typename":78},"dGVybTo4ODM0","3DEXPERIENCE platform","\u002Ftags\u002F3dexperience-platform\u002F","Taxonomy_tag",{"id":80,"name":81,"uri":82,"__typename":78},"dGVybTo5MTY4","Dymola","\u002Ftags\u002Fdymola\u002F",{"id":84,"name":85,"uri":86,"__typename":78},"dGVybTo5MTM0","System Engineering","\u002Ftags\u002Fsystem-engineering\u002F","PostToTaxonomy_tagConnection",{"edges":89,"nodes":96,"__typename":98},[90],{"isPrimary":61,"node":91,"__typename":95},{"slug":92,"name":93,"__typename":94},"catia","CATIA","Taxonomy_brand","PostToTaxonomy_brandConnectionEdge",[97],{"name":93,"slug":92,"__typename":94},"PostToTaxonomy_brandConnection",{"nodes":100,"__typename":106},[101,104],{"name":102,"__typename":103},"CATIA Magic","Taxonomy_keyword",{"name":105,"__typename":103},"MBSE","PostToTaxonomy_keywordConnection",{"title":108,"metaDesc":109,"opengraphAuthor":47,"opengraphDescription":109,"opengraphTitle":20,"opengraphUrl":110,"opengraphSiteName":111,"opengraphPublishedTime":112,"opengraphModifiedTime":113,"twitterTitle":47,"twitterDescription":47,"readingTime":114,"metaRobotsNoindex":115,"__typename":116},"Nuclear Reactor Safety Verification with CATIA Magic and Dymola","CATIA Magic and Dymola enable nuclear reactor safety verification through real-time simulation and automated requirement validation.","https:\u002F\u002Fblog-frontoffice-contrib-prd.itvpc.3ds.com\u002Fbrands\u002Fcatia\u002Fnuclear-reactor-safety-verification-catia-magic-dymola\u002F","Dassault Systèmes blog","2026-08-19T09:36:32+00:00","2026-08-19T09:36:35+00:00",4,"index","PostTypeSEO","Post","RootQueryToPostConnection",{},{},1787171128560]