Proving Passive Safety: CFD for Natural-Circulation Cooling in SMRs

About the Webinar

Explore how Ansys Fluent can be used to model buoyancy-driven flow and natural-circulation cooling in small modular reactors. SimuTech Group CFD Staff Engineer Sasha Bakker demonstrates a practical workflow that begins with benchmark validation and progresses to reactor geometry, highlighting key 3D behaviors such as thermal stratification, mixing, and recirculation.

What We Cover

This webinar presents a practical Ansys Fluent workflow for natural circulation analysis. We start with a benchmark case to validate the methodology, then apply it to a reactor geometry to demonstrate passive cooling behavior.

What you will learn:

  • A structured workflow for modeling buoyancy-driven flow in Ansys Fluent
  • How to validate natural circulation simulations against data
  • How to identify and interpret 3D effects such as stratification and recirculation
  • How CFD results can support system-level design and safety decisions

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