INDUSTRY

NUCLEAR
& SMALL MODULAR REACTORS (SMR)

Gain a better understanding of the dynamic behavior of nuclear cycles through Flownex Simulation Environment.

Flownex has proven it can save time and money in designing and commissioning Nuclear systems with integrated Heat & Flow simulation with control simulation.

OVERVIEW

Flownex SE enables system-level modeling of nuclear plant fluid mechanics, heat transfer, and neutronic response in both transient and steady states.

 

TOTAL PLANT MODELING

Leading nuclear companies use Flownex® SE for complete nuclear plant modeling. The reactor, balance of plant and control logic are all integrated into one versatile model, focusing on system-level performance and solutions. It includes:

  • Integrated reactor response using point kinetic neutronics
  • Balance of plant performance management using state-of-the-art flow and heat transfer
  • Control system configuration and testing using industry standard and analog control logic capability

QUALITY AND LICENSING

Nuclear technology is built on licensing. The Flownex® nuclear version can be issued with a Certificate of Compliance, and a Verification & Validation pack is available for purchase, leading the way toward your designS approval.

Flownex is developed within an ISO 9001:2015 quality management system that is ASME NQA-1 compliant.

SMR DESIGN

Flownex advances Small Modular Reactor (SMR) plant design from concept to detail design phases. Its fast solving speed and accurate representation of expected performance allow quick and informed decision-making. This drives SMR projects beyond research toward successful implementation by performing:

  • Technical feasibility studies
  • Parametric and optimization studies
  • Component performance assessments
  • Plant response simulations
  • Accident scenario investigations
  • Qualification of promising designs for primary, auxiliary, and safety systems

INTEGRATED PLANT SYSTEMS

A lot goes into simulating a complete nuclear facility. Some of the types of simulation users do with Flownex include: 

REACTOR & RCCS

  • Reactor temperature and flow distribution
  • Core power distribution profiles
  • Point kinetic neutronic behavior
  • Reactivity temperature feedback
  • Control rod influence
  • Natural circulation modeling
 

BALANCE OF PLANT

  • Start-up, shut-down, and load following
  • Steam generator boiling and superheating
  • Valve, pump & pipe sizing
  • Comprehensive library of plant modeling components, fluids, and materials
 

CONTROL SYSTEM

  • Built-in Distributed Control System library of analog and digital control components
  • Integrated plant-control response modeling
  • Control system testing & soft commissioning
  • On-line simulation

ACCIDENT & SAFETY ANALYSES

  • Natural circulation with full radiative and conjugate heat transfer
  • Safety valve operations sizing & simulation
  • LOCA, DLOFC, PLOFC, & other scenarios

 

3RD PARTY SOFTWARE

  • User command coding
  • RELAP for the addition of established models
  • MATLAB and Simulink coupling
  • OPC server link for live control systems
  • CAESAR II for pipe stress analyses
  • Ansys Fluent for detailed 3D
  • Ansys Mechanical for fluid-structure interaction

Testimonials

“We have used Flownex to develop the Thermal-Hydraulic model of our Integral Molten Salt Reactor (IMSR) by using the components of Flownex library. The user interface for transient simulations has multiple options to record and present the results. Flownex provides excellent customer support every time we need their assistance..”

– Akash Dhandukia Pr.Eng.  
  Terrestrial Energy
  Thermal Hydraulics

Move Your Nuclear Power Designs Forward Faster with PADT & Flownex

PADTsupports users of Flownex for nuclar applications in both industry and academia. Some of the most established and newest names in the industry are driving the design of the thermal management of their plants with Flownex and PADT. 

If you are ready to make Flownex part of your simulation workflow, reach out today at info@padtinc.com 

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