Couple Thermal-Hydraulics & Kinetics for PWR LOCA Study

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SUMMARY

Coupling thermal hydraulics codes with kinetics codes is a common practice for studying the behavior of kinetics during Loss of Coolant Accidents (LOCA) in Pressurized Water Reactors (PWR). Tools such as PARCS have been successfully integrated with thermal hydraulics codes like RELAP and TRACE. While coupling with Computational Fluid Dynamics (CFD) is theoretically possible, the long run-times associated with full-core CFD calculations make it less practical for transient analyses.

PREREQUISITES
  • Understanding of thermal hydraulics codes such as RELAP and TRACE
  • Familiarity with neutron kinetics codes, specifically PARCS
  • Knowledge of Loss of Coolant Accident (LOCA) scenarios in PWRs
  • Basic principles of Computational Fluid Dynamics (CFD)
NEXT STEPS
  • Research the integration of PARCS with RELAP and TRACE for transient analysis
  • Explore methodologies for coupling thermal hydraulics and kinetics codes
  • Investigate the challenges of using CFD in full-core calculations
  • Study recent papers on code coupling techniques in nuclear reactor safety analysis
USEFUL FOR

Nuclear engineers, safety analysts, and researchers focused on thermal hydraulics and kinetics in Pressurized Water Reactors.

madhisoka
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Is it possible to couple a thermal hydraulics code with a kinetics one ? , main purpose is to study the behaviour of kinetics due to a LOCA or any other changes regarding the coolant/moderator flow " talking about a PWR " .
 
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Yes, it is possible and even common. You can theoretically couple any transient T/H code to any transient neutron kinetics code. There have been many papers written coupling different codes together.

Your title mentions CFD and PARCS. PARCS has been coupled to many different T/H codes, including RELAP and TRACE.
CFD is a little harder because of the very long run-times. It takes a very long time to run a full-core CFD calculation, so running a coupled calculation with CFD would be very time consuming.
 

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