Publications Repository - Helmholtz-Zentrum Dresden-Rossendorf
2 PublicationsQualification of multiphase CFD for nuclear reactor safety – status and perspective
Lucas, D.
Abstract
The thermal-hydraulic part of safety analyses for design based accidents mainly relies on 1D system codes. This enables a safe design and operation of existing nuclear reactors. However due to the 3D characteristics of fluid flows some additional conservatism is required. Especially for large vessels, as the Reactor Pressure Vessel, Computational Fluid Dynamics (CFD) may provide more realistic information on relevant flow and heat transfer phenomena. Single phase CFD is widely used for industrial applications, e.g. in automotive and aviation industries. However CFD is not mature for two-phase flows, which may be relevant e.g. in Loss Of Coolant Accident scenarios leading to steam-water flows in the primary circuit of a Pressurized Water Reactor. This paper discusses the present shortcomings and strategies to improve the situation.
Keywords: multiphase flow; CFD; multi-fluid approach; flow morphology; CFD-grade experiment
Involved research facilities
- TOPFLOW Facility
-
Contribution to proceedings
10th International Topical Meeting on Nuclear Thermal Hydraulics, Operation and Safety (NUTHOS-10), 14.-18.12.2014, Naha, Okinawa, Japan
Paper KN-07 -
Invited lecture (Conferences)
10th International Topical Meeting on Nuclear Thermal Hydraulics, Operation and Safety (NUTHOS-10), 14.-18.12.2014, Naha, Okinawa, Japan
Permalink: https://www.hzdr.de/publications/Publ-21408
Years: 2023 2022 2021 2020 2019 2018 2017 2016 2015