2023 Annual Meeting

Presentation information

Oral presentation

III. Fission Energy Engineering » 304-1 Thermal Hydraulics, Energy Conversion, Energy Transfer, Energy Storage

[2J10-16] Numerical Analysis

Tue. Mar 14, 2023 2:45 PM - 4:40 PM Room J (13 Bildg.2F 1321)

Chair:Takahiro Arai(CRIEPI)

4:15 PM - 4:30 PM

[2J16] Development of Advanced Neutronics/Thermal-Hydraulics Coupling Simulation System

(8) Numerical simulations of two-phase flow including phase change using temperature recovering method

*Tomohiro Kamiya1, Ayako Ono1, Kenichi Tada1, Susumu Yamashita1, Yasunobu Nagaya1, Hiroyuki Yoshida1 (1. Japan Atomic Energy Agency)

Keywords:phase change, two-phase flow, temperature recovering method

JAEA is developing a platform JAMPAN for multi-physics simulations to improve the design and safety of light water reactors. The Monte Carlo code MVP and the direct numerical simulation code for multi-phase flow JUPITER were coupled on this platform for detailed and high-fidelity neutronics/thermal-hydraulics coupling simulations. Because bubbles generated by boiling in a BWR have a large influence on neutron transport, phase change must be considered for the simulations. We will show simulation results of two-phase flow including phase change in this presentation. In these simulations, a temperature recovering method was used to estimate the amount of evaporation and condensation. We used an interface capture method as two-phase flow analysis method.