Study of Flow and Heat Transfer for the Supercritical Hydrogen in Spallation-Type Cylindrical Neutron Moderator

Jianfei Tong; Lingbo Zhu; Yiping Lu; Tianjiao Liang; Youlian Lu; Songlin Wang; Chaoju Yu; Shikui Dong; Heping Tan

LAPSE

Living Archive for Process Systems Engineering

LAPSE:2023.19499

Published Article

LAPSE:2023.19499

Study of Flow and Heat Transfer for the Supercritical Hydrogen in Spallation-Type Cylindrical Neutron Moderator

Jianfei Tong, Lingbo Zhu, Yiping Lu, Tianjiao Liang, Youlian Lu, Songlin Wang, Chaoju Yu, Shikui Dong, Heping Tan

March 9, 2023

Pipe height in cylindrical neutron moderator is an important factor to flow pattern, temperature distribution and even the neutron characters. In this paper, the steady-state thermal analysis of cold neutron moderator is carrying out with different heights, conjugated heat transfer method and one-way coupled with a neutron transfer software. The different pipe heights, which is the jet-to-surface distances (H/D = 0.5~6), were compared using a 2D moderator model. The results show that vortex size and velocity gradient from container wall to vortex center vary with H/D, the center of recirculation zone nearly remain constant, and heat transfer effect is weakened on the target bottom surface. With H/D increasing, the velocity at bottom target surface is progressively decreased, and cooling effect is poor, leading to the rise in temperature. The optimal range cooling performance is (H/D) = 0.5~1 at Re = 1.7 × 105, and the enhancement of beam power further strengthens the thermal deposition difference between container and liquid hydrogen. The results can be applied to moderator component design and optimization in the future spallation neutron source.

Record ID

LAPSE:2023.19499

Keywords

cylindrical neutron moderator, numerical method, Optimization, spallation neutron source, supercritical hydrogen

Subject

Optimization

Suggested Citation

Tong J, Zhu L, Lu Y, Liang T, Lu Y, Wang S, Yu C, Dong S, Tan H. Study of Flow and Heat Transfer for the Supercritical Hydrogen in Spallation-Type Cylindrical Neutron Moderator. (2023). LAPSE:2023.19499

Author Affiliations

Tong J: School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China; Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China; Spallation Neutron Source Science Center, Dongguan 523803, China [ORCID]
Zhu L: Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China; Spallation Neutron Source Science Center, Dongguan 523803, China; Department of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin 150
Lu Y: Department of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin 150001, China
Liang T: Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China; Spallation Neutron Source Science Center, Dongguan 523803, China
Lu Y: Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China; Spallation Neutron Source Science Center, Dongguan 523803, China [ORCID]
Wang S: Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China; Spallation Neutron Source Science Center, Dongguan 523803, China
Yu C: Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China; Spallation Neutron Source Science Center, Dongguan 523803, China
Dong S: School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China [ORCID]
Tan H: School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

Journal Name

Energies

Volume

14

Issue

18

First Page

5856

Year

2021

Publication Date

2021-09-16