Study on Three-dimensional Thermal-hydraulic Characteristics of a Space Reactor based on Open Lattice Structure

被引：0
|
作者：
Wang Z. [1 ,2 ]
Zhao J. [1 ]
Shi L. [1 ]
机构：
[1] Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing
[2] Key Laboratory of Space Utilization, Technology and Engineering Center for Space Utilization, Chinese Academy of Sciences, Beijing
来源：
Hedongli Gongcheng/Nuclear Power Engineering | 2023年 / 44卷 / 02期
关键词：
Rod-shaped fuel; Sensitivity analysis; Space nuclear power; Thermal-hydraulic characteristics;
D O I：
10.13832/j.jnpe.2023.02.0054
中图分类号：
学科分类号：
摘要：
High temperature gas cooled reactor combined with magnetohydrodynamic (MHD) power generation is an efficient space power system. It can meet the requirements in space tasks for high power and high efficiency and thus has broad application prospects. In this paper, a core scheme composed of 217 fuel rods in a triangular arrangement is proposed in accordance with the design conditions to be met for MHD power generation and with the reference to the open lattice scheme in Prometheus Project. The three-dimensional modeling of the space reactor is carried out after determining the flow model through the experimental data. The thermal-hydraulic characteristics are studied on the basis of taking into consideration the gap structure, the fuel rod power distribution and the in-reactor radiation. Finally, sensitivity analysis on thermal parameters is carried out mainly for the ambient temperature and the external surface emissivity. The calculation results show that the thermal design of the core meets the requirements of material temperature and pressure drop limit. The transverse flow of coolant in the fuel area is not obvious and there is no complex vortex structure. The flow phenomenon is relatively simple. The steady-state thermal calculation results are not sensitive to the change of ambient temperature, but the change of emissivity has a relatively large impact. © 2023 Yuan Zi Neng Chuban She. All rights reserved.
引用
收藏
页码：54 / 61
页数：7
相关论文
共 12 条
  • [1] LITCHFORD R J, BITTEKER L J, JONES J E., Prospects for nuclear electric propulsion using closed-cycle magnetohydrodynamic energy conversion: NASA TP-2001-211274, (2001)
  • [2] HARADA N, KIEN L C, HISHIKAWA M., Basic studies on closed cycle MHD power generation system for space application, 35th AIAA Plasmadynamics and Lasers Conference, (2006)
  • [3] KOBAYASHI H, OKUNO Y., Feasibility study on frozen inert gas plasma MHD generator, IEEE Transactions on Plasma Science, 28, 4, pp. 1296-1302, (2000)
  • [4] Litchford R J, Harada N., Multi-MW closed cycle MHD nuclear space power via nonequilibrium He/Xe working plasma, Proceedings of Nuclear and Emerging Technologies for Space 2011, (2011)
  • [5] pp. 930-941
  • [6] TAYLOR R., Prometheus project final report, (2005)
  • [7] WOLLMAN M J, ZIKA M J., Prometheus project reactor module final report, for naval reactors information: SPP-67110-0008, (2006)
  • [8] AN W J, SONG J, XIE J C, Et al., Core design of ultrahigh temperature reactor for MHD power generation, Atomic Energy Science and Technology, 49, 12, pp. 2212-2216, (2015)
  • [9] ZHAO Z H, AN W J, XIE J C, Et al., Core design of 1MWth space reactor for closed-loop magnetic fluid power generation system, Science and Technology Innovation Herald, 15, 7, pp. 97-99, (2018)
  • [10] MENG T, CHENG K, Zhao F L, Et al., Computational flow and heat transfer design and analysis for 1/12 gas-cooled space nuclear reactor, Annals of Nuclear Energy, 135, (2020)
12