Neutron Transport Study Based on Assembly Modular Ray Tracing MOC Method

Tian Chao; Zheng Youqi; Li Yunzhao; Li Shuo; Chai Xiaoming

doi:10.13832/j.jnpe.2014.03.0157

Volume 36 Issue 3

Feb. 2025

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Tian Chao, Zheng Youqi, Li Yunzhao, Li Shuo, Chai Xiaoming. Neutron Transport Study Based on Assembly Modular Ray Tracing MOC Method[J]. Nuclear Power Engineering, 2015, 36(3): 157-161. doi: 10.13832/j.jnpe.2014.03.0157

Citation:

Tian Chao, Zheng Youqi, Li Yunzhao, Li Shuo, Chai Xiaoming. Neutron Transport Study Based on Assembly Modular Ray Tracing MOC Method[J]. Nuclear Power Engineering, 2015, 36(3): 157-161. doi: 10.13832/j.jnpe.2014.03.0157

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Neutron Transport Study Based on Assembly Modular Ray Tracing MOC Method

doi: 10.13832/j.jnpe.2014.03.0157

1. School of Nuclear Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China;
2. State Nuclear Power Software Development Center, Beijing, 102200, China;
3. Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, 610041, China

Received Date: 2015-01-21
Rev Recd Date: 2015-03-02

Available Online: 2025-02-15

Abstract

Abstract

It is difficulty for the MOC method based on Cell Modular Ray Tracing to deal with the irregular geometry such as the water gap between the PWR lattices. Hence, the neutron transport code NECP-Medlar based on Assembly Modular Ray Tracing is developed. CMFD method is used to accelerate the transport calculation. The numerical results of the 2D C5G7 benchmark and typical PWR lattice prove that NECP-Medlar has an excellent performance in terms of accuracy and efficiency. Besides, NECP-Medlar can describe clearly the flux distribution of the lattice with water gap.
- MOC method,
- Cell modular,
- Assembly modular,
- Coarse mesh finite difference,
- Acceleration