Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2008, Vol. 19 ›› Issue (5): 282 doi: 10.1016/S1001-8042(09)60005-1

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Availability of MCNP & MATLAB for reconstructing the water-vapor two-phase flow pattern in neutron radiography

FENG Qixi FENG Quanke* TAKESHI Kawai   

  1. School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China
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FENG Qixi FENG Quanke TAKESHI Kawai. Availability of MCNP & MATLAB for reconstructing the water-vapor two-phase flow pattern in neutron radiography.Nuclear Science and Techniques, 2008, 19(5): 282     doi: 10.1016/S1001-8042(09)60005-1

Abstract: The China Advanced Research Reactor (CARR) is scheduled to be operated in the autumn of 2008. In this paper, we report preparations for installing the neutron radiography instrument (NRI) and for utilizing it efficiently. The 2-D relative neutron intensity profiles for the water-vapor two-phase flow inside the tube were obtained using the MCNP code without influence of γ-ray and electronic-noise. The MCNP simulation of the 2-D neutron intensity profile for the water-vapor two-phase flow was demonstrated. The simulated 2-D neutron intensity profiles could be used as the benchmark data base by calibrating part of the data measured by the CARR-NRI. The 3-D objective images allow us to understand the flow pattern more clearly and it is reconstructed using the MATLAB through the threshold transformation techniques. And thus it is concluded that the MCNP code and the MATLAB are very useful for constructing the benchmark data base for the investigation of the water-vapor two-phase flow using the CARR-NRI.

Key words: China advanced research reactor (CARR), Neutron radiography, Water-vapor two-phase flow, MCNP, MATLAB, Reconstruction