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

LOW ENERGY ACCELERATOR, RAY TECHNOLOGY AND APPLICATIONS

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

FENG Qixi，

FENG Quanke，

TAKESHI Kawai

Nuclear Science and Techniques

Vol.19, No.5

pp.282-289

Published in print 20 Oct 2008

DOI：10.1016/S1001-8042(09)60005-1

CLC：TL816

42600

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.

China advanced research reactor (CARR)Neutron radiographyWater-vapor two-phase flowMCNPMATLABReconstruction

References

[1]

Vontobel P, Lehmann E H, Hassanein R, et al. Phys B, 2006, 385: 475-480.

[2]

Lehmann E H, Vontobel P, Frei G, et al. Nucl Instrum Methods Phys Res A, 2004, 531: 228-237.

[3]

Jakubek J. Nucl Instrum Methods Phys Res A, 2007, 576: 223-234.

[4]

Milczarek J J, Trzcinski A, Abd El-Ghany El Abd, et al. Nucl Instrum Methods Phys Res A, 2005, 542: 237-240.

[5]

Kardjilov N, de Beer F, Hassanein R, et al. Nucl Instrum Methods Phys Res A, 2005, 542: 336-341.

[6]

Glickstein S S, Murphy J H, Joo H. Nucl Instrum Methods Phys Res A, 1999, 424: 209-214.

[7]

Shen F.

Self-regulating characteristic of the CARR-CNS. Doctoral Thesis

, China Institute of Atomic Energy, 2006 (in Chinese).

Baidu Scholar

Google Scholar