1. Development of a novel reconstruction method for two-phase flow CT with improved simulated annealing algorithm
- Author
-
Huasi Hu, Mingfei Yan, Guang Hu, Qiang Yi, Chao He, and Bin Liu
- Subjects
Computer science ,020209 energy ,Simulated annealing algorithm ,Reconstruction algorithm ,02 engineering and technology ,Iterative reconstruction ,lcsh:TK9001-9401 ,Two-phase flow ,030218 nuclear medicine & medical imaging ,Neutron CT ,03 medical and health sciences ,0302 clinical medicine ,Nuclear Energy and Engineering ,Flow (mathematics) ,Search algorithm ,Simulated annealing ,Image reconstruction ,0202 electrical engineering, electronic engineering, information engineering ,lcsh:Nuclear engineering. Atomic power ,Minification ,Tomography ,Algorithm - Abstract
Two-phase flow, especially gas-liquid two-phase flow, has a wide application in industrial field. The diagnosis of two-phase flow parameters, which directly determine the flow and heat transfer characteristics, plays an important role in providing the design reference and ensuring the security of online operation of two-phase flow system. Computer tomography (CT) is a good way to diagnose such parameters with imaging method. This paper has proposed a novel image reconstruction method for thermal neutron CT of two-phase flow with improved simulated annealing (ISA) algorithm, which makes full use of the prior information of two-phase flow and the advantage of stochastic searching algorithm. The reconstruction results demonstrate that its reconstruction accuracy is much higher than that of the reconstruction algorithm based on weighted total difference minimization with soft-threshold filtering (WTDM-STF). The proposed method can also be applied to other types of two-phase flow CT modalities (such as X(γ)-ray, capacitance, resistance and ultrasound).
- Published
- 2021