Optical flow method for neutron radiography flow diagnostics

Tianshu Liu

doi:10.1063/5.0063836

Optical flow method for neutron radiography flow diagnostics

2021-10-11

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DOI：10.1063/5.0063836

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The principle of an optical flow method is formulated for neutron radiography (NR) flow diagnostics to determine high-resolution velocity fields of two-phase flows. This method is based on solving an optical flow equation derived from the continuous equation for NR image analysis as an inverse problem using a variational method. The mathematical definition and physical meaning of the optical flow in NR images of a two-phase flow are clarified. As an example, the optical flow method is used to extract complex velocity fields from a time sequence of dynamic NR images acquired in an air-water two-phase flow in a flat bubbler. Published under an exclusive license by AIP Publishing

Keywords:

STEADY 2-PHASE FLOW

3-DIMENSIONAL VISUALIZATION

Optical flow method for neutron radiography flow diagnostics

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