Full text loading...
(Color online) Algorithm for single-particle velocity analysis: [(a) and (b)] time sequence of x-ray phase-contrast images; (c) filtered image of an individual particle on a single frame; (d) determination of the searching window of a subframe, and subimage scanning on the selected searching window; and (e) two-dimensional correlation function from consecutive images, and a final velocity vector.
(Color online) Velocity reconstruction by an axisymmetric tomography: (a) raw image by x-ray phase-contrast imaging, (b) number density distribution of particles for velocity reconstruction along , (c) projected axial velocity profile along the direction amassed with 240 frames, and (d) reconstructed axial velocity profile compared with analytical solution.
(Color online) Particle size effect on velocity profile: (a) distributions of particle density along the radial direction of the flow, (b) projection axial velocities, and (c) reconstructed axial velocities.
(Color online) Interaction flow of small fluid particles around a big particle: comparison between (a) visible light image and (b) x-ray phase-contrast image, and (c) projected velocity profile of the small particles with respect to that for the large particle (dashed line).
Article metrics loading...