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1.
The Impact of High Order Refraction on Optical Microbubble Sizing in Multiphase Flows
Figure 1: Optical layout of four-detector phase Doppler
anemometry: APD, avalanche photodiode
Figure 2: Fringe patterns of scattered
light from microbubbles
Figure 3: Description of different scattering mechanisms at
34.5o scattering angle (m=1/1.33)
Figure 4: Description of different scattering mechanisms at the
optimized orientation angle (m=1/1.33)
Figure 5: Phase-Size Conversion Factors for Different
Scattering Mechanisms
Figure 6: Phase-measurement results among the
conventional, the first order and the new approaches
Figure 7: Phase-measurement results among the
conventional, the first order and the new approaches
Figure 8: Micro air-bubble in Plexiglas for a
validation experiment
Figure 9: Experimental measurements of phase differences of an air bubble in
Plexiglas moving through the measurement volume
Figure 10: Comparison of the measurement results between the single scattering
mechanism, first order and the new approaches (bubble moving in Y direction)
Figure 11: Comparison of the measurement results between the single scattering
mechanism, first order and the new approaches (bubble moving in X direction)