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September 2, 2026Experiments in FluidsOpen Access

Time-resolved photon-counting densitometry for particle-laden liquid flows

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Authors

NLNicholas A. LucidoUniversity of MichiganPKParth D. KhokhaniUniversity of MichiganEAElijah D. AndrewsUniversity of Michigan

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Overview

Experimental study demonstrates time-resolved photon-counting X-ray densitometry for particle volume fractions in turbid flows, indicating a robust way to capture internal multiphase flow dynamics.

Key Points

  • To measure time-resolved, line-of-sight-integrated particle volume fractions in optically opaque, particle-laden liquid flows with low density contrast.
  • Paired a medical-style X-ray source with a hybrid photon-counting detector to image simulated sand (glass particles) in water.
  • Applied an a posteriori spatial and temporal photon summation method to improve signal-to-noise ratios across expected volume fractions between 0 and 0.113.
  • Demonstrated the measurement technique in a laboratory lock-exchange turbidity current.
  • Spatial and temporal summation improved the maximum measured volume fraction error from ±0.015 at 18.1 pixel/mm and 500 frame/s to ±0.005 at 2.6 pixel/mm and 100 frame/s.
  • Demonstrated successful resolution of local density variations in a rapid, optically opaque lock-exchange turbidity current.

Cite This Study

Lucido et al. (2026) studied this question.

synapsesocial.com/papers/6a97e237c562ede874ec645ehttps://doi.org/10.1007/s00348-026-04301-3
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