Quantitative, three-dimensional flow in a microscopic field-of-view

Ben Ovryn, Kevin Hallinan, Kamal Das

Research output: Contribution to conferencePaperpeer-review

3 Scopus citations


We have applied `Forward Scattering Particle Image Velocimetry (FSPIV)', a technique which can be used to obtain a particle's location with extremely high axial and spatial resolution, to the measurement of three-dimensional velocities in a microscopic field-of-view. The component along the optical axis is determined by correlating the experimental data with a precise model for the scattered intensity. The model accounts for the propagation of the electric and magnetic fields scattered by the particle across a fluid-glass interface and then the phase transformation of the collecting optics and diffraction to the detector. The transverse velocity component is determined by following the centroid as a function of time. A highly coherent source is not required and therefore significant speckle noise is eliminated. The model has been verified with direct measurements of the scattering from polystyrene spheres. Additionally, the technique has been applied to the measurement of the velocity field in a heated, evaporating film.

Original languageEnglish (US)
StatePublished - Jan 1 1998
EventProceedings of the 1998 ASME Fluids Engineering Division Summer Meeting - Washington, DC, USA
Duration: Jun 21 1998Jun 25 1998


OtherProceedings of the 1998 ASME Fluids Engineering Division Summer Meeting
CityWashington, DC, USA

ASJC Scopus subject areas

  • Engineering(all)


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