Optical Flow Diagnostic Technique Development

1) Holographic PTV for 3D Flow Measurements: From Microfluidics to Wall-bounded Turbulence

  1. 3D Velocity, Shape and Concentration Measurements

  2. Microfluidics: <70 um vector spacing for 2 mmx 2 mm x 1 mm (sreamwise x spanwise x wall-normall)

  3. Turbulent Channel Flows: < 1.1 mm vector spacing for 20 mmx 20 mm x 50 mm (sreamwise x spanwise x wall-normall)

    1. Recognition and classification of red blood cells

    2. Study Motile Marine Organisms, < 13 um wall proximity for velocimetry

    • Project affiliations University of Minnesota, Department of Mechanical Engineering, Flow Field Imaging Lab.

-------------------- please play the video

2) Super Large-Scale Field PIV: Using Natural Snowfall to Probe Atmospheric Boundary Layer:

  • Flow field behind utility-scale wind turbines (e.g. 2.5 MW)

    • Atmospheric boundary layer flow field characterization

    • <30 cm vector spacing for 20 m x 60 m field of view

    • Project affiliations University of Minnesota, Department of Mechanical Engineering, Flow Field Imaging Lab.

    • Project affiliations University of Minnesota, Saint Anthony Falls Laboratory (SAFL).

SnowPIV.pptx