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    • Three-dimensional instantaneous velocity field measurement using digital holography microscope

      Dhananjay Kumar Singh P K Panigrahi

      Contributed Papers Volume 82 Issue 2 February 2014 pp 439-444

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/082/02/0439-0444

    • Keywords

       

      Holography; velocity measurements; laminar flow in microchannel.

    • Abstract

       

      In the present study, a digital holography microscope has been developed to study instantaneous 3D velocity field in a square channel of 1000 × 1000 $\mu𝑚^2$ cross-section. The flow field is seeded with polystyrene microspheres of size $d_p = 2.1$ 𝜇m. The volumetric flow rate is set equal to 20 𝜇l/min. The instantaneous 3D velocity field is obtained by correlating the particles obtained from the 3D numerical reconstruction of holograms using particle tracking velocimetry (PTV).

    • Author Affiliations

       

      Dhananjay Kumar Singh1 P K Panigrahi1 2

      1. Department of Mechanical Engineering, Indian Institute of Technology, Kanpur 208 016, India
      2. Centre for Lasers and Photonics, Indian Institute of Technology, Kanpur 208 016, India

    • Dates

       
      Published
      February 2014
      Early published
      13 February 2014

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