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Application of the PIV technique to measurements around and inside a forming drop in a liquid–liquid system

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Author

  • Anna Timgren
  • Gun Trägårdh
  • Christian Trägårdh

Summary, in English

A particle image velocimetry (PIV) method has been developed to measure the velocity field inside and around a forming drop with a final diameter of 1 mm. The system, including a microscope, was used to image silicon oil drops forming in a continuous phase of water and glycerol. Fluorescent particles with a diameter of 1 μm were used as seeding particles. The oil was forced through a 200 μm diameter glass capillary into a laminar cross-flow in a rectangular channel. The velocity field was computed with a double-frame cross-correlation function down to a spatial resolution of 21 × 21 μm. The method can be used to calculate the shear stress induced at the interface by the cross-flow of the continuous phase and the main forces involved in the drop formation process.

Department/s

  • Department of Food Technology, Engineering and Nutrition

Publishing year

2008

Language

English

Pages

565-575

Publication/Series

Experiments in Fluids

Volume

44

Issue

4

Document type

Journal article

Publisher

Springer

Topic

  • Food Engineering

Status

Published

ISBN/ISSN/Other

  • ISSN: 1432-1114