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

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.

• Författare: Anna Timgren; Gun Trägårdh; Christian Trägårdh
• Avdelning/ar: Department of Food Technology, Engineering and Nutrition
• Publiceringsår: 2008
• Språk: Engelska
• Sidor: 565-575
• Publikation/Tidskrift/Serie: Experiments in Fluids
• Volym: 44
• Issue: 4
• Länkar: http://dx.doi.org/10.1007/s00348-007-0416-x
• Dokumenttyp: Artikel i tidskrift
• Förlag: Springer
• Ämne: Food Engineering
• Status: Published
• ISBN/ISSN/Övrigt: ISSN: 1432-1114