Development and validation of echo PIV

• DOI: 10.1007/s00348-003-0743-5
• Publication Date: 2004-03-19T19:49:08Z
• Authors: H. B. Kim; J. R. Hertzberg; R. Shandas
• Keywords: Velocimetry; Echo (communications protocol); Particle tracking velocimetry; Opacity

The combination of ultrasound echo images with digital particle image velocimetry (DPIV) methods has resulted in a two-dimensional, two-component velocity field measurement technique appropriate for opaque flow conditions including blood flow in clinical applications. Advanced PIV processing algorithms including an iterative scheme and window offsetting were used to increase the spatial resolution of the velocity measurement to a maximum of 1.8 mm×3.1 mm. Velocity validation tests in fully developed laminar pipe flow showed good agreement with both optical PIV measurements and the expected parabolic profile. A dynamic range of 1 to 60 cm/s has been obtained to date.