On velocity gradients in PIV interrogation
نویسندگان
چکیده
منابع مشابه
Direct measurement of fluid velocity gradients at a wall by PIV image processing with stereo reconstruction
Velocity gradient is typically estimated in Particle Image Velocimetry (PIV) by differentiating a measured velocity field, which amplifies noise in the measured velocities. If gradients near a boundary are sought, such noise is usually greater than in bulk fluid, because of small tracer displacement, uncertainty in the effective positions of velocity vectors, intense deformation of tracer patte...
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ژورنال
عنوان ژورنال: Experiments in Fluids
سال: 2007
ISSN: 0723-4864,1432-1114
DOI: 10.1007/s00348-007-0439-3