Data di Pubblicazione:
2006
Citazione:
Heterodyne speckle velocimetry / M.D. Alaimo, D. Magatti, F. Ferri, M.A.C. Potenza. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - 88:19(2006 May 08), pp. 191101.191101.1-191101.191101.3.
Abstract:
We present a simple method for fluid velocimetry based on the velocity of the heterodyne speckles
generated by tracking particles illuminated with coherent light. It works in real time and provides
instantaneous two-dimensional velocity mappings in the direction orthogonal to the optical axis,
independently of the particle concentration and size, also for subwavelength particles. It also
provides the velocity distribution of the fluid over the entire sample thickness. The method has been
quantitatively tested by using the motions of rigid diffusers and applied for mapping the flow of a
confined fluid.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Scattering ; speckles ; optical velocimetry ; fluids
Elenco autori:
M.D. Alaimo, D. Magatti, F. Ferri, M.A.C. Potenza
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