4.4 Article

Particle velocity field measurements in a near-wall flow using evanescent wave illumination

Journal

EXPERIMENTS IN FLUIDS
Volume 34, Issue 1, Pages 115-121

Publisher

SPRINGER-VERLAG
DOI: 10.1007/s00348-002-0541-5

Keywords

-

Ask authors/readers for more resources

Evanescent waves from the total internal reflection of a 488 nm argon-ion laser beam at a glass-water interface were used to measure velocity fields in creeping rotating Couette flow within 380 nm of the stationary solid surface. Images of fluorescent 300 and 500 nm diameter polystyrene and silica particles suspended in water recorded at 30 Hz were processed using cross-correlation particle image velocimetry to determine the two in-plane velocity components with an in-plane spatial resolution of 40x40 mum over a 200 mum (h)x150 mum (v) field of view. The results are in reasonable agreement with the exact solution for the corresponding single-phase Stokesian flow. These data are, to our knowledge, the first velocity field measurements with this small out-of-plane spatial resolution (in all cases less than 380 nm), and the first such measurements in this interfacial or near-wall region. This paper describes the novel experimental diagnostic technique used to obtain these results.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.4
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available