Abstract
A measurement technique for a flow field in a microchannel was developed using sub micron fluorescent particles. The present study focused on a novel measurement technique so called Spatial Averaged Time-resolved Particle Tracking Velocimetry (SAT-PTV) which is able to detect the temporal variation of a fluid flow eliminating the effect of Brownian motion of the sub-micron tracer particles. Velocity vectors of individual tracer particles were averaged within a local small area, instead of temporal aerage, to realize higher time resolution. SAT-PTV method was evaluated by synthetic particle images in both a uniform flow and a flow with linear velocity gradient and the method confirmed the reduction of the measurement errors associated with Brownian motion. The validation of the present technique was performed in a microchannel flow with the time resolution of 37 ms.
| Original language | English |
|---|---|
| Pages (from-to) | 3033-3040 |
| Number of pages | 8 |
| Journal | Nippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B |
| Volume | 68 |
| Issue number | 675 |
| DOIs | |
| Publication status | Published - 2002 Nov |
Keywords
- Brownian Motion
- Digital Image Processing
- Flow Measurements
- Fluorescent Particles
- Microspace
- PIV
- PTV
- Velocity Distribution
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanical Engineering