A microparticle image velocimetry (MPIV) system has been used to measure streamwise and spanwise velocity fields along a 100 ¡Ñ200 ¡Ñ20 mm microchannel with a hydraulic diameter of 133.3 at 10¡ØRe¡Ø421.4. The measuring technique uses 1 diameter orange fluorescent polystyrene flow tracing particles, a pulsed Nd: YAG double resonant tube laser with a micro electroscope, and a high resolution CCD camera to record particle-image fields. Local velocity profiles as flow proceeds downstream were measured at particular positions to examine the entrance effect and hydrodynamically fully developed length as well as velocity slip at wall for liquid flow in a microchannel. Velocity slip exists with a considerable value over the entire range of Re under study. Moreover, the friction factors were calculated and compared with those of previous study. Good agreement was found which also assesses the accuracy of the present results.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0712104-105102 |
| Date | 12 July 2004 |
| Creators | Lin, Chih-Yi |
| Contributors | S.S.Hsieh, C.C.Su, C.J.Ho |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0712104-105102 |
| Rights | unrestricted, Copyright information available at source archive |
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