Abstract
The experiment of flow characteristics in rectangular cross section swirl microchannel test pieces under acceleration overload condition was conducted with ethylene glycol solution of 30% (volume concentration). Three swirl microchannels test pieces with width of 0.5 mm and different depths were considered. Each test piece was made of copper with six microchannels contained, and the acceleration loaded was provided by centrifugal acceleration test machine. Flow characteristics of the swirl microchannels under different acceleration situations were investigated with various conditions of fluid flux, and the influence of microchannel structure and liquid velocity was gained. The results show that the acceleration direction has significant effect on the flow resistance of swirl microchannels, and the ability of swirl microchannel against the influence of acceleration condition is significantly affected by the Dean number.
| Original language | English |
|---|---|
| Pages (from-to) | 67-72 |
| Number of pages | 6 |
| Journal | Shiyan Liuti Lixue/Journal of Experiments in Fluid Mechanics |
| Volume | 24 |
| Issue number | 3 |
| State | Published - Jun 2010 |
Keywords
- Acceleration overload
- Centrifugal force
- Dean number
- Flow resistance
- Microchannel
- Swirl
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