Abstract
A novel design of passive micromixer based on mechanism of planar asymmetric split and recombine(P-ASAR) of fluid stream was proposed. Mixing performance of this micromixer was analyzed numerically with three-dimensional Navier-Stokes equations. The steady laminar flow was solved by using the finite-volume method and SIMPLE algorithm. The mixing index as the measure of mixing performance, was investigated at a range of Reynolds numbers(1-80). The result showed significant increase of mixing index for the P-ASAR micromixer with fan-shaped cavity in the sub-channel. The geometrical parameters of fan-shaped cavity affected mixing index of this type of micromixer. With mixing intensity and pump power consumption in mind, mixing index of the P-ASAR micromixer with fan-shaped cavity could reach around 78% when the width ratio of major sub-channel to fan-shaped cavity channel is 1/3.
| Original language | English |
|---|---|
| Pages (from-to) | 1219-1225 |
| Number of pages | 7 |
| Journal | Huagong Xuebao/CIESC Journal |
| Volume | 62 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - May 2011 |
| Externally published | Yes |
Keywords
- Asymmetric split and recombine
- Fan-shaped cavity
- Mixing performance
- Numerical simulation
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