| Info. | Vol.1 - No.3 (2007.09.20) |
|---|---|
| Title | Evaluation of Micro Mixers using Competing Reactions |
| Authors | Duckjong Kim1 & Sang-Jin Park1 |
| Institutions | 1Micro/Bio Fluidics Team, Korea Institute of Machinery and Materials, 171 Jang-dong, Yuseong-gu, Daejeon 305-343, Korea Correspondence and requests for materials should be addressed to D. Kim (dkim@kimm.re.kr) |
| Abstract | In this study, two micro mixers were fabricated and tested using a system of parallel competing reactions involving the Dushman reaction between iodide and iodate, coupled with neutralization. Using competing reactions allowed the influence of the operating conditions and microstructure on mixing performance to be investigated. The results of this study revealed that the degree of mixing was improved as the flow rate through the mixer increased, which is consistent with existing experimental data obtained using conventional optical techniques. This study also demonstrated that the mixing performance could be enhanced by changing the inlet shape of the mixing chamber. Numerical simulations conducted to determine why the change in inlet shape enhanced the mixing performance indicated that mixing performance is dependent on the degree of impingement and the circulation flow, which are dominated by the flow rate and the inlet shape of the mixing chamber, respectively. |
| Keyword | Mixing performance evaluation, Micro mixer, Competing reactions, Numerical simulation |
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