本研究以數值模擬探討結合具交錯鲱魚骨式溝槽的直流道與彎曲流道對微混合器之績效的影響。先藉比較實驗與數值模擬結果，檢視數值模擬的可靠性。本研究提出的微混合器藉兩種機制增進混合。其一為交錯鯡魚骨式溝槽引起的流體間介面拉伸與摺疊，另一則是在彎曲流道中離心力所導致的渦流。結果顯示，在大範圍的雷諾數下，將具交錯鲱魚骨式溝槽直流道排列於蜿蜒流道前面比排列在彎曲流道中間(換言之，髮夾彎形流道)與排列於蜿蜒流道後面所得到的混合效果好。另外，發現增加後接蜿蜒流道的高度，可以降低壓降與增加混合效果。

The effects of combination of straight channels with staggered herringbone grooves and curved channels on the performance of micromixers are investigated by numerical simulations. The validity of numerical simulations is examined by comparing the numerical and experimental results. There are to mechanisms for mixing enhancement in the proposed micromixers. One is the stretch and fold of fluid interface induced by staggered herringbone grooves and the other is the vortices caused by centrifugal force in the curved channel. The results obtained for a wide range of Reynolds numbers show that the mixing efficiency of the micromixer with the staggered herringbone grooves on straight channel bottom arranged before the serpentine channel is better than that of the micromixers with the staggered herringbone grooves on straight channel bottom arranged between curved channel (i.e., hairpin-shaped channel) and the staggered herringbone grooves on straight channel bottom arranged after the serpentine channel. Besides, it is found that increasing the height of the serpentine channel reduces the pressure drop and increases mixing efficiency.

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