Optimum design of an active micro-mixer using the Kriging metamodel
In this microfluidic application,microfluidic analysis of an active micro-mixer with an oscillating stirrer in a straight microchannel was performed. The effects of molecular diffusion and disturbance by the stirrer for mixing were examined.The mixing was calculated using the Lattice Boltzmann method incorporating a D2Q9 model. In this study,a time-averaged mixing index was used to estimate the mixing performance of a time-dependent flow. The results revealed that the mixer,using an oscillating stirrer,was much more enhanced and stabilized. In order to predict an effective mixing index,an optimum design for an active micro-mixer with an oscillating stirrer was performed based on the successive Kriging method. Parameters for the optimal design were determined to be the reduced frequency,and the length and the rotation angle of the stirrer. Optimal Latin hypercube sampling was used to sample data. The optimal design parameters were determined to be 1.3934,0.7233D and ±47.9°,respectively. These parameter values in the optimal design improved the mixing index of the initial design by up to 36.15％.
Micro-mixer Lattice boltzmann method Optimal Latin hypercube sampling Kriging metamodel Sequential sampling
J.Y.Park J.S.Yu M.K.Im Y.K.Oh J.Y.Park Y.D.Kim J.S.Maeng S.Y.Han
Department of Mechanical Engineering,Hanyang University,17 Haengdang-Dong,Seungdong-Gu,Seoul,Korea School of Mechanical Engineering,Hanyang University,17 Haengdang-Dong,Seungdong-Gu,Seoul,Korea
国际会议
Fracture Mechanics and Applications 2008(国际断裂力学2008年年会)(FM2008)
杭州
英文
85-90
2008-10-31（万方平台首次上网日期，不代表论文的发表时间）