Optimization of microscale vortex generators in a microchannel using advanced response surface method

• Published in: International journal of heat and mass transfer Vol. 54; no. 1; pp. 118 - 125
• Main Authors: Kim, Beom Seok, Kwak, Bong Seop, Shin, Sangwoo, Lee, Sanghoon, Kim, Kyung Min, Jung, Hyo-Il, Cho, Hyung Hee
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 15.01.2011; Elsevier
• Subjects: Applied fluid mechanics; Approximation; Channels; Exact sciences and technology; Fluid dynamics; Fluidics; Fundamental areas of phenomenology (including applications); Mass transfer; Mass transport; Microchannels; Micromixer; Optimization; Physics; Response surface method; Response surfaces; Rib turbulator; Variability; Vortex generators; Mass transport; Micromixer; Response surface method; Rib turbulator; Optimization; Rectangular pipe; Digital simulation; Geometrical configuration; Rib; Response surface methodology; Mixers; Micromixing; Microchannel; Vortex generator; Modelling; Microstructure; Performance; T shape
• ISSN: 0017-9310; 1879-2189
• DOI: 10.1016/j.ijheatmasstransfer.2010.09.061

Mixing based on mass diffusion and advective flow at low Reynolds number is important on design of microscale vortex generators. We studied on the optimization of micromixer for the improvement of mass transport using an advanced response surface method to be closely approximate the real map of mixing performance. We considered four rib geometries simultaneously; rib angle, rib height, rib width, and rib spacing. The optimized microchannel was occurred at a micromixer configuration where θ, d/ h, a/ d, and b/ d were 35.6°, 0.7, 0.127, and 1.10, respectively. The channel length to obtain the mixing uniformity over 95% was 1344 μm.