Numerical investigation of mixing performance in microchannel T-junction with wavy structure

Solehati, Nita; Bae, Joonsoo; Sasmito, Agus P.

doi:10.1016/j.compfluid.2014.03.003

Cited by 90 publications

(42 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The use of microfluidic devices permit a reduction in the size and cost of laboratory equipment, diminishing the consumption of specimens and increasing the speed and reliability of analysis (Solehati, Bae, & Sasmito, 2014). Micromixers are broadly applied in various industrial processes such as polymer mixing, chemical reaction and food processing, in cosmetics and pharmaceutics, and also in waste-water treatment (Alam, Afzal, & Kim, 2014;Hossain, Husain, & Kim, 2011;Meijer, Singh, & Patrick, 2012).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical study of fluid mixing at different inlet flow-rate ratios in Tear-drop and Chain micromixers compared to a new H-C passive micromixer

Viktorov

Mahmud

Visconte

2016

Engineering Applications of Computational Fluid Mechanics

View full text Add to dashboard Cite

A new split and recombine (SAR) passive micromixer, namely the H-C mixer, is presented. The performance of the micromixer is analyzed numerically at Reynolds numbers up to 100, varying the inlet flow-rate ratio. In order to validate the numerical model, tests for an inlet flow-rate ratio of 1 were carried out on the new H-C micromixer along with the established Tear-drop and Chain micromixers for comparison, and good correspondence was found between the differently obtained data. Contrary to the Tear-drop and Chain micromixers, the H-C micromixer exhibited a mixing efficiency greater than 90% independent of Reynolds numbers. In particular, no noticeable dependence on inlet flowrate ratio was observed. Furthermore, the pressure drop along the H-C mixer was found to be lower than those along the already known mixers. ARTICLE HISTORY

show abstract

Section: Introductionmentioning

confidence: 99%

“…Reducing the pressure drop in the device would reduce the production cost; moreover, a high mixing efficiency is crucial for fast chemical reactions (Solehati et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Numerical study of fluid mixing at different inlet flow-rate ratios in Tear-drop and Chain micromixers compared to a new H-C passive micromixer

Viktorov

Mahmud

Visconte

2016

Engineering Applications of Computational Fluid Mechanics

View full text Add to dashboard Cite

show abstract

“…In the case of passive mixer, the mixing enhancement can be achieved by carefully designing the channel so as to create vortices and disturb the flow stability which, in turn, leads to the chaotic flow regime. As a consequence, the interfacial area among fluid segments is increased, reducing the diffusion length for heat and mass transport without any additional equipment or energy added to the system [7]. Passive micromixers are less expensive, easy to manufacture and maintain.…”

Section: Introductionmentioning

confidence: 99%

“…Low pressure drop is very crucial for industrial application. Good mixing efficiency is particularly suited for fast complex chemical reactions, where the reaction yields are strongly affected by mixing quality [7]. Degree of mixing can be achieved directly including experimentally [8] and numerically [9]; indirect method includes Poincare section analysis [10] and residence time distribution (RTD) [11].…”

Section: Introductionmentioning

confidence: 99%

Computational Design and Experimental Validation of SAR Mixers

2016

View full text Add to dashboard Cite

Abstract. In this study, two novel split and recombine (SAR) 'H-C' and 'Y-Y' micromixers along with a known SAR 'Chain' mixer are presented. The efficiency and pressure drop at Reynolds numbers (Re) up to 100 were investigated numerically as well as experimentally. Numerical and experimental values of mixing efficiency and pressure drop coincide considerably, which validate the numerical model. Results show that the mixing efficiency of the Chain mixer is good only at Re≥50 and the pressure drop is relatively high, whereas the H-C and the Y-Y mixers give a mixing efficiency higher than 90% over all the range of Reynolds numbers examined and their energy requirement is less than that of the Chain mixer. Furthermore, numerical residence time distribution (RTD) was explored, which successfully predicts the experimental results.

show abstract

“…The diminutive scale of the flow channels in microfluidic systems increases the surface to volume ratio and is, therefore, advantageous in many applications. Microfluidic technology provides the possibility of replacing large conventional laboratory equipment, reducing costs, decreasing consumption, making the analysis faster and increasing safety and reliability [1]. These characteristics explain the exponential increase of research on micromixers in various fields.…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of Passive Micromixers at a Wide Range of Reynolds Numbers

2015

View full text Add to dashboard Cite

Two novel passive micromixers, denoted as the Y-Y mixer and the H-C mixer, based on split-and-recombine (SAR) principle are studied both experimentally and numerically over Reynolds numbers ranging from 1 to 100. An image analysis technique was used to evaluate mixture homogeneity at four target areas. Numerical simulations were found to be a useful support for the design phase, since a general idea of mixing of fluids can be inferred from the segregation or the distribution of path lines. Comparison with a well-known mixer, the Tear-drop one, was also performed. Over the examined range of Reynolds numbers 1 ď Re ď 100, the Y-Y and H-C mixers showed at their exit an almost flat mixing index characteristic, with a mixing efficiency higher than 90%; conversely the Tear-drop mixer showed a relevant decrease of efficiency at mid-range. Furthermore, the Y-Y and the H-C showed significantly less pressure drop than the Tear-drop mixer.

show abstract

Numerical investigation of mixing performance in microchannel T-junction with wavy structure

Cited by 90 publications

References 34 publications

Numerical study of fluid mixing at different inlet flow-rate ratios in Tear-drop and Chain micromixers compared to a new H-C passive micromixer

Numerical study of fluid mixing at different inlet flow-rate ratios in Tear-drop and Chain micromixers compared to a new H-C passive micromixer

Computational Design and Experimental Validation of SAR Mixers

Comparative Analysis of Passive Micromixers at a Wide Range of Reynolds Numbers

Contact Info

Product

Resources

About