“…1 a, arranged two units (mixing units ⓐ, ⓑ) are placed in pairs, and each unit is rotated at an angle of 90°. The rotation between each unit serves to enhance the mixing performance 27 , 32 . Figure 1 Analysis condition of mixing.…”
Section: Design Of Tilted-wing Continuous Mixer (Twm)mentioning
confidence: 99%
“…In two-fluid mixing, with fluid passing the FWM, the mixing pattern according to CFD in the cross-section of the channel is shown at ①, ②, ③, and ④ in Fig. 2 a 26 , 27 , 32 , 34 . The color of the section means mixing volume fraction, which is the ratio of the volume occupied by each fluid and the volume of the unit mesh.…”
Section: Design Of Tilted-wing Continuous Mixer (Twm)mentioning
confidence: 99%
“…2 a and recombine during rotation. Likewise, while the mixture passes through the second FWM, the split and recombination of the mixture occur by generating four folding axes 17 , 25 , 27 , 32 .…”
Section: Design Of Tilted-wing Continuous Mixer (Twm)mentioning
confidence: 99%
“…Generally, the mixer consists of several arranged mixing modules 25 – 27 , 39 . Therefore, the arrangement number of the commercial mixing module is selected in consideration of manufacturability and maintenance.…”
Section: Optimization Of the Twm-fwm Modulementioning
confidence: 99%
“…Ghanem et al summarized previous studies and compiled the shape characteristics, mixing principles, and application fields of the LSM 25 . Hirschberg et al performed a shape change to reduce the pressure build-up of the LSM 26 , and Shahbazi et al attempted to optimize the shape of the LSMs using a genetic algorithm 27 .…”
We develop a novel milli-scale mixer (tilted-wings mixing unit, TWM unit) based on the design for additive manufacturing (DfAM). The proposed tilted-wings mixer has basically designed to have three separate wings that split and combine fluids in order to mix together effectively. Its structure is simple for easy fabrication: two major design parameters of angle among three wings and connecting angle between tilted-unit, which are optimized using the computational fluid dynamics (CFD) analysis. From the CFD analysis, we obtain the best-combined mixing module from analyses of various combinations of TWM units for a highly effective mixing ratio. The mixing ratio of three combined units reaches near 100%, which is validated by the experiment and analysis. We believe that the proposed milli-scale mixer can be utilized in diverse chemical continuous mixers and reactors for minimizing of use of chemicals that can pollute the environment.
“…1 a, arranged two units (mixing units ⓐ, ⓑ) are placed in pairs, and each unit is rotated at an angle of 90°. The rotation between each unit serves to enhance the mixing performance 27 , 32 . Figure 1 Analysis condition of mixing.…”
Section: Design Of Tilted-wing Continuous Mixer (Twm)mentioning
confidence: 99%
“…In two-fluid mixing, with fluid passing the FWM, the mixing pattern according to CFD in the cross-section of the channel is shown at ①, ②, ③, and ④ in Fig. 2 a 26 , 27 , 32 , 34 . The color of the section means mixing volume fraction, which is the ratio of the volume occupied by each fluid and the volume of the unit mesh.…”
Section: Design Of Tilted-wing Continuous Mixer (Twm)mentioning
confidence: 99%
“…2 a and recombine during rotation. Likewise, while the mixture passes through the second FWM, the split and recombination of the mixture occur by generating four folding axes 17 , 25 , 27 , 32 .…”
Section: Design Of Tilted-wing Continuous Mixer (Twm)mentioning
confidence: 99%
“…Generally, the mixer consists of several arranged mixing modules 25 – 27 , 39 . Therefore, the arrangement number of the commercial mixing module is selected in consideration of manufacturability and maintenance.…”
Section: Optimization Of the Twm-fwm Modulementioning
confidence: 99%
“…Ghanem et al summarized previous studies and compiled the shape characteristics, mixing principles, and application fields of the LSM 25 . Hirschberg et al performed a shape change to reduce the pressure build-up of the LSM 26 , and Shahbazi et al attempted to optimize the shape of the LSMs using a genetic algorithm 27 .…”
We develop a novel milli-scale mixer (tilted-wings mixing unit, TWM unit) based on the design for additive manufacturing (DfAM). The proposed tilted-wings mixer has basically designed to have three separate wings that split and combine fluids in order to mix together effectively. Its structure is simple for easy fabrication: two major design parameters of angle among three wings and connecting angle between tilted-unit, which are optimized using the computational fluid dynamics (CFD) analysis. From the CFD analysis, we obtain the best-combined mixing module from analyses of various combinations of TWM units for a highly effective mixing ratio. The mixing ratio of three combined units reaches near 100%, which is validated by the experiment and analysis. We believe that the proposed milli-scale mixer can be utilized in diverse chemical continuous mixers and reactors for minimizing of use of chemicals that can pollute the environment.
This report is focused on understanding the mixing performance of Newtonian and non‐Newtonian fluids in an SMX static mixer through computational fluid dynamics (CFD) study in Simcenter STAR‐CCM+. For this, the standard SMX mixer with four mixer elements of radius 26 mm was chosen. The aspect ratio (L/D) was taken as 1. The model constructed was compared using pressure drop ratio values available in literature. First, the design was validated for Newtonian fluid, then for shear‐thinning fluid (non‐Newtonian). Mixing patterns produced through particle tracking approach revealed how blending improved as the fluid moved downstream and interacted with increasing number of mixer elements. A sensitivity study was undertaken to investigate the effect of particle injection mechanism on the mixing process. Two injection methods, vertical and horizontal, were explored to check the influence of injection position on mixing. The results indicate that for the given configuration irrespective of the injection location, at least four mixing elements are needed to achieve good mixing for both Newtonian and shear‐thinning fluids investigated in this study. Statistical reports were used to quantify mixing to understand the mixing behaviour for Newtonian and non‐Newtonian fluids with change in Reynolds number. At high Reynolds number, non‐Newtonian fluids exhibited better mixing abilities. Further, efforts were taken to optimize the various design parameters to produce the most optimum solution with a single mixer element for Newtonian fluid.
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