Motionless mixers have found a large range of applications, including blending, reaction, dispersion, heat transfer and mass transfer. Understanding the mixing processes that occur in these diverse systems is essential for predicting many aspects of practical importance. The objective of this study is to perform the experimental investigations of mixing characteristics for three different motionless mixers. The red color dye tracer was mixed in the main stream of green hair styling gel, and then the mixing efficiency was quantified by calculating the percentage area concentration of red color at the outlet cross section using a digital image processing technique. In the Sulzer SMX and YHC mixer, a single element mixes the fluid nearly in two dimensions, and three-dimensional mixing is accomplished by the next elements aligned at 90o to their former one. In the Sulzer SMX mixer, the flow appears to be globally well mixed after 5 elements, while in the YHC and YNU mixers, it is necessary to globally well mix more than 1 and 2 elements.
This is a preview of subscription content, log in to check access.
Buy single article
Instant access to the full article PDF.
Price includes VAT for USA
Subscribe to journal
Immediate online access to all issues from 2019. Subscription will auto renew annually.
This is the net price. Taxes to be calculated in checkout.
Bauman, I., Solid-Solid Mixing with Static Mixers, Chem. Biochem. Eng. Q., 15 (2001), 159–165.
Boss, J. and Czastkiewicz, W., Principles of Scale-Up for Laminar Mixing Processes of Newtonian Fluids in Static Mixers, Int. Chem. Eng., 22 (1982), 362–367.
Hobbs, D. M., Characterization of a Kenics Static Mixer under Laminar Flow Conditions, (1997), Ph.D Thesis, The State University of NewJersey.
Junker, B. H., Seamans, T. C., Ramsubramanyan, K., Aunins, L. and Adrian R. J., Cultivation of Attenuated Hepatitis a Virus Antigen in a Titanium Static Mixer Reactor, Biotechnology & Bioengineering, 44 (1994), 1315–1324.
Kemblowski, Z. and Pustelnik, P., Residence Time Distribution of a Power-Law Fluid in Kenics Static Mixers, Chem. Eng. Sci., 43-3 (1988), 473–478.
Middleman, S., Fundamentals of Polymer Processing, (1977), McGraw-Hill, New York.
Nauman, E. B., On Residence Time and Trajectory Calculations in Motionless Mixers, Chem. Eng. J., 47 (1991), 141–148.
Pahl, M. H. and Muschelknautz, E., Static Mixers and Their Application, Int. Chem. Eng., 22-2 (1982), 197–205.
Pustelnik, P., Investigation of Residence Time Distribution in Kenics Static Mixers, Chem. Eng. Pro., 102 (1986), 147–154.
OPTIMAS User Guide, Media Cybernetics, (1999).
Shah, N. F. and Kale, D. D., Pressure Drop for Laminar Flow of Non-Newtonian Fluids in Static Mixers, Chem. Eng. Sci., 46-3 (1991), 2159–2161.
Sir, J. and Lecjaks, Z, Pressure Drop and Homogenization Efficiency of a Motionless Mixer, Chem. Eng. Commun., 16 (1982), 325–334.
Hei-Cheon Yang: He received his Ph.D (Eng) degree in Mechanical Engineering in 1994 from Chungang University in Seoul. He has been working as an associate professor in Chonnam National University, School of Mechanical and Automotive Engineering since 1997. His research interests are quantitative visualization, design and performance test of motionless mixers and thermal reactor, computational fluid dynamics.
About this article
Cite this article
Yang, H.C. Mixing characteristics of motionless mixers. J Vis 10, 83–89 (2007). https://doi.org/10.1007/BF03181807
- Motionless Mixer
- Mixing Element
- Mixing Characteristics
- Image Processing Technique