Overall
- Language
- English
- Conflict of Interest
- In relation to this article, we declare that there is no conflict of interest.
- Publication history
-
Received January 13, 2025
Revised April 28, 2025
Accepted June 11, 2025
Available online August 25, 2025
-
This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Most Cited
Enhancing Mixing Efficiency: A CFD‑Driven Design of a Helical Pipe‑Type Motionless Mixer with a Kenics‑Type Element
https://doi.org/10.1007/s11814-025-00501-5
Abstract
An approach to process intensification is the use of motionless mixers. Among various motionless mixers, the helical pipetype
motionless mixer has attracted considerable attention. However, its mixing performance can vary greatly depending on
the location of raw material injection. In this study, we developed a helical pipe-type motionless mixer that provides consistent
mixing performance regardless of the injection position of the raw materials. This helical pipe-type motionless mixer has
only one Kenics-type element in the center of the helical pipe. The mixing performance of this design was evaluated using
computational fluid dynamics (CFD). The mixing performance was evaluated using the mixing coefficient Mc defined as
an indicator of mixing efficiency between two liquids. The Mc for the helical pipe-type motionless mixer without elements
has at most 0.5. However, the results showed that the helical pipe-type motionless mixer having more than 4 turns with one
Kenics-type element resulted in M
c ≥ 0.95 in the region where Reynolds number was greater than 30.
