0
TECHNICAL PAPERS

A Numerical Study of the Global Performance of Two Static Mixers

[+] Author and Article Information
Ramin K. Rahmani1

Department of Mechanical Engineering, The University of Alabama at Birmingham, Birmingham, ALrkhrahmani@yahoo.com

Anahita Ayasoufi

Department of Mechanical Engineering, The University of Alabama at Birmingham, Birmingham, ALaayasoufi@yahoo.com

Theo G. Keith

 NASA Glenn Research Center, Cleveland, OHtheo.g.keith@grc.nasa.gov

1

Corresponding author.

J. Fluids Eng 129(3), 338-349 (Aug 21, 2006) (12 pages) doi:10.1115/1.2427082 History: Received November 21, 2005; Revised August 21, 2006

The use of in-line static mixers has been widely advocated for an important variety of applications, such as continuous mixing, heat and mass transfer processes, and chemical reactions. This paper extends previous studies by the authors on industrial static mixers and illustrates how static mixing processes of single-phase viscous liquids can be numerically simulated. Mixing of Newtonian, shear-thinning, and shear-thickening fluids through static mixer, as well as thermal enhancement by static mixer is studied. Using different measuring tools, the global performance and costs of SMX (Sulzer mixer X) and helical static mixers are studied. It is shown that the SMX mixer manifests a higher performance; however, the required energy to maintain the flow across a SMX mixer is significantly higher.

FIGURES IN THIS ARTICLE
<>
Copyright © 2007 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

Top: Helical static mixer, Bottom: SMX mixer

Grahic Jump Location
Figure 2

Mass flow rate calculated based on Metzner-Reed Reynolds number definition

Grahic Jump Location
Figure 3

Path line of one particle through a six-element helical static mixer

Grahic Jump Location
Figure 4

Particles’ locations at outlet Poincaré section (Helical mixer)

Grahic Jump Location
Figure 5

Particles’ locations at outlet Poincaré section (SMX mixer)

Grahic Jump Location
Figure 6

Velocity field at the first and second helical elements (Top: Re=1, Bottom: Re=100)

Grahic Jump Location
Figure 7

Particles’ locations at outlet (Top: helical mixer, Bottom: SMX mixer)

Grahic Jump Location
Figure 8

Distribution function for laminar flow in a two-element helical static mixer (Δt*=0.01)

Grahic Jump Location
Figure 9

Distribution function for laminar flow in a two-element SMX static mixer (Δt*=0.01)

Grahic Jump Location
Figure 10

Particles’ locations at outlet, Re′=1, n=0.75 (Top: helical mixer, Bottom: SMX mixer)

Grahic Jump Location
Figure 11

Particles’ locations at outlet, Re′=100, n=0.75 (Top: helical mixer, Bottom: SMX mixer)

Grahic Jump Location
Figure 12

Particles’ locations at outlet, Re′=1, n=1.25 (Top: helical mixer, Bottom: SMX mixer)

Grahic Jump Location
Figure 13

Particles’ locations at outlet, Re′=100, n=1.25 (Top: helical mixer, Bottom: SMX mixer)

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In