Acoustic Focusing of particles on a large scale

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SUMMARY

This discussion focuses on the application of acoustic focusing to guide powdered particles within an 11mm inner diameter tube using a standard speaker. The user aims to establish a standing wave with an acoustic waveguide aligned perpendicularly to the tube's axis, ensuring the node is positioned at the tube's center. The primary challenge identified is calculating the necessary amplitude of the acoustic wave to effectively manipulate the particle trajectory towards the tube's axis.

PREREQUISITES
  • Understanding of acoustic wave propagation
  • Familiarity with particle dynamics in fluid flows
  • Knowledge of standing wave formation
  • Experience with acoustic waveguides and their applications
NEXT STEPS
  • Research the principles of acoustic focusing in larger scales
  • Learn about the design and implementation of acoustic waveguides
  • Investigate methods for calculating wave amplitude in particle manipulation
  • Explore the use of standard speakers for acoustic applications
USEFUL FOR

Researchers and engineers in the fields of particle dynamics, acoustic engineering, and those developing systems for material handling and manipulation using acoustic methods.

taylaron
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Greetings PFers,
I'm working on a project where I need to focus powdered that is being blown through a tube. I would like to discuss the option of using acoustic focusing to guide the particles to the axis of the tube to prevent the particles from contacting the tube inside diameter.

There is plenty of research on acoustic focusing on very small scales, but I'm interested in using a standard speaker to focus particles inside an 11mm ID cylinder instead of the traditional piezo element.

I want to mount a acoustic waveguide perpendicular to the axis of the carrier gas and establish a standing wave where the node is aligned with the axis of the tube.

The difficulty I'm having is calculating the amplitude of the wave necessary to move the X axis of the particle trajectory towards the axis of the tube.

I appreciate any help I can get.

kind regards.
 

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Thoughts anybody?
 

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