Acoustic Focusing of particles on a large scale

AI Thread Summary
The discussion centers on using acoustic focusing to guide powdered particles through a tube, specifically aiming to prevent contact with the tube's interior. The project seeks to utilize a standard speaker instead of a piezo element for focusing within an 11mm ID cylinder. The goal is to create a standing wave with a waveguide aligned perpendicularly to the carrier gas flow, ensuring the node is at the tube's axis. A key challenge mentioned is calculating the required amplitude of the acoustic wave to effectively direct the particles toward the tube's center. Assistance and insights on this topic are requested.
taylaron
Gold Member
Messages
391
Reaction score
1
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.
 

Attachments

  • P1030219.jpg
    P1030219.jpg
    24.9 KB · Views: 493
Physics news on Phys.org
Thoughts anybody?
 
Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

So here is the motional EMF formula. Now I understand the standard Faraday paradox that an axis symmetric field source (like a speaker motor ring magnet) has a magnetic field that is frame invariant under rotation around axis of symmetry. The field is static whether you rotate the magnet or not. So far so good. What puzzles me is this , there is a term average magnetic flux or "azimuthal mean" , this term describes the average magnetic field through the area swept by the rotating Faraday...
View full post »

Similar threads

Focused Acoustic Shock Wave Device for Generating High Pressures
Replies
1
Views
2K
Understanding Standing Waves in Open Tubes
Replies
1
Views
2K
Flow of air through an open tube with a balloon
Replies
9
Views
3K
Airborne particle focusing in heated chamber using thermal emission?
Replies
13
Views
3K
Is the Earth Harp real (acoustically)?
Replies
40
Views
47K
Gang of four-Lisi, Loll, Reuter, Rovelli-make trouble for stringery
Replies
21
Views
12K

Hot Threads

Recent Insights

Back
Top