Acoustofluidics 13: Analysis of acoustic streaming by perturbation methods

Area of Science:

• Acoustofluidics
• Microfluidics
• Fluid Dynamics

Background:

• Acoustic streaming is a steady flow generated by the absorption of oscillatory acoustic fields.
• This phenomenon can occur via attenuation (quartz wind) or interaction with boundaries.
• It can also be induced by oscillating objects in fluids or vibrating fluid enclosures.

Purpose of the Study:

• To present the phenomenon of acoustic streaming from an analytical perspective.
• To develop perturbation methods for analyzing acoustic streaming flows.
• To focus on boundary-interaction-generated streaming for microfluidic applications.

Main Methods:

• Analytical treatment of acoustic streaming.
• Application of perturbation methods for flow analysis.
• Focus on one- and two-dimensional problems for illustrative examples.

Main Results:

• Demonstration of analytical techniques for understanding acoustic streaming.
• Explanation of how acoustic streaming is generated in microfluidic systems.
• Emphasis on practical applications of acoustic streaming for particle manipulation.

Conclusions:

• Analytical methods provide a framework for understanding acoustic streaming.
• Acoustic streaming is a key phenomenon in acoustofluidics for microfluidic applications.
• Further exploration of analytical techniques can advance cell and particle manipulation in microfluidics.