Ultrasonic Acoustic Cavitation Effect Explained

Globatech Australia is the industry leader in Ultrasonic Bio-Fouling technology. Producing protection systems in multiple industries and manufacturing all technology in house.

Pipe Networks and Industry

Pipe networks, heat exchangers, silt prevention, internal pipe cleaning, active system maintenance and cleaning while running.

Marine, Small to Large

Protection of all marine sectors from pleasure craft to large maritime. Hulls, running gear, keels, rudders, structures, sea chests, strainers and more.

HVAC & Industry Applications

HVAC Industry. Algal control in cooling towers, heat exchangers, pipe networks, water bodies and more.

Ultrasonic Acoustic Cavitation – Ultrasonication

The H2oBioSonic Bio Fouling Protection Systems utilize advanced variable acoustic cavitation at a microscopic level through the ultrasound frequency range, typically between 20-200kHz depending on the application.

Acoustic cavitation (Ultrasonication) is produced by ultrasonic sound waves in a liquid due to pressure variations.
Sound waves propagate into the liquid resulting in an alternating high-pressure(compression) and low-pressure (rarefaction) cycles. During rarefaction, high-intensity sonic waves create small vacuum bubbles or voids within the liquid. These bubbles then collapse violently (cavitation) during the compression phase of the sound wave creating very high local pressure and temperature at a microscopic level. As the frequency used is between 20-200kHz the rate of these bubble implosions is at 20,000 – 200,000 times per second and each sound wave producing potentially millions of bubbles.

The Effects Explained 

The high compressibility of the imploding bubble means that much potential energy is released from the ultrasonication. This release of energy has some very important properties.


  • Disrupts or destroys microscopic algae and microorganisms, providing a sterilizinge ect.

  • Provides a microscopic scrubbing e ect which can break down solids allowing for cleaning and maintenance of internal structures.