Visualization of Acoustically Induced Cavitation Bubbles and Microjets with the Aid of High-Speed Camera
نویسندگان
چکیده
Water model experiments in an acrylic resin vessel have been performed to visualize evolution, growth, coalescence, vibration, and clustering of multi-cavitation bubbles in a standing plain wave at the frequency of about 42 kHz by using high-speed camera. Their dynamic behaviors are phenomenologically discussed in relation to the ultrasound field specified. Another experiment has also been carried out to visualize microjets that appeared near around a water/tetralin interface. It was found from the video-camera photos that many microjets were strongly ejected in the random directions from around the interface with a spreading angle. These jets results an intensified microand macromixing of liquids.
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