Correlating the Ultrasonic Thrust Force with Acoustic Streaming Velocity
Author(s)Tan, Alfred C. H.; Hover, Franz S.
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The UltraSonic Thruster (UST) is an actuator which employs a piezoelectric transducer to generate a highly directive ultrasonic wave so as to produce bulk fluid movement. This streaming phenomenon can be utilized underwater for thrusting or maneuvering purposes in marine applications, and particularly at very small scale. We make a new connection between fluid flow and forces, establishing a specific formula for estimating overall thrust from the velocity field. Using Particle Image Velocimetry (PIV) and force measurements, we confirmed the result, with an error of about five percent in several tests. The use of PIV for characterizing UST properties is considerably richer than measuring thrust or acoustic intensity alone, and could lead to new insights during the design process.
DepartmentMassachusetts Institute of Technology. Department of Mechanical Engineering
2009 IEEE International Ultrasonics Symposium (IUS)
Institute of Electrical and Electronics Engineers
Tan, A.C.H., and F.S. Hover. “Correlating the Ultrasonic Thrust Force with Acoustic Streaming Velocity.” Ultrasonics Symposium (IUS), 2009 IEEE International. 2009. 2627-2630. ©2010 IEEE.
Final published version
INSPEC Accession Number: 11226544