scholarly journals A computational modeling approach of the jet-like acoustic streaming and heat generation induced by low frequency high power ultrasonic horn reactors

2011 ◽  
Vol 18 (6) ◽  
pp. 1263-1273 ◽  
Author(s):  
Francisco Javier Trujillo ◽  
Kai Knoerzer
Keyword(s):  
Computational Modeling ◽  
Heat Generation ◽  
High Power ◽  
Acoustic Streaming ◽  
Low Frequency ◽  
Modeling Approach ◽  
Power Ultrasonic

scholarly journals Piezoelectric Energy Harvesting with an Ultrasonic Vibration Source

Actuators ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 8
Author(s):  
Tao Li ◽  
Pooi Lee
Keyword(s):  
Energy Harvesting ◽  
High Power ◽  
High Frequency ◽  
Energy Harvester ◽  
Impedance Matching ◽  
Low Frequency ◽  
Vibration Source ◽  
Piezoelectric Energy ◽  
Power Ultrasonic ◽  
Ultrasonic Cutting

A piezoelectric energy harvester was developed in this paper. It is actuated by the vibration leakage from the nodal position of a high-power ultrasonic cutting transducer. The harvester was excited at a low displacement amplitude (0.73 µmpp). However, its operation frequency is quite high and reaches the ultrasonic range (24.4 kHz). Compared with another low frequency harvester (66 Hz), both theoretical and experimental results proved that the advantages of this high frequency harvester include (i) high current generation capability (up to 20 mApp compared to 1.3 mApp of the 66 Hz transducer) and (ii) low impedance matching resistance (500 Ω in contrast to 50 kΩ of the 66 Hz transducer). This energy harvester can be applied either in sensing, or vibration controlling, or simply energy harvesting in a high-power ultrasonic system.

scholarly journals A dual de-icing system for wind turbine blades combining high-power ultrasonic guided waves and low-frequency forced vibrations

2015 ◽  
Vol 83 ◽  
pp. 859-870 ◽  
Author(s):  
Hossein Habibi ◽  
Liang Cheng ◽  
Haitao Zheng ◽  
Vassilios Kappatos ◽  
Cem Selcuk ◽  
...  
Keyword(s):  
Wind Turbine ◽  
High Power ◽  
Guided Waves ◽  
Turbine Blades ◽  
Low Frequency ◽  
Forced Vibrations ◽  
Ultrasonic Guided Waves ◽  
Wind Turbine Blades ◽  
Power Ultrasonic
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