This study presents the development of a technique to directly investigate the effect of ultrasonic waves at 25 and 68 kHz and 100, 250, and 500 W on the viscosity of paraffin, synthetic oil, and kerosene. Experiments were performed under both controlled and uncontrolled temperature conditions in a smooth capillary tube. The results indicate that the viscosity of the liquids decreases upon exposure to ultrasound and may be attributed to induced heat generation and cavitation within the fluid. The specifics of ultrasound frequency, power, and temperature on viscosity reduction are discussed and interpreted.
The authors would also like to extend their appreciation to the Faculty of Chemical Engineering at Universiti Teknologi MARA, Shah Alam, Malaysia and Faculty of Petroleum and Renewable Energy Engineering at Universiti Teknologi Malaysia, Johor, Malaysia for the provision of the laboratory facilities necessary for completing this work.
This research was partly funded by a UiTM Research Excellence Fund (Grant No. 600-RMI/DANA 5/3/RIF 548/2012) and we gratefully acknowledge the support provided.
- smooth capillary tube