| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Effects of Transverse Temperature Gradient on the Rotor Velocity in an Ultrasonic Motor |
| Li-Ping Cheng**, Shu-Yi Zhang, Xiao-Dong Xu |
Lab of Modern Acoustics, Institute of Acoustics, Nanjing University, Nanjing 210093
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| Cite this article: |
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Li-Ping Cheng, Shu-Yi Zhang, Xiao-Dong Xu 2016 Chin. Phys. Lett. 33 014301 |
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Abstract As a result of the nonlinear effect, acoustic streaming has been widely used for increasing the transport coefficient or driving a rotor, for example, in resonant cavities and non-contact ultrasonic motors. It has been demonstrated by experiments that a temperature gradient transverse to the wave propagating direction can significantly increase the velocity of the streaming flows in resonant cavities. To check whether the transverse temperature gradient can also increase the working velocity of acoustic streaming-driven motors, we investigate this issue by numerically solving the hydrodynamic equations. It is found that the velocity of the rotor only weakly depends on the transverse temperature gradient, e.g., even with a temperature difference of 40$^{\circ}\!$C between the rotor and the stator, the velocity increases only $\sim$8.8%.
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Received: 09 October 2015
Published: 29 January 2016
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| PACS: |
43.25.Nm
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(Acoustic streaming)
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43.35.-c
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(Ultrasonics, quantum acoustics, and physical effects of sound)
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43.55.Ka
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(Computer simulation of acoustics in enclosures, modeling)
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