The Physical and Chemical Effects of Ultrasound
The Physical and Chemical Effects of Ultrasound
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DOI：
10.1007/978-1-4419-7472-3_1
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发表时间：
2011-01-01
期刊：
影响因子：
--
通讯作者：
Ashokkumar, Muthupandian
中科院分区：
文献类型：
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作者：
Kentish, Sandra;Ashokkumar, Muthupandian
超声波是指人类听力范围以上的声波。超声波的物理效应包括与空化气泡破裂、微喷射以及空化微气泡向驻波场的压力波腹的流动运动相关联的湍流。这些物理效应在流体/固体和流体/流体边界附近最强，这意味着超声波在增强这种边界层内的传热和传质方面非常有效。化学效应产生于气泡瞬时空泡溃灭过程中自由基的产生。
Ultrasound refers to sound waves above the human hearing range. The physical effects of ultrasound include the turbulence associated with cavitational bubble collapse, microjetting, and the streaming movement of cavitational microbubbles to the pressure antinodes of a standing wave field. These physical effects are strongest near to fluid/solid and fluid/fluid boundaries, which mean that ultrasound is extremely effective in enhancing heat and mass transfer within such boundary layers. Chemical effects arise from free radical production during transient cavitational collapse of bubbles.