摘要
空化是一种自然现象,从认识"滴水穿石"起,人们就将注意力集中在源于空化的各种损伤过程上。由于对空泡生成、坍缩、溃灭,直至形成微激波、微射流的机理尚不清楚,历经百余年的研究,仍然没有形成有效解决空蚀损伤、空蚀噪声等问题的关键技术。另一方面,空泡坍缩、溃灭过程所形成的极端物理、化学、力学环境、空泡内部物质的特殊物理化学状态及其转化过程,可为寻找自然界深层次规律的科学研究提供新的途径,形成的关键技术将为国民经济与国家安全的发展做出巨大贡献,并将最终造福于人类。
Cavitation is a natural phenomenon.Since it was knew that water constantly dripping wears holes in stone,people have been focusing on all kinds of damages induced by cavitation erosion.Because the mechanism on cavitation,bubble collapse,microwave and microjet induced by bubble collapse is not completely understood,the key technique effectively prohibiting cavitation erosion and its noise has not been arrived at though the relative study has been done for about a century.At the same time,extreme physical,chemical,mechanical condition induced by bubble collapse,special physical and chemical status and transformation of material in the extreme condition provide a new way for further study on natural laws.Finally,some key techniques should be proposed because of this study and they will make great contributions to national economy and safety,and bring benefits to human being.
出处
《中国基础科学》
2010年第6期3-7,共5页
China Basic Science
关键词
空化
空蚀
微激波
微射流
声化学
超声医学
中子聚变
cavitation
cavitation erosion
microwave
microjet
sonic chemistry
ultrasound in medicine
neutron fusion reaction
