空化器出水非定常垂直空泡的研究

陈玮琪; 王宝寿; 颜开; 易淑群

doi:10.6052/0459-1879-12-164

空化器出水非定常垂直空泡的研究

doi: 10.6052/0459-1879-12-164

中国船舶科学研究中心, 江苏无锡214082

基金项目: 水动力学重点实验室基金资助项目(9140C220204110C2203).

详细信息

通讯作者:
陈玮琪

中图分类号: O35
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- 被引次数: 0
出版历程
- 收稿日期: 2012-05-31
- 修回日期: 2012-09-12
- 刊出日期: 2013-01-18

STUDY ON THE UNSTEADY VERTICAL CAVITY OF THE EXIT-WATER CAVITOR

China Ship Scientific Research Center, Jiangsu Wuxi 214082, China

Funds: The project was supported by the Foundation of Science and Technology on Hydrodynamics Laboratory (9140C220204110C2203).

摘要

摘要: 对空化器朝水面高速运动产生的非定常垂直空泡进行了理论研究. 建立了受水面和重力影响下的水下垂直空泡长度变化数学方程, 从方程中导出了非定常垂直空泡长度计算公式, 利用公式计算了空化器出水后空泡从脱落、收缩到溃灭的时间. 对带空化器的航行体, 公式还可以计算脱落空泡溃灭高压作用在航行体上的位置, 最后给出了避免溃灭高压作用在航行体上的条件和判据.
- 空泡 /
- 空泡溃灭 /
- 时滞微分方程 /
- 出水
Abstract: The unsteady vertical cavity produced by the underwater cavitator moving rapidly towards the water surface is investigated theoretically. The mathematical model of the unsteady vertical cavity under water is presented; the formula of the vertical cavity length influenced by the gravity and water surface is derived, and the life span of cavity shedding from exit-water cavitator is also obtained from the formula. For the underwater body with cavitator, the acting position in the body of the high-pressure produced by the collapsed cavity is also calculated by the formula; moreover, the condition and criterion of keeping the underwater body from collapse high-pressure is presented.
- cavity /
- cavity collapse /
- delay dierential equations (DDEs) /
- exit water

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参考文献(16)

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