| 空化器出水非定常垂直空泡的研究 |
| |
| 引用本文： | 陈玮琪,王宝寿,颜开,易淑群.空化器出水非定常垂直空泡的研究[J].力学学报,2013,45(1):76-82. |
| |
| 作者姓名： | 陈玮琪 王宝寿 颜开 易淑群 |
| |
| 作者单位： | 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)~~ |
| |
| 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.
|
| 关 键 词： | 空泡 空泡溃灭 时滞微分方程 出水 |
| 收稿时间： | 2012-05-31 |
| 修稿时间： | 2012-09-12 |
STUDY ON THE UNSTEADY VERTICAL CAVITY OF THE EXIT-WATER CAVITOR |
| |
| Chen Weiqi,Wang Baoshou Yan Kai Yi Shuqun.STUDY ON THE UNSTEADY VERTICAL CAVITY OF THE EXIT-WATER CAVITOR[J].chinese journal of theoretical and applied mechanics,2013,45(1):76-82. |
| |
| Authors: | Chen Weiqi Wang Baoshou Yan Kai Yi Shuqun |
| |
| Institution: | China Ship Scientific Research Center, Jiangsu Wuxi 214082, China |
| |
| 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. |
| |
| Keywords: | cavity|cavity collapse|delay di erential equations (DDEs)|exit water |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《力学学报》浏览原始摘要信息 |
| 点击此处可从《力学学报》下载免费的PDF全文 |
|
