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요약정보
入水参数对航行体亚音速入水过程影响的数值研究 / Numerical Study on Effect of Motion Parameters on Subsonic Water Entry of Vehicle
Resource Type
Academic Journal
Authors
孙士明
;
刘广涛
;
颜开
;
王志
;
SUN Shiming
;
LIU Guangtao
;
YAN Kai
;
Wang Zhi
Source
中国造船 / Shipbuilding of China
. 64(1):1-12
Subject
流体力学
入水
空泡
水中弹道
Language
Chinese
ISSN
1000-4882
Online Access
Scopus
Find it @ DONGA
초록
基于CFD方法,求解轴对称航行体亚音速入水过程流场的非定常RANS方程,探讨航行体入水速度、入水角和攻角等参数对入水过程流体动力、运动姿态及空泡形态的影响.研究表明:(1)入水速度对入水冲击载荷有显著影响,而且影响入水空泡的长度;(2)入水角主要影响入水冲击阶段的流体动力,对于不同的入水角,在相同的入水距离时,航行体空泡形态除自由面附近外基本保持一致;(3)入水攻角会加剧航行体的姿态变化,严重影响空泡形态;(4)自由面附近的空泡形态受气体流动及压力变化的影响,但入水2倍弹长距离之后的空泡形态受自由面影响较小,可应用理论公式快速计算空泡形态.论文研究成果可为高亚音速入水降载研究提供参考.
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