[1]易文俊,李月洁,王中原,等.小攻角下水下高速射弹的空泡形态特性[J].南京理工大学学报(自然科学版),2008,(04):464-467.
 YI Wen-jun,LI Yue-jie,WANG Zhong-yuan,et al.Characteristics of Cavity Shape for Underwater High-speed Projectile at Small Attack Angle[J].Journal of Nanjing University of Science and Technology,2008,(04):464-467.
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小攻角下水下高速射弹的空泡形态特性
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
期数:
2008年04期
页码:
464-467
栏目:
出版日期:
2008-08-30

文章信息/Info

Title:
Characteristics of Cavity Shape for Underwater High-speed Projectile at Small Attack Angle
作者:
易文俊;李月洁;王中原;熊天红;钱吉胜;
1. 南京理工大学弹道国防科技重点实验室, 江苏南京210094; 2. 海军装备部驻沈阳军事代表局, 辽宁沈阳110031
Author(s):
YI Wen-jun1LI Yue-jie2WANG Zhong-yuan1XIONG Tian-hong1QIAN Ji-sheng1
1.National Key Laboratory of Transient Physics,NUST,Nanjing 210094,China;2.Shenyang Military Representative Bureau,Naval Armament Department,Shenyang 110031,China
关键词:
超高速射弹 超空泡 空泡形态 攻角
Keywords:
supervelocity projectiles supercavitation cavity shape angle of attack
分类号:
E925.2
摘要:
基于流体计算软件Fluent,在小攻角小空泡数下对高速射弹形成自然超空泡的空泡形态特性进行了数值仿真研究。采用二维求解器计算了某口径高速射弹超空泡流形态,并与SCAV软件计算结果进行了比较分析,二者吻合较好,验证了计算模型与参数选择的正确性;采用三维求解器对非零攻角下高速射弹的超空泡流动特性进行了模拟,给出了射弹的超空泡轮廓和射弹表面的空泡厚度分布曲线,分析了小攻角对高速射弹空泡形态特性的影响规律,攻角严重影响超空泡的对称性。研究结果为进一步研究水下高速射弹的水动力特性和弹道特性等问题提供了理论基础。
Abstract:
Natural supercavity shape characteristics of a high-speed projectile at zero angel of attack and small cavitation number are numberically simulated with Fluent software.Supercavitating flow at zero angel of attack around underwater high speed projectile is investigated by numerical simulation based on a two-dimensional solver and the numerical simulation results fit well with the results of the SCVA software.According to the model,simulation of the supercavitating flow at non-zero angle of attack is investigated with a three-dimensional solver.Supercavity contour of the projectile and cavitation thickness along the projectile superface are presented,and the influence of small angle of attack on cavity shape around underwater projectile are analyzed.Symmetry of cavitation contour of the projectile is changed at non-zero attack angle.This research offers theorical reference for the study of hydrodynamics and ballistic performance of underwater projectiles.

参考文献/References:

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相似文献/References:

[1]易文俊,李铁鹏,熊天红,等.水下高速航行体自然超空泡形态特性仿真研究[J].南京理工大学学报(自然科学版),2009,(03):330.
 YI Wen-jun,LI Tie-peng,XIONG Tian-hong,et al.Simulation on Natural Supercavitation Characteristics of Underwater High-speed Vehicle[J].Journal of Nanjing University of Science and Technology,2009,(04):330.
[2]熊天红,张 木,易文俊,等.小空化数下带尾翼射弹超空泡减阻试验与数值模拟[J].南京理工大学学报(自然科学版),2013,37(02):244.
 Xiong Tianhong,Zhang Mu,Yi Wenjun,et al.Experimental and numerical investigation of supercavity drag reduction of wing-projectiles under small cavitation number[J].Journal of Nanjing University of Science and Technology,2013,37(04):244.

备注/Memo

备注/Memo:
基金项目: 国防重点实验室基金 ?? 作者简介: 易文俊( 1970- ), 男, 湖南宁乡人, 副研究员, 主要研究方向: 超空泡数值仿真与试验研究, E-mail: w jy @ mail. n just. edu. cn。
更新日期/Last Update: 2012-12-19