论文:2019,Vol:37,Issue(1):93-99
引用本文:
邓飞, 熊伟, 周江磊, 郑丹丹, 苏小阳, 唐勇. 双圆盘空化器射弹通气超空泡形态特性实验研究[J]. 西北工业大学学报
DENG Fei, XIONG Wei, ZHOU Jianglei, ZHENG Dandan, SU Xiaoyang, TANG Yong. Experimental Study on Morphological Characteristics of Ventilated Supercavity of Double Disc Cavitator Projectile[J]. Northwestern polytechnical university

双圆盘空化器射弹通气超空泡形态特性实验研究
邓飞, 熊伟, 周江磊, 郑丹丹, 苏小阳, 唐勇
西北工业大学 航海学院, 陕西 西安 710072
摘要:
基于空泡截面独立扩张原理,提出了一种应用于水下射弹的双圆盘空化器。并在高速循环水洞中对此系列双圆盘空化器的空泡生成特性和形态特性进行实验研究。实验通过改变通气流量系数,观察了不同锥顶角下的通气超空泡形态。实验表明,此系列双圆盘空化器诱导生成的通气超空泡存在前盘优先和后盘优先2种空化状态,二者的过渡发生在锥顶角55°附近;生成稳定通气超空泡的临界通气流量系数值与锥顶角呈正相关趋势,前盘和后盘对空泡生成具有相互抑制作用;且通气超空泡的形态特征量不随通气流量系数增加而持续增加,而是存在一个通气流量系数上限值。
关键词:    射弹    双圆盘空化器    通气超空泡    通气流量系数    空泡形态特征量   
Experimental Study on Morphological Characteristics of Ventilated Supercavity of Double Disc Cavitator Projectile
DENG Fei, XIONG Wei, ZHOU Jianglei, ZHENG Dandan, SU Xiaoyang, TANG Yong
School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China
Abstract:
Based on the principle of independence of cavity sections expansion, a double disc cavitator for underwater projectiles is proposed in this paper.The high-speed water tunnel experiment is carried out to study the generation and morphological characteristics of the ventilated supercavity which generated by this series of double disc cavitator.The experiment observed the ventilated supercavity morphology under the different cone angles by changing the ventilation flow coefficient.The experimental results show that there are two kinds of cavitation states:the front disc preferential cavitation and the rear disc preferential cavitation. The transition between these two states occur at a cone angle about 55°.The value of the critical ventilation flow coefficient when generating stable ventilation supercavity has a positive correlation with the cone angle.The front disc and the rear disc of the cavitator have mutual inhibitory effect on the production of ventilated supercavities.And the morphological characteristics of ventilated supercavity do not increase with the increasing of ventilation flow coefficient, but there is an upper limit value of ventilation flow coefficient.
Key words:    projectile    double disc cavitator    ventilated supercavity    ventilation flow coefficient    morphological characteristics of supercavity   
收稿日期: 2018-03-02     修回日期:
DOI: 10.1051/jnwpu/20193710093
基金项目: 国家自然科学基金(51275412)与航空科学基金(2015ZA53012)资助
通讯作者:     Email:
作者简介: 邓飞(1972-),西北工业大学副教授、博士,主要从事超空泡航行体流体动力学研究。
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