|Table of Contents|

Effect of Cavitator Parameters for Underwater Projectiles on Natural Supercavity

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2008年05期
Page:
545-548
Research Field:
Publishing date:

Info

Title:
Effect of Cavitator Parameters for Underwater Projectiles on Natural Supercavity
Author(s):
XIONG Tian-hongYI Wen-junWU Jun-jiLIU Yi-xin
National Key Laboratory of Transient Physics,NUST,Nanjing 210094,China
Keywords:
projectiles cavitators cavitation number natural supercavity
PACS:
U661.1
DOI:
-
Abstract:
In order to obtain the characteristics of natural supercavity form with perfect reducible drag,and based on homogeneous flow hypothesis,a multi-phase model of natural supercavity flow for underwater projectiles is built using commercial CFD software Fluent 6.0.Supercavity form of several projectile model with disk cavitator and coniform cavitator are calculated under the maximal velocities of 500 m/s and the minimum cavity number of 0.001 55.The influence of headforms,diameters,cone angles,cavitation numbers on the characteristics of natural supercavity form is analyzed.The results show: the size of the natural supercavity is determined by the cavitation numbers and cavitators,the disk cavitator is valid for supercavity formation,and the smaller the diameter and the cone angle of cavitator are,the harder the natural supercavity is formed.

References:

[1]孟庆昌, 张志宏, 刘巨斌. 水下高速航行体超空泡 流动研究进展[ J]. 船海工程, 2006( 6): 26- 29.
[2] 熊永亮, 郜冶, 王革. 水下超空泡航行体减阻能力的 数值研究[ J]. 弹道学报, 2007, 19( 1): 51- 54.
[3] 易文俊, 李月洁, 王中原. 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, 2008, 32 ( 4): 464- 467.
[4] Kuklinsk i R, H enoch C, Castano J. Exper imenta l study o f ventila ted cav ities on dynam ic test m ode l [ A ] . Fourth Interna tiona l Sym posium on Cavita tion [ C] . Ca liforn ia: Ca liforn ia Institue of Techno logy, 2001. Session B3. 004.
[5] Savchenko Yu N. M ode ling the supercav itation proces?? ses[ J] . Pryk ladna G idrom ekhanika, 2000. 274( 3 ): 75- 86.
[6] M artinW, Travis J S, Roger E A A. Exper imenta l study of a ventila ted supe rcav itation vehicle[ A]. The pro ceedings of Fifth Internationa l Symposium on Cav i?? tation[ C]. Osaka: The Fifh Internationa l Symposium on Cav itation ( CAV2003), 2003, Cav03??OS??7??008.
[7] Savchenko Yu N. Inv estig ation of h igh??speed supe r?? cav itating underw ater mo tion o f bod ies[ A ]. Proceed?? ings o f NATO??AGARD [ C ]. Ukra ine: NAS??IHM, 1997. 20- 1, 12.
[8] 傅慧萍, 鲁传敬. 空化器设计及超空泡参数控制 [ J] . 舰船科学技术, 2003, 25( 5): 49- 51.
[9] Kubota A, Kuto H, Yam aguch iH. A new m odeling o f cav itating flows: a numer ica l study of cav itation on a hy?? drofo il section[ J]. F luidM ech, 1992( 240): 59- 96.

Memo

Memo:
-
Last Update: 2012-12-19