|Table of Contents|

Simulation on Natural Supercavitation Characteristics of Underwater High-speed Vehicle

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

Issue:
2009年03期
Page:
330-334
Research Field:
Publishing date:

Info

Title:
Simulation on Natural Supercavitation Characteristics of Underwater High-speed Vehicle
Author(s):
YI Wen-jun1LI Tie-peng2XIONG Tian-hong1WANG Zhong-yuan1
1.National Key Laboratory of Transient Physics,NUST,Nanjing 210094,China;2.Ordnance Mission,Naval Armament Department,Beijing 100841,China
Keywords:
underwater vehicles supercavitation cavitation computational fluid dynamics
PACS:
U661.1
DOI:
-
Abstract:
Based on the homogeneous flow hypothesis,a multi-phase computational fluid dynamics model of natural supercavitation flow around underwater high-speed vehicle is developed to achieve drag reduction.The supercavitation flow of a vehicle is simulated numerically using the commercial software Fluent 6.2.The supercavitation characteristics of two vehicle models,namely disk cavitator and conical cavitator,are analyzed comparatively based on the length,diameter,gas volume fraction and thickness of their cavitations.The development process of supercavitation flow for a vehicle with a disk cavitator is shown,and the variation of the natural supercavitation characteristics of the high-speed vehicle is obtained.The results show that the disk cavitator is advantageous for supercavitation formation,and the relative diameter and length of supercavitation decreases with the increase of cavitation number.The slenderness ratio for stable supercavitation formation of a high-speed underwater vehicle is very high,and the instable state occurs with the decrease of the vehicle speed.

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Last Update: 2012-11-19