﻿ 潜艇近水面航行兴波特征研究
 舰船科学技术  2016, Vol. 38 Issue (12): 44-47 PDF

1. 镇江船艇学院, 江苏 镇江 212003 ;
2. 哈尔滨工程大学 多体船技术国防重点学科实验室, 黑龙江 哈尔滨 150001

Investigation on the characteristics of the wave induced by a near free surface submarine
QIU Yun-ming1, DENG Rui2
1. Zhenjiang Watercraft College of PLA, Zhenjiang 212003, China ;
2. Multihull Ship Technology, Key Laboratory of Fundamental Science for National Defence, Harbin Engineering University, Harbin 150001, China
Abstract: Submarine, which is a kind of underwater vehicle, can induce a much more complicated flow field compared with the other conditions when it is traveling near the free surface and the effect of the submarine on the free surface is important. The viscous computational method is adopted in the present paper, in order to simulate the viscous flow field around the submarine. The wave form of the free surface is calculated accurately in this manuscript, and the characteristics of the induced wave are analyzed particularly. The characteristics of the wave induced by the submarine sailing near the free surface and some conclusions are obtained by the research.
Key words: submarine     near surface     wave form     numerical calculation
0 引 言

1 几何模型

 图 1 潜艇三维模型 Fig. 1 Three-dimensional mode of SUBOFF submarine

 图 2 流体域网格划分 Fig. 2 Fluid domain mesh generation

 图 3 边界条件设置 Fig. 3 Boundary condition setting

2 数值结果及分析

 图 4 不同航速下自由液面波形比较 Fig. 4 Comparison of free surface wave forms at different velocities

Fr = 0.15 时，潜艇首部上方兴波为波峰，峰值为 21.68 mm，沿潜艇首部往后 1.81 m 处为最大波谷，波谷值为-53.28 mm，之后波高逐渐增加，在尾部波高达到最高值，即 38.93 mm，在尾部后方波高又急剧降低至-25.00 mm 左右，且尾部后方出现少量破碎的波浪。

 图 5 Suboff 潜艇各航速下中纵剖面上兴波比较 Fig. 5 Comparison of wave forms of submarine Suboff longitudinal section in center plane in each speed

3 结 语

1）潜艇在接近自由液面航行时，对自由液面会产生影响，其水面兴波产生较为明显的波峰和波谷。

2）随着Fr 数的增加，自由表面的兴波越来越剧烈，波峰和波谷的高度也越来越大，波峰波谷均随着Fr 的增加向后偏移。

3）随着Fr 的增加，自由液面兴波范围逐渐增加，艇体的兴波在尾部也由一个波系逐渐分离称为 2 个独立的波系，并且兴波中的最大波高出现在所分离出的独立波系中。

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