水面舰船尾流电导率特性与海水温度和气泡分布的关系研究

胡博; 陈伯义

doi:10.11993/j.issn.1673-1948.2007.02.004

水面舰船尾流电导率特性与海水温度和气泡分布的关系研究

doi: 10.11993/j.issn.1673-1948.2007.02.004

胡博,
陈伯义

海军工程大学船舶与动力学院,湖北武汉 430033

基金项目: 国家重点实验室基金资助项目（51444060103JB1101）

详细信息

作者简介:
胡博(1981－)，男，硕士，主要从事传热传质与热流体学及热物理量测的研究.

中图分类号: U661.71
计量
- 文章访问数: 2174
- HTML全文浏览量: 10
- PDF下载量: 1060
- 被引次数: 0
出版历程
- 收稿日期: 2007-01-04
- 修回日期: 2006-03-09
- 刊出日期: 2007-04-30

Relation Among Conductivity Characteristic of Ship Wake, Seawater Temperature and Bubble Distribution

HU Bo,
CHEN Bo-yi

College of Ship and Power,Naval University of Engineering,Wuhan 430033,China

摘要

摘要: 为了对水面舰船尾流的电导率特性受海水温度和气泡分布的综合影响进行理论分析和计算，在建立物理模型和数学模型时，对于具有垂直温度梯度的海水中水面舰船的气泡尾流，假设检测尾流的电导率探头极间的气泡分别呈任意分布和均匀分布，获得了海水温度、气泡半径、气泡数密度及气泡分布方式对非尾流区海水电导率与尾流电导率之差δK的综合影响规律。结果表明，不论探头极间的气泡呈何种分布，当海水温度变化范围为10～16 ℃、气泡半径小于100 μm、气泡数密度为2.16×10⁸～6.4×10¹⁰颗/m³时，δK都随着海水温度升高或气泡半径增大或气泡数密度增加而增大；在海水温度和气泡半径及气泡数密度都给定的条件下，探头极间的气泡分别呈任意分布和均匀分布所对应的δK相差很大，后者约为前者的2.6倍。
- 水面舰船 /
- 尾流 /
- 电导率 /
- 海水温度 /
- 气泡分布
Abstract: Physical and mathematical models are established in order to analyze and calculate the influence of seawater temperature and bubble distribution on conductivity characteristic of ship wake. For the bubble wake with vertical temperature gradient, it is supposed that the bubbles are arbitrarily or uniformly distributed between the two poles of a probe that is used to detect the conductivity of the wake. The laws, on the basis of which the conductivity difference value δK between background seawater and wake is jointly influenced by seawater temperature, bubble radius, bubble density and bubble distribution mode, are obtained. The results show that δK will rise with increasing seawater temperature or bubble radius or bubble density no matter what bubble distribution is when seawater temperature ranges from 10 to 16 ℃, bubble radius is less than 100 μm and bubble density varies from 2.16×10⁸to 6.4×10¹⁰/m³. Under given seawater temperature, bubble radius and bubble density, the δKs respectively corresponding to arbitrary bubble distribution and uniform bubble distribution are far different, the latter is about 2.6 times of the former.
- surface ship /
- wake /
- conductivity /
- seawater temperature /
- bubble distribution

HTML全文

参考文献(9)

[1]	Garber D H，Vrick R J， Cryden J，Thermal Wake Detection[R].Navy Radio and Sound Laboratory Report.S20(AD-493809)12 Jan.,1945.
[2]	顾建农，郑学龄，杨立，等.舰船热尾流热特性的实验研究[J].鱼雷技术.2000，8（4）：5－10.
[3]	Chen boyi,Tang haimin.Measurements and Snalyses of the Relative Conductivity in the Wake of a Surface Ship Model in the Temperature Stratified Fluid[C].Energy Conversion and Application.2001:1290-1293.
[4]	陈伯义，李保国.水面舰船尾流电导率信号分布规律的研究[J].应用力学学报.2005，22（4）：598－601.
[5]	朱江江，陈伯义.水面舰船尾流气泡半径变化规律的研究[J].热科学与技术.2005，4（2）：146－149.
[6]	Carrica P M,Drew D A,Bonetto F J,et al.A Polydisperse Model for Bubbly Twophrase Flow Around a Surface Ship[J].Int.J.Multiphase Flow.1999,25:257-305
[7]	Rodney D Peltzer，et al.A Remote Sensing Study of a Surface Ship Wake[J].Int J Remote Sensing.1987,8(5):689-704.
[8]	海水电导[EB/OL].http://www.wiki.海水电导.2006,12.
[9]	冯士筰，李凤岐，李少菁.海洋科学导论[M].北京：高等教育出版社，1999：58－59.