摘要
为提高潜艇推进效率,降低潜艇阻力和噪声,提出了一种潜艇内置推进系统及其结构布局,初步建立了内置推进系统的理论分析方法和设计思路。对推进系统的管道进行了参数化设计,并借助计算流体力学软件,用体积力代替螺旋桨产生的力场,对不同管道参数下的潜艇周围及管道内部的流场进行了数值模拟,结果表明:增大管道的进口面积可以减小管道阻力,提高管道系统效率。将螺旋桨置入出流管道后的计算结果表明:航速和螺旋桨转速的增加均会引起管道内螺旋桨进速的增加,其中螺旋桨转速的影响相对较大。另外,潜艇保持匀速航行时,推进系统的推进效率随航速增加而增加,在航速30kn时达到59.4%。由此可见,设计良好的潜艇内置推进系统的推进效率可以达到或超过常规螺旋桨的推进效率,证明其结构布局和设计思路是可行的。
To increase the efficiency of propulsor and decrease the noise level of submarine, a kind of internal submarine propulsor and its configuration were presented. And methods for theoretical analysis and design of this internal propulsor were proposed primarily. Besides, the tube of the propulsor was parametrically designed. Using CFD software, the flow field around the submarine with different tube parameters was simulated by adopting volume force as a substitute for propeller force. The calcu- lated results indicate that the resistance of the tube decreases by increasing inlet area and the efficiency of tube system increases. After the propeller was installed, CFD calculations show that increase of both submarine speed and propeller speed can cause the propeller to begin speeding. In addition, the propulsive efficiency increased from 57. 8% to 59.4% to promote the submarine speed from 15 to 30 knots. Studies show that the propulsive efficiency of the well designed internal propulsor can equal or surpass that of a conventional propeller, which proves the effectiveness of the design method of this new-style propulsor.
出处
《海军工程大学学报》
CAS
北大核心
2011年第4期74-79,共6页
Journal of Naval University of Engineering
关键词
潜艇
推进
管道
螺旋桨
submarine
propulsion
tube
propeller
