摘要
为研究排放口结构对水下航行器热射流的影响,以椭圆形排放口结构为重点,建立不同半径比的椭圆形排放口仿真模型,采用计算流体动力学方法对不同半径比椭圆形排放口水下航行器的热射流特征进行研究。计算结果表明:当椭圆形排放口的半径比发生变化时,其热射流温度衰减特征和水面红外特征变化明显,其中结构2椭圆形排放口的热射流浮升高度和水面最高峰值温度的下降幅度最大,水面纵向扩散最大距离抑制效果明显。
In order to study the influence of discharge port structure on the thermal jet of underwater vehicles,a simulation model of different radius-ratio oval discharge ports are established,focusing on the elliptical discharge port structure.Computational fluid dynamics is used to study the thermal jet characteristics of underwater vehicles with elliptical discharge ports with different radius ratios.The calculation results show that the thermal jet temperature attenuation characteristics and the infrared characteristics of the water surface change obviously when the radius ratio of the oval discharge port is changed.The thermal jet buoyancy height and the highest peak water surface temperature of the elliptical discharge outlet in structure 2 have the greatest decrease,and the maximum longitudinal diffusion distance of the water surface has a significant inhibitory effect.
作者
高程哲
杜永成
杨立
GAO Chengzhe;DU Yongcheng;YANG Li(Academy of Power Engineering,Naval University of Engineering,Wuhan 430033,China)
出处
《船舶工程》
CSCD
北大核心
2023年第3期174-180,共7页
Ship Engineering
关键词
水下航行器
热射流
椭圆形排放口
仿真对比
underwater vehicle
thermal jet
oval discharging port
simulation comparison
