非流线型航行体超空泡减阻的实验分析和数值模拟

针对某水下航行体模型,在水洞内进行了自然状态和通气产生超空泡状态下的阻力试验,并用FLUENT6.0进行了数值模拟,依据比较结果分析和处理了实验数据,得到了自然和通气状态下非流线型水下航行体的阻力变化规律.结果表明,自然状态下非流线型航行体的阻力比流线型的大3倍多,但通气形成超空泡后可以大大降低航行体的阻力,并使减阻效果超过流线型航行体,从而达到更高的航速.

Experimental analysis and numerical simulated research of the supercavitating body drag

The drag experiment of the supercavitating body under the natural condition and artificial ventilated condition is carried on,and the numerical simulation is performed using FLUENT6.0.The experimental data is analyzed according to the comparison between experiment and numerical simulation.The regulations of the drag of supercavitating body under the natural condition and artificial ventilated condition are found.The result shows that the drag of supercavitating body under natural condition is greatly increased compared with streamline body,but after the artificial ventilated supercavity is formed the drag is greatly decreased,and the drag reduced effect is better than streamline body.