火箭深弹水下减阻技术研究

基于Fluent软件,对火箭深弹的水下减阻技术进行了研究。提出了火箭深弹中部补气的减阻方式。通过对下潜速度和通气量2个影响因素的分析,得到了火箭深弹在8～100 m/s速度范围的流场计算结果。计算结果表明,中部补气能有效地减小阻力,最大减阻效率达到25%;火箭深弹在水中所受阻力随通气量的增大而减小,在通气量相同的条件下,减阻效率随下潜速度的减小而增大。计算结果与实验结果基本一致。

Research on drag reduction characteristics of underwater rocket depth

Drag reduction characteristics of underwater rocket depth were researched based on Fluent software.A new method was proposed which can finish supplement air at the middle of rocket depth to reduce drag.Through analysis of two influencing factors,i.e.dive speed and ventilation,flow field calculation results of rocket depth at the speed range 8~100 m/s were obtained.The results show that supplementing air at the middle projectile can effectively reduce drag and the maximum drag reduction ratio attains 25%;the drag of underwater rocket depth decreases when ventilation increases.At constant ventilation,drag reduction efficiency increases when dive speed decreases.The calculation results fit well with the experimental results.