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作 者:刘方[1] 肖金石[1] 韦建明 张志洋 王聪[2] LIU Fang;XIAO Jinshi;WEI Jianming;ZHANG Zhiyang;WANG Cong(College of Weaponry Engineering,Naval University of Engineering,Wuhan 430033,Hubei,China;School of Astronautics,Harbin Institute of Technology,Harbin 150001,Heilongjiang,China)
机构地区:[1]海军工程大学兵器工程学院,湖北武汉430033 [2]哈尔滨工业大学航天学院,黑龙江哈尔滨150001
出 处:《兵工学报》2024年第1期197-205,共9页Acta Armamentarii
基 金:国家自然科学基金项目(11672094、11972138)。
摘 要:随着对饱和攻击需求的提高,潜艇连续发射过程的发射时序协调控制研究变得迫切而紧要。考虑到弹体间的流体动力干扰是影响安全发射的主要因素,基于重叠网格多自由度仿真技术,针对连续发射的水下弹体开展姿态弹道干扰特性研究。通过分析流场结构发现,以一定攻角发射的弹体形成的发卡形尾涡是造成后续弹体姿态弹道差异的主要原因。根据不同艇速、时间间隔和空间间隔下弹体间的干扰特性建立干扰评价模型。在保证干扰不影响后续弹体的前提下,以最短发射时长为目标,以综合评价函数为约束,基于改进的贪心算法对大筒多弹式布局的水下弹体开展发射时序优化研究,并采用均匀抽样方法验证优化结果准确性。研究结果表明:相对于均匀抽样方法,改进的贪心算法具有相当的计算准确度和更高的计算效率。With the increasing demand for saturation attacks,the research on the optimization of launch sequence of projectiles launched successively underwater has become important and urgent.Considering that the hydrodynamic interferences between two underwater projectiles are the main factor affecting launch safety,this paper studies the interference characteristics of projectiles launched successively underwater based on the overlapping mesh methods.By analyzing the flow field,it is found that the hairpin vortices formed by the projectile with an angle of attack are the main reason leading to the attitude difference between two projectiles.An interference evaluation model is established according to the interference between the projectiles under the conditions of different transport speeds,time intervals and space intervals.To ensure that the former projectile interferes little with subsequent projectiles,the launch sequence of projectiles fixed at a launch tube is optimized based on the improved greedy algorithm,in which the shortest launch duration is taken as the goal and the comprehensive evaluation function as the constraint.The uniform sampling method is used to verify the accuracy of the optimized results.The results show that the improved greedy algorithm has comparable accuracy and higher efficiency compared with the uniform sampling method.
分 类 号:TV131.2[水利工程—水力学及河流动力学]
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