| 引用本文: | 王金龙,王浩,江坤,等.超音速子母弹时序抛撒分离干扰特性.[J].国防科技大学学报,2016,38(5):105-111.[点击复制] |
| WANG Jinlong,WANG Hao,JIANG Kun,et al.Aerodynamic interference investigation of supersonic cluster munition dispensed by sequence[J].Journal of National University of Defense Technology,2016,38(5):105-111[点击复制] |
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| 超音速子母弹时序抛撒分离干扰特性 |
| 王金龙, 王浩, 江坤, 陶如意, 王政伟 |
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(南京理工大学 能源与动力工程学院， 江苏 南京 210094)
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| 摘要: |
| 为分析在时序抛撒方式下子母弹多体干扰流场特性及其对各舱段弹体气动特性的影响，基于流体控制方程与六自由度刚体运动方程，结合非结构动网格技术，分别对两种时序抛撒方式及后舱子弹单独抛撒方式下的子母弹三维非定常分离流场进行数值模拟，得到不同抛撒时序下的分离流场特性及其气动干扰特性，揭示各舱段子弹在不同分离阶段的气动干扰相互作用过程。研究结果表明：在时序抛撒分离过程中各弹体间激波不断地交错干扰，增加了流场结构的复杂性；前舱子弹的激波干扰使得后舱段子弹气动分离参数较低，分离效率较慢，尤其在短时序间隔下，后舱弹体受前舱子弹干扰较为严重，弹体的安全分离受到影响。 |
| 关键词: 流体力学 时序抛撒 多体分离 气动特性 数值模拟 |
| DOI：10.11887/j.cn.201605017 |
| 投稿日期：2015-05-04 |
| 基金项目:江苏省高校科研创新计划资助项目(AE91316) |
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| Aerodynamic interference investigation of supersonic cluster munition dispensed by sequence |
| WANG Jinlong, WANG Hao, JIANG Kun, TAO Ruyi, WANG Zhengwei |
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(School of Energy and Power Engineering, Nanjing University of Science & Technology, Nanjing 210094, China)
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| Abstract: |
| In order to analyze the multi-body flow characteristics and the aerodynamic interference characteristics for the sub-munitions in different bays under sequential separation, the three-dimensional unsteady flow field of the cluster munition under two types of sequential separation and single separation style was simulated with the use of the unstructured dynamic mesh method, based on the governing equations of fluid dynamics and rigid body motion equations of 6DOF (degree of freedom). The variation of the flow characteristics and the aerodynamic interference characteristics of sub-munitions in different separation styles was shown and the interaction process of aerodynamic interference between the sub-munitions in different separation stages was revealed as the results. Numerical simulation results show that the flow characteristics become more complicated and the aerodynamic separation parameters of the rear sub-munition become lower than that of the front sub-munition because of the shock wave interaction between the sub-munitions in the process of sequential separation. During the short sequential separation, the interference from the front sub-munition to the rear sub-munition is more severe so that the security of the separation between the sub-munitions is affected. |
| Keywords: fluid mechanics sequential separation multi-body separation aerodynamic characteristics numerical simulation |
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