In order to study the effects of lateral flow on the underwater missile vertical launching process considering the hydrodynamic effect, a horizontal fluid dynamics model was developed. We offered the numerical computa...In order to study the effects of lateral flow on the underwater missile vertical launching process considering the hydrodynamic effect, a horizontal fluid dynamics model was developed. We offered the numerical computation method in this process by using the fluent of CFD ( Computational Fluid Dynamics)software. Based on the specific examples, we carried out the computation of the model's drag coefficient, lift coefficient and pitching moment with its launching process. The computation results agree with the results of the experiment and the error between them is less than 10%. It shows that this computation method is viable and can be used in the system design, and the analysis of missile motion and basic structure intensity.展开更多
为研究在发射筒口加载气幕保护装置后所生成的气幕环境对导弹发射过程中的受力影响,基于气幕环境及动量、动量矩定理建立了导弹水下垂直发射出筒过程动力学模型并开展了仿真计算,分析了2、3 m/s 2种航速在有无气幕保护时对弹体发射出筒...为研究在发射筒口加载气幕保护装置后所生成的气幕环境对导弹发射过程中的受力影响,基于气幕环境及动量、动量矩定理建立了导弹水下垂直发射出筒过程动力学模型并开展了仿真计算,分析了2、3 m/s 2种航速在有无气幕保护时对弹体发射出筒受力影响.结果表明:有无气幕2种工况下,随着航速的增加,指定截面的导弹出筒载荷明显增大,有无气幕2种工况弹体出筒均伴随着较大的振荡过程,气幕对出筒过程力学环境改善作用明显,尤其对于航速2 m/s工况下弹体受力大约降低了50%.研究结果可以应用于相关系统方案设计论证、弹体运动及发射安全性评估.展开更多
文摘In order to study the effects of lateral flow on the underwater missile vertical launching process considering the hydrodynamic effect, a horizontal fluid dynamics model was developed. We offered the numerical computation method in this process by using the fluent of CFD ( Computational Fluid Dynamics)software. Based on the specific examples, we carried out the computation of the model's drag coefficient, lift coefficient and pitching moment with its launching process. The computation results agree with the results of the experiment and the error between them is less than 10%. It shows that this computation method is viable and can be used in the system design, and the analysis of missile motion and basic structure intensity.
文摘为研究在发射筒口加载气幕保护装置后所生成的气幕环境对导弹发射过程中的受力影响,基于气幕环境及动量、动量矩定理建立了导弹水下垂直发射出筒过程动力学模型并开展了仿真计算,分析了2、3 m/s 2种航速在有无气幕保护时对弹体发射出筒受力影响.结果表明:有无气幕2种工况下,随着航速的增加,指定截面的导弹出筒载荷明显增大,有无气幕2种工况弹体出筒均伴随着较大的振荡过程,气幕对出筒过程力学环境改善作用明显,尤其对于航速2 m/s工况下弹体受力大约降低了50%.研究结果可以应用于相关系统方案设计论证、弹体运动及发射安全性评估.