| 射流速度对气幕发射方式下航行体运动过程的影响研究 |
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| 引用本文： | 曹伟,刘海军,王聪.射流速度对气幕发射方式下航行体运动过程的影响研究[J].工程力学,2013,30(9):288-292. |
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| 作者姓名： | 曹伟 刘海军 王聪 |
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| 作者单位： | 1.哈尔滨工业大学航天学院，哈尔滨150001； |
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| 基金项目： | 国家自然科学基金项目(51149003，50909027) |
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| 摘 要： | 气幕发射方式是一种新型的航行体水下垂直发射方式。采用数值模拟的方法，研究了不同射流速度情况下航行体水下垂直发射过程中气幕形态、航行体表面压力及阻力特性等的变化规律，得到了在出筒过程中，不同气体射流速度情况下，航行体均可顺利通过气幕的最小半径处，气体射流马赫数越大，航行体总阻力系数越大；在出水过程中，航行体总阻力系数单调降低，与气体射流马赫数无关等结论。
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| 关 键 词： | 流体力学 多相流 数值模拟 水下航行体 气幕 |
| 收稿时间： | 2013-09-25 |
THE EFFECT OF GAS JET SPEED ON THE MOTION PROCESS OF THE UNDERWATER VEHICLE VERTICAL LAUNCHING BY USING GAS CURTAIN |
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| Affiliation: | 1.School of Astronautics, Harbin Institute of Technology, Harbin 150001, China;2.College of Civil Engineering and Architecture, Hebei University, Baoding 071002, China |
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| Abstract: | The vertical launching technology of the underwater vehicle by using the gas curtain is a new underwater launch technology. By means of numerical simulation,this paper studies the relationship between the shape of the gas curtain and hydrodynamic characteristics of the underwater vehicle under different gas jet speed during the vertical projection. The results show that,in the process of the underwater vehicle launching from the tube,the vehicle can pass through the least radius of the gas curtain successfully on the condition of different gas jet speed,and in the process of the underwater vehicle exiting the water,the total drag coefficient of the vehicle decreases independent of the Mach number of the gas jet. |
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