| 引用本文: | 尤天庆,王占莹,权晓波,等.尾空泡对水下航行体流体阻尼力影响数值计算分析.[J].国防科技大学学报,2016,38(4):64-68.[点击复制] |
| YOU Tianqing,WANG Zhanying,QUAN Xiaobo,et al.Numerical analysis of the tail cavity effect on underwater vehicle hydrodynamic damping force[J].Journal of National University of Defense Technology,2016,38(4):64-68[点击复制] |
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| 尾空泡对水下航行体流体阻尼力影响数值计算分析 |
| 尤天庆, 王占莹, 权晓波, 鲍文春, 肖鲁, 程少华 |
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(北京宇航系统工程研究所， 北京 100076)
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| 摘要: |
| 针对航行体尾空泡对流体阻尼力影响的问题，结合动坐标系技术和空泡多相流数值模拟方法，通过求解雷诺平均的纳维-斯托克斯方程组，进行阻尼力计算研究。试验数据对比结果表明，该方法具有较好的精度。数值计算研究表明，尾空泡会削弱航行体尾部压力的不对称性，使航行体尾部流体阻尼力减小。当尾空泡增加到一定尺寸时，流体阻尼力减小的幅度逐渐趋缓，同时尾空泡也改变了流体阻尼力随攻角的变化趋势。研究充分表明了航行体流体力设计中考虑尾空泡影响的必要性。 |
| 关键词: 尾空泡 流体阻尼力 计算流体动力学 水下航行体 |
| DOI：10.11887/j.cn.201604010 |
| 投稿日期：2015-09-12 |
| 基金项目:国防基础科研计划资助项目（A0320110015） |
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| Numerical analysis of the tail cavity effect on underwater vehicle hydrodynamic damping force |
| YOU Tianqing, WANG Zhanying, QUAN Xiaobo, BAO Wenchun, XIAO Lu, CHENG Shaohua |
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(Beijing Institute of Space System Engineering, Beijing 100076, China)
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| Abstract: |
| For the influence of tail cavity on hydrodynamic damping force, a method was proposed by combing the rotating reference frames and cavity multiphase flow simulation techniques and solving the Reynolds averaged NS equations. Numerical research indicates that the unbalance of vehicle tail part pressure distribution has been relieved by tail cavity, which causes the reduction of hydrodynamic damping force. As the cavity expands, the decreasing rate trends tend to be slower. The tail cavity also changes the trend of damping force, which varies with the attack angle. Research reveals the necessary consideration of the effect of tail cavity on underwater vehicle hydrodynamic damping force design. |
| Keywords: tail cavity hydrodynamic damping force computational fluid dynamics underwater vehicle |
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