| 对称双翼沉浮振动推进性能研究 |
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| 引用本文： | 郭清马.对称双翼沉浮振动推进性能研究[J].石家庄经济学院学报,2009(5):63-66. |
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| 作者姓名： | 郭清马 |
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| 作者单位： | 北京农村商业银行总行工商企业授信风险管理部,北京100140 |
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| 摘 要： | 该文利用非定常双时间NS方程的预处理方法对摆翼地效推进器进行了推力和推进性能的分析,结果显示沉浮振动的推力和效率与速度的变化关系表现出一致性;固定频率,改变速度,发现推力和效率存在极大值点;随着频率增大,极大值点右移。最大推力和效率的动力攻角为6o-9o,利用速度矢量图和压力云图显示了分离涡的输运和扩散,再一次展示了地效的存在。
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| 关 键 词： | NS方程 翼形振动 地效推进技术 |
Performance investigation of symmetrical plunging dual-foils propulsor |
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| GUO Qing-ma.Performance investigation of symmetrical plunging dual-foils propulsor[J].Journal of Shijiazhuang University of Economics,2009(5):63-66. |
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| Authors: | GUO Qing-ma |
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| Institution: | GUO Qing-ma (Beijing Rural Commercial bank, Beijing 100140) |
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| Abstract: | Credit risk management of affiliated enterprises is very important for commercial banks. The implicit relationship of affiliated enterprises and their systemic credit risks require commercial banks to remedy credit management deficiencies and optimize the credit risk prevention mechanism, such as building affiliated enterprises credit risk management mechanisms, improving implicit relationship recognition ability; calculating the credit limits of affiliated enterprises, establishing affiliated enterprises credit risk warning mechanisms, building inter-bank infonnation exchange platform for affiliated enterprises, and strengthening the control measures of affiliated enterprises credit risk. |
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| Keywords: | NS equations symmetrical plunging dual-foils ground effect propulsion |
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