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高雷诺数时筒形桅杆在均匀流场中的风载实验研究 总被引:1,自引:0,他引:1
在哈尔滨工程大学船模拖曳水池中,研究了雷诺数在3.19×104~1.15×106的范围内,表面倾斜且前后不对称的筒形桅杆攻角从0°~180°,以15°为间隔,在均匀流场中所受的风载。分析了桅杆所受的周向压力、轴向压力和St随雷诺数和攻角的变化趋势。结果表明,倾斜壁面和攻角改变对压力分布和St有较大影响。 相似文献
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Graeme Rimer 《Arms and Armour》2018,15(1):58-82
This remarkably fine sword was commissioned by General Baron Gaspard Gourgaud, the close personal aide of Napoleon Bonaparte, to commemorate the return of the Emperor’s body from St Helena to Paris in 1840. It was designed and made in 1842 by Alexandre Lapret, a distinguished artist-craftsman working in the famous Paris atelier of Henri Lepage. 相似文献
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