The effect of curvature, torsion and Dean number on secondary flow is discussed. 3. 讨论了曲率、挠率、Dean数对二次流动的影响。
The effect of curvature, torsion and Dean number on secondary flow, the isoline of stream function, the distribution of axial speed and wall friction is discussed in detail. 详细讨论了曲率、挠率、Dean数对二次流动、流函数等值线和轴向速度的分布以及壁面摩擦力的影晌。
The relationship between the cyclic stress response of tension and torsion and the cycle number were measured and studied subjected to proportional and non-proportional loadings. 分别测试和研究比例与非比例拉扭加载下拉与扭的应力响应值随循环数的变化关系。
Through characteristic analysis and calculations of the center of rigidity, adopting reasonable arrangements for truss in order to reduce the torsion effect, suggest that the pillar distance is equality and the number of trusses is odd in this paper. 通过分析交错桁架的特性和计算其刚度中心采用合理的桁架布置方案以减少扭转的影响,建议交错桁架体系等柱距布置,且桁架榀数为奇数。
Validity of the method is tested by simulation of a hovering flow field at high Reynolds number. The influence of the blade's thickness and torsion on the hovering flow field at low Reynolds number is then analysed. 首先,通过模拟高雷诺数的悬停流场验证了方法的可行性,在此基础上,对低雷诺数旋翼浆叶在不同厚度和有无扭转时的悬停流场进行了比较分析。