Frictional moment of flow between two concentric spheres, one of which rotates
Frictional moment of flow between two concentric spheres, one of which rotates
复制标题
两个同心球之间的流动摩擦力矩，其中一个旋转
DOI：
10.1115/1.3448622
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发表时间：
1978
影响因子：
2
通讯作者：
K. Nakabayashi
中科院分区：
文献类型：
--
作者：
K. Nakabayashi
分别对旋转内球与静止外球之间的流动和旋转外球与静止内球之间的流动进行了实验研究。四个基本的流态的存在都被验证，其程度被映射在一个范围内的雷诺数间隙比组合。得到了各种流态下的摩擦力矩系数的经验公式。球形环隙流获得的摩擦力矩的系数，然后与在有限空间中旋转的盘周围的流动，并考虑旋转体的表面曲率的影响。
Frictional moment is investigated experimentally for the flow between a rotating inner sphere and a stationary outer one, and for the flow between a rotating outer sphere and a stationary inner one, respectively. The existence of four basic flow regimes for both is verified, and their extent is mapped over a range of Reynolds number-clearance ratio combinations. An empirical formula for the coefficient of frictional moment is obtained for every flow regime. The coefficient of frictional moment obtained for spherical annulus flow is then correlated with that of the flow around a disk rotating in a confined space, and the effect of the surface curvature of rotating bodies is considered.