Frictional Moment of Flow Between Two Concentric Spheres, One of Which RotatesSource: Journal of Fluids Engineering:;1978:;volume( 100 ):;issue: 001::page 97Author:K. Nakabayashi
DOI: 10.1115/1.3448622Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: 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.
keyword(s): Flow (Dynamics) , Clearances (Engineering) , Disks , Annulus , Formulas AND Rotating bodies ,
|
Collections
Show full item record
| contributor author | K. Nakabayashi | |
| date accessioned | 2017-05-08T23:05:08Z | |
| date available | 2017-05-08T23:05:08Z | |
| date copyright | March, 1978 | |
| date issued | 1978 | |
| identifier issn | 0098-2202 | |
| identifier other | JFEGA4-26930#97_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/91226 | |
| description abstract | 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. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | Frictional Moment of Flow Between Two Concentric Spheres, One of Which Rotates | |
| type | Journal Paper | |
| journal volume | 100 | |
| journal issue | 1 | |
| journal title | Journal of Fluids Engineering | |
| identifier doi | 10.1115/1.3448622 | |
| journal fristpage | 97 | |
| journal lastpage | 106 | |
| identifier eissn | 1528-901X | |
| keywords | Flow (Dynamics) | |
| keywords | Clearances (Engineering) | |
| keywords | Disks | |
| keywords | Annulus | |
| keywords | Formulas AND Rotating bodies | |
| tree | Journal of Fluids Engineering:;1978:;volume( 100 ):;issue: 001 | |
| contenttype | Fulltext |