Dynamic Force and Moment Coefficients for Short Length Annular SealsSource: Journal of Tribology:;1993:;volume( 115 ):;issue: 001::page 61Author:Luis San Andres
DOI: 10.1115/1.2920987Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Close form expressions for the dynamic force and moment coefficients in short length annular pressure seals operating at the concentric and aligned position are derived. The analysis considers fully developed turbulent flow within the seal and determines a set of ordinary differential equations for the bulk-flow field due to perturbations in rotor displacements and angular motions. The flow equations are solved exactly for seals of short length where dynamic variations in circumferential velocity are neglected. The analytical solution derived is simple and reasonably accurate for seals of length to diameter ratios (L/D) as large as 0.5 as comparisons with results from full-scale numerical solutions show. The formulae presented are practical for use in preliminary design stages and parametric studies of dynamic seal performance.
keyword(s): Force , Flow (Dynamics) , Motion , Design , Differential equations , Rotors , Fully developed turbulent flow , Equations , Formulas AND Pressure ,
|
Collections
Show full item record
| contributor author | Luis San Andres | |
| date accessioned | 2017-05-08T23:42:43Z | |
| date available | 2017-05-08T23:42:43Z | |
| date copyright | January, 1993 | |
| date issued | 1993 | |
| identifier issn | 0742-4787 | |
| identifier other | JOTRE9-28501#61_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/112725 | |
| description abstract | Close form expressions for the dynamic force and moment coefficients in short length annular pressure seals operating at the concentric and aligned position are derived. The analysis considers fully developed turbulent flow within the seal and determines a set of ordinary differential equations for the bulk-flow field due to perturbations in rotor displacements and angular motions. The flow equations are solved exactly for seals of short length where dynamic variations in circumferential velocity are neglected. The analytical solution derived is simple and reasonably accurate for seals of length to diameter ratios (L/D) as large as 0.5 as comparisons with results from full-scale numerical solutions show. The formulae presented are practical for use in preliminary design stages and parametric studies of dynamic seal performance. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | Dynamic Force and Moment Coefficients for Short Length Annular Seals | |
| type | Journal Paper | |
| journal volume | 115 | |
| journal issue | 1 | |
| journal title | Journal of Tribology | |
| identifier doi | 10.1115/1.2920987 | |
| journal fristpage | 61 | |
| journal lastpage | 70 | |
| identifier eissn | 1528-8897 | |
| keywords | Force | |
| keywords | Flow (Dynamics) | |
| keywords | Motion | |
| keywords | Design | |
| keywords | Differential equations | |
| keywords | Rotors | |
| keywords | Fully developed turbulent flow | |
| keywords | Equations | |
| keywords | Formulas AND Pressure | |
| tree | Journal of Tribology:;1993:;volume( 115 ):;issue: 001 | |
| contenttype | Fulltext |