Thermo-hydrodynamic lubrication in hydrodynamic bearings
This Series provides the necessary elements to the development and validation of numerical prediction models for hydrodynamic bearings. This book describes the thermo-hydrodynamic and the thermo-elasto-hydrodynamic lubrication. The algorithms are methodically detailed and each section is thoroughly...
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| Otros Autores: | , |
| Formato: | Libro electrónico |
| Idioma: | Inglés |
| Publicado: |
Hoboken :
Wiley
2014.
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| Colección: | Wiley ebooks.
Numerical Methods in Engineering Series. |
| Acceso en línea: | Conectar con la versión electrónica |
| Ver en Universidad de Navarra: | https://innopac.unav.es/record=b46128773*spi |
Tabla de Contenidos:
- Cover; Title Page; Copyright; Contents; Preface; Nomenclature; Chapter 1: Thermo-hydrodynamic Lubrication; 1.1. Global thermal balance; 1.2. Energy equation for the lubricant film; 1.2.1. Particular case of non-filled film zones; 1.3. Fourier equation inside the solids; 1.4. Boundary conditions; 1.4.1. Supply ducts; 1.4.2. External walls of solids; 1.4.3. Surfaces at solid truncations; 1.4.4. Interfaces between film and solids; 1.4.5. Supply orifices and grooves; 1.4.6. Axial extremities of the lubricant film; 1.5. Bibliography; Chapter 2: Three-dimensional Thermo-hydrodynamic Model.
- 2.1. Model description2.2. Discretization of the film energy equation; 2.2.1. Stationary case; 2.2.2. Transient case; 2.2.2.1. Singularities at domain boundaries; 2.2.2.2. Singularities at film formation boundaries; 2.2.2.3. Stability and stationary case; 2.3. Discretization of Fourier equation in the solids; 2.4. Assembly of discretized equations for the film and the solids; 2.5. Numerical behavior of the THD finite element model; 2.5.1. Definition of reference problems; 2.5.1.1. "Rigid case"; 2.5.1.2. "Elastic case"; 2.5.2. Behavior for a stationary case.
- 2.5.3. Behavior for a transient case2.5.3.1. Transient problem equivalent to a case stationary with respect to the shaft; 2.5.3.2. Transient problem with a variable thickness profile and a lubricant supply orifice located on the shaft; 2.5.3.3. Transient problem with a stationary thickness profile and a lubricant supply orifice located on the shaft; 2.5.3.4. Geometrical definition of the supply zone; 2.5.4. Behavior in the case of a variation in the axial direction of the film thickness; 2.5.5. Evaluation of the global thermal method (GTM); 2.6. Bibliography.
- Chapter 3: Simplified Thermo-hydrodynamic Models3.1. Simplified THD model based on the Rhode and Li assumptions; 3.1.1. Expression of the pressure and reduced Reynolds equation; 3.1.2. Velocity components; 3.1.3. Energy and Fourier equations; 3.1.4. Discretization of equations; 3.1.5. Evaluation of the method based on Rhode and Li assumptions; 3.2. Simplified models for cyclic regimes; 3.2.1. Model with the temperature averaged on the film thickness (ATM); 3.2.1.1. Model description; 3.2.1.2. Model evaluation for a stationary "rigid" case.
- 3.2.1.3. Transient problem with a non-constant thickness profile and a lubricant supply orifice located on the shell3.2.1.4. Transient problem with a stationary thickness profile and a lubricant supply orifice located on the shaft; 3.2.2. Model with a parabolic temperature profile across the film thickness (PTM); 3.2.2.1. Model description; 3.2.2.2. Model evaluation for a stationary "rigid" case; 3.2.2.3. Transient problem with a variable thickness profile and a lubricant supply orifice located on the bearing shell.
