Artículo
Effects of rough boundary and nonzero boundary conditions on the lubrication process with micropolar fluid
Autor/es | Bonnivard, Matthieu
Pažanin, Igor Suárez Grau, Francisco Javier |
Departamento | Universidad de Sevilla. Departamento de Ecuaciones Diferenciales y Análisis Numérico |
Fecha de publicación | 2018 |
Fecha de depósito | 2018-10-02 |
Publicado en |
|
Resumen | The lubrication theory is mostly concerned with the behavior of a lubricant flowing through a narrow gap. Motivated by the experimental findings from the tribology literature, we take the lubricant to be micropolar fluid ... The lubrication theory is mostly concerned with the behavior of a lubricant flowing through a narrow gap. Motivated by the experimental findings from the tribology literature, we take the lubricant to be micropolar fluid and study its behavior in a thin domain with rough boundary. Instead of considering (commonly used) simple zero boundary condition, we impose physically relevant (nonzero) boundary condition for microrotation and perform asymptotic analysis of the corresponding 3D boundary value problem. We formally derive a simplified mathematical model acknowledging the roughness-induced effects and the effects of the nonzero boundary conditions on the macroscopic flow. Using the obtained asymptotic model, we study numerically the influence of the specific rugosity profile on the performance of a linear slider bearing. The numerical results clearly indicate that the use of the rough surfaces may contribute to enhance the mechanical performance of such device. |
Identificador del proyecto | 3955
202778 MTM2011-24457 FQM309 |
Cita | Bonnivard, M., Pažanin, I. y Suárez Grau, F.J. (2018). Effects of rough boundary and nonzero boundary conditions on the lubrication process with micropolar fluid. European Journal of Mechanics / B Fluids, 72, 501-518. |
Ficheros | Tamaño | Formato | Ver | Descripción |
---|---|---|---|---|
Effects of rough boundary and ... | 461.4Kb | [PDF] | Ver/ | |