International Journal of Surface Engineering and Interdisciplinary Materials Science
An elastohydrodynamic model is applied in this work to study the influence of surface texturing o... more An elastohydrodynamic model is applied in this work to study the influence of surface texturing on the structural performance of a coated aerodynamic plain bearing and a coated hydrodynamic plain bearing. Shaft rotational speed and radial load are digitally optimized to improve plain bearing performance, such as pressure, bearing inner face displacement, and shear stresses. Results are presented for different operating conditions. This research is carried out in order to predict the elastic behavior of a coated hydrodynamic plain bearing as well as a coated aerodynamic plain bearing at textured surface compared at a non-textured surface, operating at very high speeds. This study is a numerical investigation using a CFD code, by solving the Navier-Stokes equations of motion by the finite volume method and the displacement equations using the finite element method.
Purpose – This paper aims to investigate the fluid flow regime and the elastic effect in a plain ... more Purpose – This paper aims to investigate the fluid flow regime and the elastic effect in a plain cylindrical journal bearing subjected to highly severe operating velocity to better predict the behavior of the bearing for the turbulent flow regime. Design/methodology/approach – A numerical analysis of the behavior of an elastohydrodynamic for cylindrical journal bearing finite dimension coated with antifriction material in turbulent regime, is implemented using the code-ANSYS CFX. This analysis is performed by solving the Navier–Stocks equations of continuity by the method of finite volume for rotational speeds ranging from 6,000 to 15,000 rpm, that is to say for different Reynolds number. Findings – This study aims to better predict the elastic behavior in a journal bearing subjected to severe operating conditions. The speed of rotation varies from 6,000 to 15,000 rpm. Originality/value – The results clearly show that significant pressures are applied in the extreme case of speed, t...
International Journal of Surface Engineering and Interdisciplinary Materials Science, 2021
Hydrodynamic plain bearings are components that provide the guiding in rotation of rotating machi... more Hydrodynamic plain bearings are components that provide the guiding in rotation of rotating machines, such as turbines, the reactors. This equipment works under very severe operating conditions. In order to improve the hydrodynamic performance of these rotating machines, the industrialists specialized in the manufacture of hydrodynamic bearings have designed a bearing model with its textured interior surface. The numerical analysis is carried out to study the for both plain bearings types with a textured a non-textured surface thus to see the improvement of the plain bearing hydrodynamic performances, as well as the fluid flow behavior in motion. The analysis is performed by solving the continuity equation of Navier-Stokes, by the finite volume method, using CFD code. The numerical results show that the most important hydrodynamic characteristics such as pressure, minimal film thickness, friction torque, leakage flow, are significant for the textured plain bearing under rotational v...
International Journal of Surface Engineering and Interdisciplinary Materials Science
Surface texturing technology has been newly explored technique in the tribological domain, and th... more Surface texturing technology has been newly explored technique in the tribological domain, and this method is carried out to improve the displacement and performance of the Babbitt plain journal bearing with a textured surface. The numerical analysis is carried out to study the textured surface effect on the elastic behaviour of the journal bearing. First, the bearing is tested without texture; second, it is examined completely textured, by varying the operating parameters of the bearing. The performance is observed in a pressure profile, displacement, and shear stress, generated for each combination of radial loads, and rotational velocity of the shaft. The numerical modelling is used by solving the displacement equations by the finite element method to analyses bearing displacement for severe operating conditions. The results show that the elastic deformations for textured bearing, are important and preponderant for higher rotational speeds, and shear stresses are important for hi...
International Journal of Surface Engineering and Interdisciplinary Materials Science
An elastohydrodynamic model is applied in this work to study the influence of surface texturing o... more An elastohydrodynamic model is applied in this work to study the influence of surface texturing on the structural performance of a coated aerodynamic plain bearing and a coated hydrodynamic plain bearing. Shaft rotational speed and radial load are digitally optimized to improve plain bearing performance, such as pressure, bearing inner face displacement, and shear stresses. Results are presented for different operating conditions. This research is carried out in order to predict the elastic behavior of a coated hydrodynamic plain bearing as well as a coated aerodynamic plain bearing at textured surface compared at a non-textured surface, operating at very high speeds. This study is a numerical investigation using a CFD code, by solving the Navier-Stokes equations of motion by the finite volume method and the displacement equations using the finite element method.
Purpose – This paper aims to investigate the fluid flow regime and the elastic effect in a plain ... more Purpose – This paper aims to investigate the fluid flow regime and the elastic effect in a plain cylindrical journal bearing subjected to highly severe operating velocity to better predict the behavior of the bearing for the turbulent flow regime. Design/methodology/approach – A numerical analysis of the behavior of an elastohydrodynamic for cylindrical journal bearing finite dimension coated with antifriction material in turbulent regime, is implemented using the code-ANSYS CFX. This analysis is performed by solving the Navier–Stocks equations of continuity by the method of finite volume for rotational speeds ranging from 6,000 to 15,000 rpm, that is to say for different Reynolds number. Findings – This study aims to better predict the elastic behavior in a journal bearing subjected to severe operating conditions. The speed of rotation varies from 6,000 to 15,000 rpm. Originality/value – The results clearly show that significant pressures are applied in the extreme case of speed, t...
International Journal of Surface Engineering and Interdisciplinary Materials Science, 2021
Hydrodynamic plain bearings are components that provide the guiding in rotation of rotating machi... more Hydrodynamic plain bearings are components that provide the guiding in rotation of rotating machines, such as turbines, the reactors. This equipment works under very severe operating conditions. In order to improve the hydrodynamic performance of these rotating machines, the industrialists specialized in the manufacture of hydrodynamic bearings have designed a bearing model with its textured interior surface. The numerical analysis is carried out to study the for both plain bearings types with a textured a non-textured surface thus to see the improvement of the plain bearing hydrodynamic performances, as well as the fluid flow behavior in motion. The analysis is performed by solving the continuity equation of Navier-Stokes, by the finite volume method, using CFD code. The numerical results show that the most important hydrodynamic characteristics such as pressure, minimal film thickness, friction torque, leakage flow, are significant for the textured plain bearing under rotational v...
International Journal of Surface Engineering and Interdisciplinary Materials Science
Surface texturing technology has been newly explored technique in the tribological domain, and th... more Surface texturing technology has been newly explored technique in the tribological domain, and this method is carried out to improve the displacement and performance of the Babbitt plain journal bearing with a textured surface. The numerical analysis is carried out to study the textured surface effect on the elastic behaviour of the journal bearing. First, the bearing is tested without texture; second, it is examined completely textured, by varying the operating parameters of the bearing. The performance is observed in a pressure profile, displacement, and shear stress, generated for each combination of radial loads, and rotational velocity of the shaft. The numerical modelling is used by solving the displacement equations by the finite element method to analyses bearing displacement for severe operating conditions. The results show that the elastic deformations for textured bearing, are important and preponderant for higher rotational speeds, and shear stresses are important for hi...
Uploads
Papers