A study on the performance of a magnetic fluid based hydrodynamic short porous journal bearing

Abstract

An endeavour has been made to investigate the performance of a hydrodynamic short porous journal bearing under the presence of a magnetic fluid lubricant. The associated Reynolds equation for the fluid pressure is solved with appropriate boundary conditions. To get the fluid film pressure leading to the calculation of the load carrying capacity .Further, friction is computed. Results presented in graphical form indicate that the magnetic fluid turns in a better performance of the bearing system compared to the case of the conventional lubricant. It is clearly seen that the load carrying capacity increases nominally while the co-efficient of friction decreases significantly. Besides, it is seen that the bearing can support a load even in the absence of flow. This study may offer an additional degree of freedom from design point of view in terms of the forms of the magnitude of the magnetic field.