Table 1 Summary of articles employing commercial computer codes.
Ref | Technique | Bearing type | Parameter | Analysis/Results |
|---|---|---|---|---|
CFD | Journal bearing with smooth and textured surface | Surface texture, eccentricity ratio and friction force | Condition of light loading reduced frictional force and increased minimum film thickness; under heavy loading circumstances, a larger pressure zone reduces frictional force | |
CFD | Central circumferential groove of hydrodynamic journal bearing | Bearing carrying capacity, cavitation zone and vapor fraction | The depth of the groove influences the load zone, bearing carrying capacity, cavitation zone, and vapor fraction | |
CFD and FSI | Hydrodynamic journal bearing | length to diameter ratio, eccentricity ratios, and pressure | The FSI technique is utilized to find the pressure, stress, and deformation of the hydrodynamic journal bearing | |
CFD | Journal bearing with bingham fluid | Eccentricity ratio, yield stress | Fluent software examined real and theoretical data for Newtonian and Bingham lubricants and found good agreement. The influence of yield stress on the journal bearing is similarly evaluated to be minor for low eccentricity ratios | |
CSD and CFD | Full \(360^{o}\) journal bearing | Deformation and stress distribution | According to the article, these strategies are helpful for The finite element method (FEM) was utilized to calculate the stress distribution. Determine the surface deformation of the bearing under static load. The effects of resulting forces are also examined. The modeling of elasto-hydrodynamic lubrication has been validated with standard lubrication results | |
CFD-FSI | Journal bearing | Deformation, eccentricity ratios and speeds | Develop models for various eccentricity ratios and speeds to investigate the relationship between the elastic behavior of the bearing and the fluid. This procedure produced accurate performance of the bearing | |
CFD and FSI | Thermo-hydrodynamic and thermo-elastohydrodynamic analysis of full journal bearing | Pressure, temperature and velocity distribution in the fluid film, and bearing surface deformation | The characteristics under static load conditions are determined using the finite volume and finite element methods. The distortion caused by pressure is an essential variable in determining bearing behavior | |
COMSOL models | Hydrodynamic bearing | Pressure distribution, eccentricity ratio | Pressure distribution is determined on infinite (short and long) bearings under steady state conditions. It was expected that growing pressure is proportional to eccentricity ratio, and pressure increases in the direction of eccentricity | |
ANSYS, MATLAB software | Bush type journal bearing | Temperature | It is shown that there are approximately 12% differences between the two procedures. However, Ansys provided a more exact result than the numerical method. | |
CFD | Journal bearing | Pressure, temperature viscosity, L/D ratio, rotational speed, Eccentricity ratio, pressure distribution | Software results were validated using numerical data obtained from the Raimondi and Boyd chart approach. It has been proposed that increasing temperature raises pressure while reducing attitude angle | |
CFD (Gambit and using fluent 6.3.26 ) | Plain journal bearing | Pressure distribution, temperature and viscosity | It is noticed that increasing frictional force increases the temperature, lowers viscosity, and the maximum pressure of the lubricant | |
CFD | Circular journal bearing | Pressure and temperature distribution | When the viscosity is held constant, temperature and pressure increase | |
CFD and FSI | Infinitely long journal bearing | Pressure and temperature variation | It was determined that maximum pressure occurred closer to the region of a minimum film thickness | |
CFD | Journal bearing | Pressure distribution, friction force, friction coefficient | It is observed that dimple is good for lubricating and minimizes friction force, but there is a loss of load capacity | |
CFD | Journal bearing | 3D transient flow simulation, load capacity and bearing dynamic coefficient | The CFD results were quite consistent with the experimental results obtained from the test rotor-bearing system | |
FEM | Gas journal bearing | Rotation speed, eccentricity ratio and supply pressure | Increasing the eccentricity ratio, supply pressure, and rotation speed at a small average gas film thickness can help improve load capacity and stiffness. The most effective way of reducing attitude angle is to increase supply pressure |
