PAFEC-EHL 2.2 - Functional Overview
- Mass continuity in the fluid film based on Reynolds equation with an implicit time
integration scheme giving a formulation in pressure and journal articulation.
- Range of linear and quadratic triangular and quadrilateral fluid element types.
- Arbitrary spatial discretisation of the fluid film and structural housing surface.
- Inclusion of inertia or other (non-fluid) loads in the bearing housing deformation at
each time step.
- Arbitrary specification of the initial clearance over the fluid film.
- Time dependent specification of journal translation and tilt or applied forces and moments.
- Rotating pressures simulating journal oil supply.
- Mass conserving and quasi-static cavitation algorithms. Sommerfeld boundary conditions
- Stochastic or general 3D surface roughness.
- Variable fluid viscosity.
- Solution of the coupled Reynolds and journal equilibrium equations using Newton-Raphson
techniques which accurately determined Jacobian matrices.
- Equation solution options for the full non-symmetric equations (Gaussian or LU reduction)
or sparse frontal solution for rigid housings.
- Flexible control of the incremental/iterative solution including cyclic convergence.
- Full solution restart capabilities.
- Output of pressures, film thicknesses and housing deformations to neutral format nodal
result files or IDEAS universal file.
- Summary of key bearing performance indicators for the last converged cycle including
friction, side flow, power loss etc.
- Film pressures projected onto the bearing surface for stress analysis of the housing.