The fluid film bearing analysis is an integrated part of MADYN 2000. It has the following features:

• Bearing types:
  • Bearings with fixed segments and any curvature radius and centre,
  • tilting pad bearings with consideration of the stiffness and damping of the pivot support against tilting and radial displacement,
  • bearings with hydrodynamic pockets,
  • pressure dam bearings
• Lubricant types:
  • Oils with standard qualities according to ISO,
  • water,
  • user defined fluid properties
• Analysis of the journal position (static equilibrium) and linear rotordynamic coefficients with various methods:
  • Constant mean oil film temperature,
  • variable oil film temperature (includes the solution of the energy equation),
  • analysis according to DIN 31657
• Analysis of nonlinear bearing characteristics
• Non-synchronous characteristics of tilting pad bearings
• Consideration of the following effects are possible depending on the type of analysis:
  • Non-synchronous characteristic of tilting pad bearings,
  • 2-phase flow in cavitation zones considering ambient pressure,
  • turbulence,
  • different oil supply conditions and axial sealing,
  • thermo-elastic deformation,
  • canting
• Import of dimensionless data from ASCII files depending on the Sommerfeld number
• Import of dimensioned data from ASCII files  

MADYN 2000 plot of a bearing with fixed pads

MADYN 2000 clearance plot. The bearing has hydrostatic and hydrodynamic pockets.

MADYN 2000 plot of bearing load and static results

MADYN 2000 plot of rotordynamic coefficients