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 center,
  • 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
• 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 bering characteristics
• Consideration of the following effects are possible depending on the type of analysis:
  • 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 2 pockets and a wide circumferential groove in the top pad.

MADYN 2000 plot of bearing load and static results

MADYN 2000 plot of rotordynamic coefficients

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MADYN 2000 plot of a bearing with fixed pads

 

 

 

 

 

 

 

 

 

MADYN 2000 clearance plot. The bearing has 2 pockets and a wide circumferential groove in the top pad. 

 

 

 

 

 

 

MADYN 2000 plot of bearing load and static results

 

 

 

 

 

 

 

   

 

 

 

 

MADYN 2000 plot of rotordynamic coefficients