Influence of pad geometry and method of oil supply on the thermal state of GTE rotor tilting-pad journal bearing

High heat generation in the hydrodynamic wedge is one of main factors limiting application pad journal bearings as for rotors aircraft gas turbine engines. The goal research to study influence oil supply method on bearing thermal state and determine design reducing temperature. was carried out with use diameters 100320 mm different supply: through dispensing grooves pads, nozzles inter-pad space, using lead-in chamfers bypass channels. tasks posed were solved by volumetric geometric models tools computational fluid dynamics ANSYS CFX package which differential equations describing model are finite element method. patterns temperature pressure distribution over surface lower, most loaded obtained various options geometry pads; values load carrying capacity, maximum working gap, mass flow elements supply; dependences static performance distance between shaft nozzles. Oil made pads a factor that negatively affects state, associated so-called locking gap. It shown implementation space more efficient. chamfer plain inserts simplifies solutions described make it possible reduce 36 degrees Celsius.