Skip to main content

Table 1 Computational conditions of three different restrictors

From: Numerical Simulation and Experimental Verification of the Stiffness and Stability of Thrust Pad Aerostatic Bearings

Design variable Orifice restrictor Multiple restrictors Porous restrictors
Inlet pressure Pin/Pa 5 5 × 105 5 × 105
Outlet pressure Pout/Pa 0 0 0
Operating pressure Po/Pa 1 × 105 1 × 105 1 × 105
Gas density ρ/(kg/m3) 1.189 1.189 1.189
Dynamic viscosity μ/(Ns/m2) 1.8 × 10−5 1.8 × 10−5 1.8 × 10−5
Bearing diameter D/mm 50 50 50
Orifice diameter d/mm 0.05−0.15 0.05−0.15
Groove width w g /mm 0.20
Groove depth d g /mm 0.10
Groove length l g /mm 1.50
Viscous resistance coefficient d r /m−2 8 × 1013−1.6 × 1014
Inertia resistance coefficient c r /m−1 2.5 × 107
Porosity γ 0.18