Numerical Calculation Analysis and Characteristic Research on Windage Loss of Oil-Jet Lubricated Aviation Gear Pair

Table 2

Parameters of the numerical calculation model.

Description	Parameter value
Dimension	3D
Equation control calculation method	Pressure-based separation solver
Time	Transient
Gravity	Exist (- direction)
Velocity formulation	Absolute
Multiphase model	VOF model (implicit body force activated); Primary phase: air; Secondary phase: oil
Viscous model	SST -ω
Energy model	On
Inlet boundary	Velocity-inlet; Oil-jet velocity: 15 m/s; Inlet pressure: 0.31 MPa
Outlet boundary	Pressure-outlet; Relative pressure: 0 MPa
Wall condition	Nonslip
Dynamic mesh	Smoothing and local remeshing
Discretization schema	Pressure velocity coupling: coupled; Gradient: least squares cell-based; Pressure: PRESTO; N-S formulation: finite volume method; Spatial discretization: second order upwind; Volume fraction: CICSAM
Solution controls	Courant number: 10; Momentum relaxation factor: 0.3; Pressure relaxation factor: 0.2
Initialization	Standard initialization; Patch volume fraction of phase 2: 0
Time step	2-6 s