The Impact of Convective Fluid Inertia Forces on Operation of Tilting-Pad Journal Bearings

Table 1

Key parameters of analysis.

Parameter	Value
	TPB120	TPB500
Geometrical properties
Number of tilting-pads	4	5
Nominal diameter, mm	120	500
Tilting-pad thickness, mm	20	72.5
Bearing width, mm	72	350
Angular length of tilting-pads, degrees	70	56
Relative position of tilting-pad support	0.6	0.6
Radial clearance, µm	108	300
Preload	0.50	0.23
Static analysis parameters
Bearing load, kN	175–438	175–438
Rotational speed, rpm	6000–15000	1500–3000
Lubricant supply temperature, °C	50	50
Lubricant flow rate, l/s	1.5	7.0
Lubricant properties
Lubricant	ISO VG 32	ISO VG 32
Lubricant density kg/m^3	865 @ 40°C	844 @ 40°C
Lubricant specific heat capacity kJ/(kg K)	2.0 @ 20°C	2.17 @ 70°C
Thermal boundaries and material properties
Lubricant thermal conductivity, W/(m K)	0.13	0.13
Pad and journal thermal conductivity, W/(m K)	45	45
Pad ambient temperature, °C	60	65