Discussion: “A Global Approach of Thermal Effects Including Pad Deformations in Tilting-Pad Journal Bearings Submitted to Unbalance Load” (Fillon, M., Desbordes, H., Freˆne, J., and Chan Hew Wai, C., 1996, ASME J. Tribol., 118, pp. 169–174)

1997 ◽  
Vol 119 (1) ◽  
pp. 227-227
Author(s):  
Hiromu Hashimoto
Keyword(s):  
Thermal Effects ◽  
Journal Bearings ◽  
Global Approach ◽  
Tilting Pad ◽  
Tilting Pad Journal Bearings

Experimental Study of Thermal Effects in Tilting-Pad Journal Bearings at High Operating Speeds

1996 ◽  
Vol 118 (3) ◽  
pp. 532-538 ◽  
Author(s):  
C. Bouchoule ◽  
M. Fillon ◽  
D. Nicolas ◽  
F. Barresi
Keyword(s):  
Thermal Effects ◽  
Applied Load ◽  
Journal Bearings ◽  
Test Machine ◽  
Power Losses ◽  
Test Bed ◽  
Tilting Pad ◽  
Oil Flow ◽  
Bearing Design ◽  
Tilting Pad Journal Bearings

In this work, a test machine, experimental results and the comparison between theoretical TEHD results and experimental data are presented. The tested bearings are located in two speed increasing and reduction gearboxes (back-to-back test bed). The shaft is driven by a 1 MW motor. The bearing diameter and the bearing length are equal to 160 mm. The rotational speed varies from 2700 rpm (22 m/s) to 11,880 rpm (100 m/s). The applied load is up to 88,000 N. Temperatures in the bearing (film/pad interface, oil, pad and housing), power losses and oil flow are measured. The influence of the bearing design and of the pivot position on the pad is analyzed.

A new dynamic mesh algorithm for studying the 3D transient flow field of tilting pad journal bearings

2016 ◽  
Vol 230 (12) ◽  
pp. 1470-1482 ◽  
Author(s):  
Mengxuan Li ◽  
Chaohua Gu ◽  
Xiaohong Pan ◽  
Shuiying Zheng ◽  
Qiang Li
Keyword(s):  
Flow Field ◽  
Equilibrium Position ◽  
Transient Flow ◽  
Journal Bearings ◽  
Dynamic Mesh ◽  
Static Equilibrium ◽  
Time Step ◽  
Tilting Pad ◽  
Grid Nodes ◽  
Tilting Pad Journal Bearings

A new dynamic mesh algorithm is developed in this paper to realize the three-dimensional (3D) computational fluid dynamics (CFD) method for studying the small clearance transient flow field of tilting pad journal bearings (TPJBs). It is based on a structured grid, ensuring that the total number and the topology relationship of the grid nodes remain unchanged during the dynamic mesh updating process. The displacements of the grid nodes can be precisely recalculated at every time step. The updated mesh maintains high quality and is suitable for transient calculation of large journal displacement in FLUENT. The calculation results, such as the static equilibrium position and the dynamic characteristic coefficients, are consistent with the two-dimensional (2D) solution of the Reynolds equation. Furthermore, in the process of transient analysis, under conditions in which the journal is away from the static equilibrium position, evident differences appear between linearized and transient oil film forces, indicating that the nonlinear transient calculation is more suitable for studying the rotor-bearing system.

scholarly journals Characterization of High-Power Turbomachinery Tilting Pad Journal Bearings: First Results Obtained on a Novel Test Bench

Lubricants ◽  
2018 ◽  
Vol 6 (1) ◽  
pp. 4 ◽  
Author(s):  
Enrico Ciulli ◽  
Paola Forte ◽  
Mirko Libraschi ◽  
Lorenzo Naldi ◽  
Matteo Nuti
Keyword(s):  
High Power ◽  
Test Bench ◽  
Journal Bearings ◽  
Tilting Pad ◽  
First Results ◽  
Tilting Pad Journal Bearings
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