TY - JOUR
T1 - Model formulation of churning losses in cylindrical roller bearings based on numerical simulation
AU - Gao, Wenjun
AU - Nelias, Daniel
AU - Boisson, Nicolas
AU - Lyu, Yaguo
N1 - Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2018/5
Y1 - 2018/5
N2 - A numerical-based fluid mechanics model is proposed to predict churning losses in cylindrical roller bearings, which is caused by the rotation and the translation of the rollers in the bearing cavity. The Computational Fluid Dynamics (CFD) method is conducted to quantify the influence of various factors on churning losses, including operating conditions, roller geometry parameters, and fluid properties. One configuration with several in-line finite-length circular cylinders sandwiched by two flat walls is analyzed in one-phase environment, which represents a simplified approache. The results indicate that the roller orbital speed, the presence of adjacent rollers, and the rings have a significant impact on the churning moments. Finally a formulation is proposed for churning losses prediction in cylindrical roller bearings. This is of particular interest for high-speed applications where churning losses may represent up to 50% of the total power dissipated.
AB - A numerical-based fluid mechanics model is proposed to predict churning losses in cylindrical roller bearings, which is caused by the rotation and the translation of the rollers in the bearing cavity. The Computational Fluid Dynamics (CFD) method is conducted to quantify the influence of various factors on churning losses, including operating conditions, roller geometry parameters, and fluid properties. One configuration with several in-line finite-length circular cylinders sandwiched by two flat walls is analyzed in one-phase environment, which represents a simplified approache. The results indicate that the roller orbital speed, the presence of adjacent rollers, and the rings have a significant impact on the churning moments. Finally a formulation is proposed for churning losses prediction in cylindrical roller bearings. This is of particular interest for high-speed applications where churning losses may represent up to 50% of the total power dissipated.
KW - Churning moment
KW - Cylindrical roller bearings
KW - Power losses
KW - Roller orbital speed
UR - https://www.scopus.com/pages/publications/85042313603
U2 - 10.1016/j.triboint.2018.02.003
DO - 10.1016/j.triboint.2018.02.003
M3 - 文章
AN - SCOPUS:85042313603
SN - 0301-679X
VL - 121
SP - 420
EP - 434
JO - Tribology International
JF - Tribology International
ER -