Investigation of the Fluid-Solid Thermal Coupling for Rolling Bearing under Oil-Air Lubrication

An excellent oil-air lubrication system helps to improve rolling bearing's working conditions and thus extend its service life span. Flowing and heat dissipating characteristics of oil-air media inside bearing chamber are very complicated due to the fluid-solid thermal coupling. Effects of flui...

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Main Authors: Baohong Tong, Guangyu Wang, Xiaoqian Sun
Format: Article
Language:English
Published: SAGE Publishing 2015-02-01
Series:Advances in Mechanical Engineering
Online Access:https://doi.org/10.1155/2014/835036
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spelling doaj-31aee96d252746f49bdeb0dfbd3f98752020-11-25T02:58:17ZengSAGE PublishingAdvances in Mechanical Engineering1687-81322015-02-01710.1155/2014/83503610.1155_2014/835036Investigation of the Fluid-Solid Thermal Coupling for Rolling Bearing under Oil-Air LubricationBaohong TongGuangyu WangXiaoqian SunAn excellent oil-air lubrication system helps to improve rolling bearing's working conditions and thus extend its service life span. Flowing and heat dissipating characteristics of oil-air media inside bearing chamber are very complicated due to the fluid-solid thermal coupling. Effects of fluid-solid thermal coupling are neglected in all previous simulation efforts. A numerical model for simulating the flowing inside bearing chamber is developed here based on an analytical fluid-solid thermal coupling method under oil-air lubrication. The effects of the coupling of air-oil flowing and heat dissipating in bearing chamber are predicted. The simulation results indicate that the coupling is influential in the performances of the flowing in rolling bearing under oil-air lubrication. With consideration of the coupling, the turbulence intensity, the turbulent kinetic energy, and the temperature of the rollers are predicted to be lower because part of the heat is carried out by the flow due to the heat transfer. On the contrary, the turbulent dissipation rate gets higher when considering the coupling effects. It is also interesting that the coupling effects have little influence on the flow pressure and the velocity, which is manifested by a little higher predicted value when considering the coupling.https://doi.org/10.1155/2014/835036
collection DOAJ
language English
format Article
sources DOAJ
author Baohong Tong
Guangyu Wang
Xiaoqian Sun
spellingShingle Baohong Tong
Guangyu Wang
Xiaoqian Sun
Investigation of the Fluid-Solid Thermal Coupling for Rolling Bearing under Oil-Air Lubrication
Advances in Mechanical Engineering
author_facet Baohong Tong
Guangyu Wang
Xiaoqian Sun
author_sort Baohong Tong
title Investigation of the Fluid-Solid Thermal Coupling for Rolling Bearing under Oil-Air Lubrication
title_short Investigation of the Fluid-Solid Thermal Coupling for Rolling Bearing under Oil-Air Lubrication
title_full Investigation of the Fluid-Solid Thermal Coupling for Rolling Bearing under Oil-Air Lubrication
title_fullStr Investigation of the Fluid-Solid Thermal Coupling for Rolling Bearing under Oil-Air Lubrication
title_full_unstemmed Investigation of the Fluid-Solid Thermal Coupling for Rolling Bearing under Oil-Air Lubrication
title_sort investigation of the fluid-solid thermal coupling for rolling bearing under oil-air lubrication
publisher SAGE Publishing
series Advances in Mechanical Engineering
issn 1687-8132
publishDate 2015-02-01
description An excellent oil-air lubrication system helps to improve rolling bearing's working conditions and thus extend its service life span. Flowing and heat dissipating characteristics of oil-air media inside bearing chamber are very complicated due to the fluid-solid thermal coupling. Effects of fluid-solid thermal coupling are neglected in all previous simulation efforts. A numerical model for simulating the flowing inside bearing chamber is developed here based on an analytical fluid-solid thermal coupling method under oil-air lubrication. The effects of the coupling of air-oil flowing and heat dissipating in bearing chamber are predicted. The simulation results indicate that the coupling is influential in the performances of the flowing in rolling bearing under oil-air lubrication. With consideration of the coupling, the turbulence intensity, the turbulent kinetic energy, and the temperature of the rollers are predicted to be lower because part of the heat is carried out by the flow due to the heat transfer. On the contrary, the turbulent dissipation rate gets higher when considering the coupling effects. It is also interesting that the coupling effects have little influence on the flow pressure and the velocity, which is manifested by a little higher predicted value when considering the coupling.
url https://doi.org/10.1155/2014/835036
work_keys_str_mv AT baohongtong investigationofthefluidsolidthermalcouplingforrollingbearingunderoilairlubrication
AT guangyuwang investigationofthefluidsolidthermalcouplingforrollingbearingunderoilairlubrication
AT xiaoqiansun investigationofthefluidsolidthermalcouplingforrollingbearingunderoilairlubrication
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