Finite-element coupled analyses of the Reynolds and Hagen–Poiseuille equations to calculate pressure and flow of fluid dynamic bearings with a recirculation channel

Kang, Chiho; Jung, Kyungmoon; Jang, Gunhee

doi:10.1016/j.triboint.2018.07.008

Cited by 12 publications

(4 citation statements)

References 22 publications

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“…And check result of the meshing is qualified. Table 2 displays the battery's thermal parameters., where, x  , y  , z  is the x, y, z-average thermal conductivity of the three directions, respectively, and the cooling fluid parameters [35,37] are shown in Table 3.…”

Section: Geometric Model Of Liquid Cooling Systemmentioning

confidence: 99%

Research on the heat dissipation performances of vehicle power battery pack with liquid cooling system

Yin,

Ni,

Shi

et al. 2024

Preprint

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Lithium-ion power batteries have become integral to the advancement of new energy vehicles. However, their performance is notably compromised by excessive temperatures, a factor intricately linked to the batteries' electrochemical properties. To optimize lithium-ion battery pack performance, it is imperative to maintain temperatures within an appropriate range, achievable through an effective cooling system. This paper delves into the heat dissipation characteristics of lithium-ion battery packs under various parameters of liquid cooling systems, employing a synergistic analysis approach. The findings demonstrate that a liquid cooling system with an initial coolant temperature of 15℃ and a flow rate of 2L/min exhibits superior synergistic performance, effectively enhancing the cooling efficiency of the battery pack. As the charge/discharge rate increases, battery heating power escalates, resulting in a notable rise in temperature and synergy angle. Optimal cooling efficiency is achieved with three cooling channel inlets, minimizing the temperature difference across the battery pack.

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Section: Geometric Model Of Liquid Cooling Systemmentioning

confidence: 99%

Research on the heat dissipation performances of vehicle power battery pack with liquid cooling system

Yin,

Ni,

Shi

et al. 2024

Preprint

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“…(Li and An, 2017). If there were herringbone grooves in the rotating end face of a bearing, the significant dynamic pressure effect could be found, and a good lubrication performance was produced (Yao and Tan, 2006; Kang et al , 2018). However, thrust bearings are often shaft-misaligned because of electromagnetic forces or mounting accuracy.…”

Section: Introductionmentioning

confidence: 99%

Flow characteristic analysis of a herringbone groove thrust bearing with shaft misalignment

Wang

Ran

Dai

et al. 2022

ILT

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Purpose Herringbone groove thrust bearings are typically used in high-speed, light-load applications, such as spindle motors for hard disk drives. In the past researches, the effect of shaft misalignment was little considered. This study aims to reveal effects of shaft misalignment on the microscopic flow regime in the water-lubricated herringbone groove thrust bearing. Design/methodology/approach The liquid film in a thrust herringbone groove bearing was investigated by computational fluid dynamics. The effects of micro-grooves on the flow field were carefully explored. Two-dimensional liquid films at four different sites were examined for obtaining the rich flow field properties. Findings The distributions of pressure, temperature and water vapor volume fraction were obtained, the micro hydrodynamic effects were formed by the herringbone grooves and the effects of the shaft misalignment on lubrication and sealing performance could be found. Originality/value The influence of misalignment on the herringbone groove thrust bearing performance was investigated in detail. The obtained results could give the reference guideline for the bearing design.

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“…The early research was concentrated on the stability of Hagen-Poiseuille ow with reference to the choice of boundary conditions. In spite of extensive research on the stability of the ow with the no-slip boundary condition, in order to understand the stability of uid ows, Kang C et.al [6] had pioneered these experiments with the support of Hagen-Poiseuille ow. The main focus of current study is to analyze the relation between temperature distribution and the length of the pipe for dierent uids such as air, hydrogen, water, milk, mercury, glycerin and study them graphically where temperature is a transcendental variable.…”

mentioning

confidence: 99%

“…× (10)6 T × (10) 6 T × (10) 6 T × (10) 6 T × (10) 6 × (10) 6 T × (10) 6 T × (10) 6 T × (10) 6 T × (10)6 …”

mentioning

confidence: 99%

Hagen-Poiseuille Flow in Circular Cylinder when Temperature is Exponential and Sinusoidal Function of Length

Khandelwal¹,

Agarwal²

2021

Advances in the Theory of Nonlinear Analysis and Its Application

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In this paper, we have investigated the heat transfer in a circular cylindrical pipe for Hagen-Poiseuille ow and used MATLAB as a scientic tool to plot the graphs. The calculations for the axial heat conduction and the temperature gradient have been performed for both upstream and downstream ows. In this experiment, the results are plotted graphically for the dierent uids like Air, Water, Milk, Glycerin and Mercury. The physical trends of the plotted curves represent the values of heat transfer that were dierent in Hydrogen and Air; on the contrary rest of the uids were behaving similarly when temperature was taken as an exponential function and for sinusoidal function all the uids were behaving in a similar manner.

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Finite-element coupled analyses of the Reynolds and Hagen–Poiseuille equations to calculate pressure and flow of fluid dynamic bearings with a recirculation channel

Cited by 12 publications

References 22 publications

Research on the heat dissipation performances of vehicle power battery pack with liquid cooling system

Research on the heat dissipation performances of vehicle power battery pack with liquid cooling system

Flow characteristic analysis of a herringbone groove thrust bearing with shaft misalignment

Hagen-Poiseuille Flow in Circular Cylinder when Temperature is Exponential and Sinusoidal Function of Length

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