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Evaluation of Linear Stability of Porous Hydrodynamic Journal Bearings under Micropolar Lubrication Condition


Affiliations
1 Department of Mechanical Engineering, Bipradas Pal Chowdhury Institute of Technology, Krishnanagar-741101, India
2 Department of Engineering and Technological Studies, Kalyani University, Kalyani-741235, India
3 Department of Mechanical Engineering, Kalyani Govt. Engineering College, Kalyani-741235, India
     

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This theoretical investigation has been performed to explore the dynamic performance characteristics of micropolar lubricated porous hydrodynamic journal bearing considering slip effect along tangential direction. The properties of finite porous hydrodynamic journal bearings and micropolar lubricant and the Beavers-Joseph slip model are combined to reestablish the modified Reynolds equation. Dynamic nature of the bearing can be obtained by implementation of the first order perturbation technique in bearing properties. This research work on micropolar lubricated porous hydrodynamic journal bearing in dynamic condition has produced superior linear stability as compared to lubrication using Newtonian fluid.

Keywords

Micropolar lubricant; critical mass parameter; whirl ratio; porous bearing.
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  • Evaluation of Linear Stability of Porous Hydrodynamic Journal Bearings under Micropolar Lubrication Condition

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Authors

Ujjal Baidya
Department of Mechanical Engineering, Bipradas Pal Chowdhury Institute of Technology, Krishnanagar-741101, India
Sanjoy Das
Department of Engineering and Technological Studies, Kalyani University, Kalyani-741235, India
Santanu Das
Department of Mechanical Engineering, Kalyani Govt. Engineering College, Kalyani-741235, India

Abstract


This theoretical investigation has been performed to explore the dynamic performance characteristics of micropolar lubricated porous hydrodynamic journal bearing considering slip effect along tangential direction. The properties of finite porous hydrodynamic journal bearings and micropolar lubricant and the Beavers-Joseph slip model are combined to reestablish the modified Reynolds equation. Dynamic nature of the bearing can be obtained by implementation of the first order perturbation technique in bearing properties. This research work on micropolar lubricated porous hydrodynamic journal bearing in dynamic condition has produced superior linear stability as compared to lubrication using Newtonian fluid.

Keywords


Micropolar lubricant; critical mass parameter; whirl ratio; porous bearing.

References





DOI: https://doi.org/10.24906/isc%2F2023%2Fv37%2Fi1%2F222815