Abstract
This article presents a numerical simulation of hydrodynamic journal bearing operating with non-Newtonian lubricant. The cubic shear stress fluid model has been used to describe the shear-thinning of lubricant in bearing clearance space. Finite element formulation is used to perform a numerical simulation of the bearing system. The bearing performance parameters, namely film pressure distribution, min. film thickness, film frictional torque, film rotor-dynamic coefficient, etc., are computed for a wide range of external load and fluid nonlinearity index. It has been found that the shear-thinning of lubricant significantly reduces (−31.88%) the minimum film thickness in a journal bearing. However, a substantial enhancement has been observed in most of the direct rotor-dynamic coefficients due to the shear-thinning of the lubricant.
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Kumar, V., Shrivastava, K., Narwat, K., Sharma, S.C. (2021). Performance of Hydrodynamic Journal Bearing Operating with Shear-Thinning Lubricants. In: Kumar, A., Pal, A., Kachhwaha, S.S., Jain, P.K. (eds) Recent Advances in Mechanical Engineering . ICRAME 2020. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-15-9678-0_63
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