Jenkins model based magnetic squeeze film in curved rough circular plates considering slip velocity: A comparison of shapes

Patel, Jignesh P.; Deheri, G. M.

doi:10.5937/fmet1502144p

Cited by 5 publications

(4 citation statements)

References 42 publications

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“…Here, the negatively skewed roughness increased the load carrying capacity and temperature as well. Patel and Deheri (2015) dealt with the comparison of the performance of a Jenkins model based magnetic squeeze film in curved rough circular plates considering slip velocity for different shapes of the surfaces. It was observed that for the exponential shape the combined effect of magnetism and negatively skewed roughness was relatively more, even for higher values of slip parameter.…”

Section: Introductionmentioning

confidence: 99%

Ferrofluid Lubrication of a Rough Porous Secant-Shaped Slider Bearing With Slip Velocity

Patel¹,

Deheri²,

Patel³

2017

JSSCM

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This article aims to discuss the combined effect of roughness and slip velocity on the performance of a ferrofluid based rough porous secant shape slider bearing. The slip model of Beavers and Joseph has been deployed to study the effect of velocity slip while the stochastic model of Christensen and Tonder has been used to calculate the effect of surface roughness. The concerned statistically averaged Reynolds' type equation is solved with suitable boundary conditions to obtain the pressure distribution leading to the calculation of load carrying capacity. Further, the expression for friction and the position of center of pressure are obtained. It is observed that the bearing suffers due to surface roughness. However, this adverse effect can be reduced considerably by the ferrofluid lubrication taking the slip parameter at minimum. In this type of bearing system, the combination of slip velocity and skewness may play a crucial role in augmenting the bearing performance. Besides, the friction is found to be mostly decreasing or nominally increasing.

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Section: Introductionmentioning

confidence: 99%

Ferrofluid Lubrication of a Rough Porous Secant-Shaped Slider Bearing With Slip Velocity

Patel¹,

Deheri²,

Patel³

2017

JSSCM

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“…This fundamental question has been addressed while presenting the comparison. In view of Murti [37], Shah and Bhat [2] and Patel and Deheri [38], the thickness profile h of the film is assumed as…”

Section: Introductionmentioning

confidence: 99%

A comparative study of ferrofluid lubrication on double-layer porous squeeze curved annular plates with slip velocity

Patel

Deheri

2022

Acta Polytech

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This article makes an effort to present a comparative study on the performance of a Shliomis model-based ferrofluid (FF) lubrication of a porous squeeze film in curved annular plates taking slip velocity into account. The modified Darcy’s law has been adopted to find the impact of the doublelayered porosity, while the slip velocity effect has been calculated according to Beavers and Joseph’s slip conditions. The modified Reynolds equation for the double-layered bearing system is solved to compute a dimensionless pressure profile and load-bearing capacity (LBC). The graphical results of the study reveal that the LBC increases in the case of magnetization, volume concentration and upper plate’s curvature parameter while it decreases with other parameters for both the film thickness profile. A comparative study suggests that the exponential film thickness profile is more suitable to enhance LBC for the annular plates lubricated by ferrofluid, including the presence of a slip. The study shows that the slip model performed quite well and there is a potential for improving the performance efficiency. Besides, multiple methods have been presented to enhance the performance of the above mentioned bearing system by selecting various combinations of parameters governing the system.

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“…It was found that load capacity and response time increased with increasing values of the eccentricity ratio in all three models. According to Patel and Deheri, 21 curved rough circular surfaces squeeze films based on the Jenkins model were compared for various shapes of the surfaces such as exponential, hyperbolic, and secant. It was evident from the results that the Jenkins model modifies performance when associated with the NR model.…”

Section: Introductionmentioning

confidence: 99%

Combined effect of circumferential roughness and squeeze velocity on ferrofluid squeeze film with rotating sphere and rough plate

Patel¹,

Kataria²

2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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Based on the Jenkins model for ferrofluid flow regarding the performance of squeeze-film lubrication between rotating upper spherical surface and circumferentially rough lower plate is presented. Here, for hydrodynamic lubrication, we have adopted the ferrohydrodynamic theory. Further, using Christensen’s stochastic model, surface roughness is examined. In the paper, in the presence of a radially variable magnetic field, rotations of both the upper and lower surfaces as well as roughness of the surface, the Reynolds type equation for the squeeze-film bearing is established. By using the Reynolds type equation, expressions for the non-dimensional film pressure and load-carrying capacity are obtained for circumferential roughness pattern. Neuringer–Rosensweig (NR) model results are computed using the Jenkins model. The results show that non-dimensional film pressure increases remarkably when the non-dimensional radial parameter ( R) increases. Also, as the nominal minimum film thickness increases, load-carrying capacity decreases in the Jenkins model. However, as a result of Tables 5 and 6, the non-dimensional load-carrying capacity of the Jenkins model is improved compared to that of the NR model.

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Jenkins model based magnetic squeeze film in curved rough circular plates considering slip velocity: A comparison of shapes

Cited by 5 publications

References 42 publications

Ferrofluid Lubrication of a Rough Porous Secant-Shaped Slider Bearing With Slip Velocity

Ferrofluid Lubrication of a Rough Porous Secant-Shaped Slider Bearing With Slip Velocity

A comparative study of ferrofluid lubrication on double-layer porous squeeze curved annular plates with slip velocity

Combined effect of circumferential roughness and squeeze velocity on ferrofluid squeeze film with rotating sphere and rough plate

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