The effect of slip velocity on the ferrofluid based squeeze film in longitudinally rough conical plates

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

doi:10.5937/jsscm1602018p

Cited by 6 publications

(4 citation statements)

References 28 publications

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“…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. Recently, Patel and Deheri (2016) have examined the effect of slip velocity on the performance of a magnetic fluid based squeeze film in conical plates considering the longitudinal roughness pattern.…”

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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“…Andharia and Deheri [21] studied the effect of ferrofluid for longitudinally rough elliptical plates. Patel and Deheri [22] analysed the combined influence of ferrofluid and slip velocity for longitudinally rough conical plates and found that load capacity gets enhanced due to the magnetization and standard deviation. Shah and Patel [23] studied the influence of ferrofluid for a rotating sphere with a radially rough lower flat plate and shown that the overall performance of the sphere plate is improved due to a variable magnetic field.…”

Section: Introductionmentioning

confidence: 99%

Neuringer-Roseinweig Model Based Longitudinally Rough Porous Circular Stepped Plates in the Existence of Couple Stress

2020

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This study intents to scrutinize the impact of ferrofluid in the presence of couple stress for longitudinally rough porous circular stepped plates. The influence of longitudinal surface roughness is developed using the stochastic model of Christensen and Tonder for nonzero mean, variance and skewness. Neuringer-Roseinweig model is adopted for the influence of ferrofluid. The couple stress effect is characterized by Stoke’s micro continuum theory. The modified Reynolds’ type equation is stochastically averaged and solved by no-slip boundary conditions. The closed form solutions for load bearing capacity and film pressure are obtained as a function of different parameters and plotted graphically. It is perceived that the load capacity gets elevated owing to the combined influence of magnetization and couple stress when the proper choice of roughness parameters (negatively skewed, standard deviation) is in place. Porosity and roughness (positively skewed) adversely affect bearing’s performance. The graphical and tabular analysis shows that there is a significant growth in load bearing capacity compared to the conventional lubricant case.

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“…The squeeze films with a magnetic fluid base had an impact on conical plates which has been studied by a lot of researchers using a number of different parameters. For example, ) used porosity, (Patel and Deheri 2013) studied the model using transverse roughness and porosity, (Andharia and Deheri 2010) worked on longitudinal roughness, (Patel and Deheri 2016) studied it by taking into account longitudinal roughness with slip velocity and ) worked with longitudinal roughness as well as deformation effect. The design of a structure from porous as well as fluid layer is derived by (Beavers and Joseph 1967).…”

Section: Introductionmentioning

confidence: 99%

Influence of Ferrofluid Lubrication on Longitudinally Rough Truncated Conical Plates with Slip Velocity

Munshi

Patel

Deheri

2019

Math. J. Interdiscip. Sci.

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The study focuses on analyzing the effect of slip velocity in the case of a Ferrofluid squeeze film when the surface of truncated cone-shaped plates has a longitudinal roughness. Each oblique to the bottom plate was utilized by the external magnetic field. The bearing surface has a roughness that is designed with the help of a random stochastic variable having a nonzero mean, skewness and variance. The load carrying ability of a bearing system’s surface is determined by calculating the dispersal of pressure in the system, which is calculated by using the associated stochastically average Reynolds’ equation. The graphs obtained from the study shows that there is a correlation between the longitudinal surface roughness and the bearing system performance. The magnetic fluid lubrication has a positive impact on a system’s bearing capacity. However, the load bearing capacity declines as a result of the effect of slip. A high negative skewness of the surface roughness also has a positive impact on a bearing’s load carrying capacity. One interesting finding shows that contrasting to the results of transverse roughness, standard deviation positively impacts the load bearing capacity. This investigation suggests despite the im-portance of aspect ratio and semi vertical angle is significant for performance enhancement, it is also essential to maintain the slip at the lowest level.

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The effect of slip velocity on the ferrofluid based squeeze film in longitudinally rough conical plates

Cited by 6 publications

References 28 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

Neuringer-Roseinweig Model Based Longitudinally Rough Porous Circular Stepped Plates in the Existence of Couple Stress

Influence of Ferrofluid Lubrication on Longitudinally Rough Truncated Conical Plates with Slip Velocity

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