Analysis of textured journal bearing with slip boundary condition and pseudoplastic lubricants

Arif, Mohammad; Kango, Saurabh; Shukla, Dinesh Kumar

doi:10.1016/j.ijmecsci.2022.107458

Cited by 22 publications

(23 citation statements)

References 67 publications

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“…To consider the effect of the rise in temperature on the viscosity of the lubricant, the following expression has been used 61,70 :…”

Section: Energy Equationmentioning

confidence: 99%

“…This reduction in lubricant temperature improves lubricant viscosity which increases W of the bearing. 61 The variation in the increment of W at three sliding speeds has been presented in Figure 6D at K = 0.5. The value of K is taken as 0.5, as the maximum variation in W has been observed at low values of K. From Figure 6D, it can be seen that with the increase in the sliding speed, the value of W for all bearing cases increases significantly.…”

Section: Effect On Load Carrying Capacity (W )mentioning

confidence: 99%

“…[38][39][40][41] Researchers have been incorporating micro-textures and SBC on many surfaces ever since the evidence of their benefits in tribological improvements. [54][55][56][57][58][59][60][61][62][63][64] Salant and Fortier 54 numerically investigated the effect of slip-no slip surfaces on the tribological performance of slider bearings. The slip pattern was provided on 0.725 of the total length and 0.75 of the total width of the slider.…”

Section: Introductionmentioning

confidence: 99%

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Effect of sliding speed on the thermohydrodynamic performance of partially slip‐textured slider bearings

Singh

Kango

2023

Lubrication Science

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The present study evaluates the combined use of micro‐textures and ‘wettability gradient’ on the thermohydrodynamic performance of inclined slider bearings. Mass conserving Elrod cavitation model with slip boundary condition has been used to investigate the dimensionless static performance parameters at different convergence ratios and sliding speeds. The most effective location of the wettability gradient and textures has been considered in the present work. It has been observed that with the increase in sliding speed, the load carrying capacity, friction force and volumetric inflow rate of the slip‐textured bearings were improved. The improvements were more pronounced at smaller convergence ratios. Moreover, the slip‐textured bearings exhibited significant improvement in the average pressure and temperature of the lubricant. However, at higher sliding speeds, a substantial increase in friction force and average lubricant temperature was noticed. The square textured slip bearing exhibited maximum improvements towards various performance parameters of the three considered texture shapes.

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“…To consider the effect of the rise in temperature on the viscosity of the lubricant, the following expression has been used 61,70 :…”

Section: Energy Equationmentioning

confidence: 99%

Section: Effect On Load Carrying Capacity (W )mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of sliding speed on the thermohydrodynamic performance of partially slip‐textured slider bearings

Singh

Kango

2023

Lubrication Science

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“…Sin embargo, desde el punto de vista de la transferencia de calor, se presume que los valores de fricción más bajos implican la reducción del área de contacto, pero aumenta el área circundante expuesta al aire ambiente, lo que influye de modo positivo en el rendimiento térmico de los dispositivos disipadores de calor. Dentro de los pocos estudios encontrados sobre el uso de superficies texturizadas para aumentar la transferencia de calor, Arif et al (2022) analizaron las influencias combinadas de la disipación viscosa del calor y la reología no newtoniana del lubricante en los parámetros de rendimiento en un cojinete deslizante microtexturizado. A su vez, Belhocine y Bouchetara (2013) presentaron un nuevo modelo analítico basado en superficies texturizadas por láser con el fin de estimar la resistencia al desgaste durante el proceso de frenado.…”

Section: Superficies Biotexturizadas En El Diseño De Disipadores De C...unclassified

Análisis y diseño de sistemas térmicos. Aplicaciones en disipadores de calor y gasificadores de biomasa

Villalba¹,

Delgado-Mejía²,

Montoya³

et al. 2023

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En este libro, podrás encontrar metodologías para el diseño y análisis de sistemas térmicos, especialmente para gasificadores y disipadores de calor. Metodologías que van de la mano de herramientas computacionales y de nuevas estrategias que permiten optimizar estos sistemas. En los primeros dos capítulos se presentan dos métodos para mejorar el desempeño térmico de disipadores de calor; jugando con la modificación del área superficial, en los que, además, se realiza un análisis térmico, mediante software de fuente abierta y comercial con el objetivo de mostrar las bondades de cada uno. En el tercer capítulo se plantea un estudio detallado para el diseño y análisis de gasificadores de cascarilla de arroz de lecho fijo, en el que se definen algunas consideraciones derivadas de la experiencia acumulada por el equipo de investigadores de la Institución Universitaria Pascual Bravo, donde se dan a conocer aquellos parámetros característicos del proceso.

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“…While increasing the load‐carrying capacity, the bumps at the pressure‐falling section also increase the friction force. According to Arif et al 35 findings, the combination of micro‐texture, slip boundary condition, and a sensible choice of lubricant rheology helps to increase the stability of the hydrodynamic lubrication film in journal bearings. Some studies by Elsharkawy and Guedour, 36 Sharma et al, 37 Rajput et al, 38 and Haque and Guha 39 revealed various geometrical imperfections, non‐circularity of the bearing, the various shapes of the journal like the barrel, undulated circumferential shape, and bellmouth, convex, concave bearing, and 2–4 lobe bearing with wear and misalignment affecting the bearing's performance.…”

Section: Introductionmentioning

confidence: 99%

Impact of partial surface waviness on the tribological performance of hydrodynamic journal bearing

Bangotra

Sharma

2022

Lubrication Science

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In this paper, the static performance analysis of journal bearing having full and partial surface waviness has been presented. The surface waviness is to be considered in the full, first half, second half, and pressure-increasing and decreasing regions of the bearing for analysis. The effect of surface waviness is considered by modifying the lubricant flow governing Reynolds equation with the film thickness equation and it is solved with the finite element method to get performance parameters like bearing load capacity, friction coefficient, and so forth operating under eccentricity ratios range of 0.2-0.8. The waviness geometrical parameters like waviness numbers and amplitudes are also considered in circumferential, axial, and both directions in the selected regions. The maximum performance has been found for waviness in the full and pressureincreasing region in the circumferential direction at a high eccentricity ratio.

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Analysis of textured journal bearing with slip boundary condition and pseudoplastic lubricants

Cited by 22 publications

References 67 publications

Effect of sliding speed on the thermohydrodynamic performance of partially slip‐textured slider bearings

Effect of sliding speed on the thermohydrodynamic performance of partially slip‐textured slider bearings

Análisis y diseño de sistemas térmicos. Aplicaciones en disipadores de calor y gasificadores de biomasa

Impact of partial surface waviness on the tribological performance of hydrodynamic journal bearing

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