The Effect of the Fluid Film Variable Viscosity on the Hydrostatic Thrust Spherical Bearing Performance in the Presence of Centripetal Inertia and Surface Roughness Part 2, Recessed Fitted Bearing

Ahmad Waguih Yacout Elescandarany

doi:doi:10.11648/j.ijmea.20180603.15

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The Effect of the Fluid Film Variable Viscosity on the Hydrostatic Thrust Spherical Bearing Performance in the Presence of Centripetal Inertia and Surface Roughness Part 2, Recessed Fitted Bearing

Ahmad Waguih Yacout Elescandarany

Published in International Journal of Mechanical Engineering and Applications (Volume 6, Issue 3)

Received: 12 July 2018 Accepted: 14 August 2018 Published: 11 September 2018

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Abstract

The study deals with the fluid viscosity variation, the centripetal inertia and the bearing surface roughness affecting the externally pressurized thrust spherical bearing performance where the partial differential equation of the temperature gradient previously derived from the fluid governing equations, is integrated and applied to this type of bearings to calculate and predict temperature distribution along the fluid film. In this part of the research, the recessed fitted type of bearings has been studied deriving mathematical expressions that not only cover this configuration but also cover the fitted type of this bearing with its different configurations and showing also the recess effect on the bearing performance. The results showed the effect of the viscosity variation on the pressure, the load caring capacity, the fluid flow rate, the frictional torque, the friction factor, the power factor, the stiffness factor and the central pressure ratio as well as the effect of the speed parameter and the eccentricity on the temperature rise. Applying these derived mathematical expressions, which could be considered as a general solution for the fitted type, an optimum design for the fitted type with its different configurations (with and without recess; hemispherical and partial hemispherical seats) has been performed. Using the same bearing dimensions, the application of these equations proved the excellence of the aforementioned optimum design of this bearing in our previous papers where the temperature of the outlet flow was less than 14 degrees centigrade over its inlet temperature.

Published in	International Journal of Mechanical Engineering and Applications (Volume 6, Issue 3)
DOI	10.11648/j.ijmea.20180603.15
Page(s)	73-90
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2018. Published by Science Publishing Group

Keywords

Hydrostatic Bearings, Spherical Bearings, Surface Roughness, Inertia Effect, Viscosity Effect

References

[1]	Dowson D. and Taylor M. 1967, “Fluid inertia effect in spherical hydrostatic thrust bearings”, ASLE Trans. 10, 316- 324.
[2]	Dowson D. and Taylor M. 1967, “A Re- Examination of hydrosphere performance”, ASLE Trans. 10, 325- 333.
[3]	Ahmad W. Yacout, Ashraf S. Ismaeel, Sadek Z. Kassab, 2007, “The combined effects of the centripetal inertia and the surface roughness on the hydrostatic thrust spherical bearing performance”, Tribolgy International Journal Vol.40, No. 3, 522-532.
[4]	Ahmad W. Y. Elescandarany, 2018, “The Effect of the Fluid Film Variable Viscosity on the HydrostaticThrust Spherical Bearing Performance in the Presence of Centripetal Inertia and Surface Roughness (Part 1 Un-recessed fitted bearing)”, The International Journal of Mechanical Engineering and ApplicationsVol.6, No. 1, pp. 1-12.
[5]	Essam Salem and Farid Khalil, Variable viscosity effects in Externally Pressurized spherical Oil Bearings, Journal of Wear 1978, 50, 221-235.
[6]	Keith Brockwell, Scan Decamillo and WaldemarDmochowski, 2001, “Measured temperature characteristics of 152 mm diameter pivoted shoe journal bearings with flooded lubrication”, Tribology Transaction vol. 44, No. 4, 543-550.
[7]	B Glavatskih and S De Camillo, 2004, “Influence of oil viscosity grade on thrust pad bearing operation”, Proc. Inst. Mech. Eng. Vol.218, part j: J. Engineering tribology.
[8]	Minhui He, Cloud C. Hunter and James M.Byrne,2005, “Fundamentals of Fluid Film”, Journal Bearing Operation and Modeling, Proceedings of the thirty fourth Turbo-machinery Symposium.
[9]	Ivan Filipović and DževadBibić, 2010, “Impact of oil viscosity on functional parameters of journal bearings in internal combustion engines”, Gorivaimaziva, 49, 4, 334 - 351
[10]	Srinivasan V. 2012, “Analysis of Static and Dynamic Load on the Hydrostatic Bearing with Variable Viscosity Affected by the Environmental Temperature”, Journal of Environmental Research and Development Vol.7, No. 1A, 346-353.
[11]	Srinivasan V. 2013, “Analysis of Static and Dynamic Load on Hydrostatic Bearing with Variable Viscosity and Pressure”, Journal of Environmental Research and Development Vol.6 (6s), 4777-4782.
[12]	N.B. Naduvinamani and Archana K. Kadadi, 2013, “The effect of viscosity variation on the micro-polar fluid squeeze film lubrication of a short journal bearing”, Advances of Tribology Journal, Vol.2013, Article ID 743987.
[13]	Shigang Wang, Xianfeng Du, Mingzhu Li, Zhongliang Cao, Jianjia Wang, 2013,“Analysis of temperature effect on the lubricating state of hydrostatic bearing”, Journal of Theoretical and Applied Information Technology Vol. 48, No. 2, 817-821.
[14]	B. Bouchehit, B. Bou-Saïd and M Garcia, 2016, “Static and dynamic performances of refrigerant- lubricated foil bearings”, 7^th international conference on advanced concepts in mechanical engineering.
[15]	Cameron A. 1981, Basic lubrication theory, Longman.

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APA Style

Ahmad Waguih Yacout Elescandarany. (2018). The Effect of the Fluid Film Variable Viscosity on the Hydrostatic Thrust Spherical Bearing Performance in the Presence of Centripetal Inertia and Surface Roughness Part 2, Recessed Fitted Bearing. International Journal of Mechanical Engineering and Applications, 6(3), 73-90. https://doi.org/10.11648/j.ijmea.20180603.15

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ACS Style

Ahmad Waguih Yacout Elescandarany. The Effect of the Fluid Film Variable Viscosity on the Hydrostatic Thrust Spherical Bearing Performance in the Presence of Centripetal Inertia and Surface Roughness Part 2, Recessed Fitted Bearing. Int. J. Mech. Eng. Appl. 2018, 6(3), 73-90. doi: 10.11648/j.ijmea.20180603.15

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AMA Style

Ahmad Waguih Yacout Elescandarany. The Effect of the Fluid Film Variable Viscosity on the Hydrostatic Thrust Spherical Bearing Performance in the Presence of Centripetal Inertia and Surface Roughness Part 2, Recessed Fitted Bearing. Int J Mech Eng Appl. 2018;6(3):73-90. doi: 10.11648/j.ijmea.20180603.15

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@article{10.11648/j.ijmea.20180603.15,
  author = {Ahmad Waguih Yacout Elescandarany},
  title = {The Effect of the Fluid Film Variable Viscosity on the Hydrostatic Thrust Spherical Bearing Performance in the Presence of Centripetal Inertia and Surface Roughness Part 2, Recessed Fitted Bearing},
  journal = {International Journal of Mechanical Engineering and Applications},
  volume = {6},
  number = {3},
  pages = {73-90},
  doi = {10.11648/j.ijmea.20180603.15},
  url = {https://doi.org/10.11648/j.ijmea.20180603.15},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmea.20180603.15},
  abstract = {The study deals with the fluid viscosity variation, the centripetal inertia and the bearing surface roughness affecting the externally pressurized thrust spherical bearing performance where the partial differential equation of the temperature gradient previously derived from the fluid governing equations, is integrated and applied to this type of bearings to calculate and predict temperature distribution along the fluid film. In this part of the research, the recessed fitted type of bearings has been studied deriving mathematical expressions that not only cover this configuration but also cover the fitted type of this bearing with its different configurations and showing also the recess effect on the bearing performance. The results showed the effect of the viscosity variation on the pressure, the load caring capacity, the fluid flow rate, the frictional torque, the friction factor, the power factor, the stiffness factor and the central pressure ratio as well as the effect of the speed parameter and the eccentricity on the temperature rise. Applying these derived mathematical expressions, which could be considered as a general solution for the fitted type, an optimum design for the fitted type with its different configurations (with and without recess; hemispherical and partial hemispherical seats) has been performed. Using the same bearing dimensions, the application of these equations proved the excellence of the aforementioned optimum design of this bearing in our previous papers where the temperature of the outlet flow was less than 14 degrees centigrade over its inlet temperature.},
 year = {2018}
}

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TY  - JOUR
T1  - The Effect of the Fluid Film Variable Viscosity on the Hydrostatic Thrust Spherical Bearing Performance in the Presence of Centripetal Inertia and Surface Roughness Part 2, Recessed Fitted Bearing
AU  - Ahmad Waguih Yacout Elescandarany
Y1  - 2018/09/11
PY  - 2018
N1  - https://doi.org/10.11648/j.ijmea.20180603.15
DO  - 10.11648/j.ijmea.20180603.15
T2  - International Journal of Mechanical Engineering and Applications
JF  - International Journal of Mechanical Engineering and Applications
JO  - International Journal of Mechanical Engineering and Applications
SP  - 73
EP  - 90
PB  - Science Publishing Group
SN  - 2330-0248
UR  - https://doi.org/10.11648/j.ijmea.20180603.15
AB  - The study deals with the fluid viscosity variation, the centripetal inertia and the bearing surface roughness affecting the externally pressurized thrust spherical bearing performance where the partial differential equation of the temperature gradient previously derived from the fluid governing equations, is integrated and applied to this type of bearings to calculate and predict temperature distribution along the fluid film. In this part of the research, the recessed fitted type of bearings has been studied deriving mathematical expressions that not only cover this configuration but also cover the fitted type of this bearing with its different configurations and showing also the recess effect on the bearing performance. The results showed the effect of the viscosity variation on the pressure, the load caring capacity, the fluid flow rate, the frictional torque, the friction factor, the power factor, the stiffness factor and the central pressure ratio as well as the effect of the speed parameter and the eccentricity on the temperature rise. Applying these derived mathematical expressions, which could be considered as a general solution for the fitted type, an optimum design for the fitted type with its different configurations (with and without recess; hemispherical and partial hemispherical seats) has been performed. Using the same bearing dimensions, the application of these equations proved the excellence of the aforementioned optimum design of this bearing in our previous papers where the temperature of the outlet flow was less than 14 degrees centigrade over its inlet temperature.
VL  - 6
IS  - 3
ER  -

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Author Information

Ahmad Waguih Yacout Elescandarany

Mechanical Department, Faculty of Engineering, Alexandria University, Alex, Egypt

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APA Style

Ahmad Waguih Yacout Elescandarany. (2018). The Effect of the Fluid Film Variable Viscosity on the Hydrostatic Thrust Spherical Bearing Performance in the Presence of Centripetal Inertia and Surface Roughness Part 2, Recessed Fitted Bearing. International Journal of Mechanical Engineering and Applications, 6(3), 73-90. https://doi.org/10.11648/j.ijmea.20180603.15

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ACS Style

Ahmad Waguih Yacout Elescandarany. The Effect of the Fluid Film Variable Viscosity on the Hydrostatic Thrust Spherical Bearing Performance in the Presence of Centripetal Inertia and Surface Roughness Part 2, Recessed Fitted Bearing. Int. J. Mech. Eng. Appl. 2018, 6(3), 73-90. doi: 10.11648/j.ijmea.20180603.15

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AMA Style

Ahmad Waguih Yacout Elescandarany. The Effect of the Fluid Film Variable Viscosity on the Hydrostatic Thrust Spherical Bearing Performance in the Presence of Centripetal Inertia and Surface Roughness Part 2, Recessed Fitted Bearing. Int J Mech Eng Appl. 2018;6(3):73-90. doi: 10.11648/j.ijmea.20180603.15

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@article{10.11648/j.ijmea.20180603.15,
  author = {Ahmad Waguih Yacout Elescandarany},
  title = {The Effect of the Fluid Film Variable Viscosity on the Hydrostatic Thrust Spherical Bearing Performance in the Presence of Centripetal Inertia and Surface Roughness Part 2, Recessed Fitted Bearing},
  journal = {International Journal of Mechanical Engineering and Applications},
  volume = {6},
  number = {3},
  pages = {73-90},
  doi = {10.11648/j.ijmea.20180603.15},
  url = {https://doi.org/10.11648/j.ijmea.20180603.15},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmea.20180603.15},
  abstract = {The study deals with the fluid viscosity variation, the centripetal inertia and the bearing surface roughness affecting the externally pressurized thrust spherical bearing performance where the partial differential equation of the temperature gradient previously derived from the fluid governing equations, is integrated and applied to this type of bearings to calculate and predict temperature distribution along the fluid film. In this part of the research, the recessed fitted type of bearings has been studied deriving mathematical expressions that not only cover this configuration but also cover the fitted type of this bearing with its different configurations and showing also the recess effect on the bearing performance. The results showed the effect of the viscosity variation on the pressure, the load caring capacity, the fluid flow rate, the frictional torque, the friction factor, the power factor, the stiffness factor and the central pressure ratio as well as the effect of the speed parameter and the eccentricity on the temperature rise. Applying these derived mathematical expressions, which could be considered as a general solution for the fitted type, an optimum design for the fitted type with its different configurations (with and without recess; hemispherical and partial hemispherical seats) has been performed. Using the same bearing dimensions, the application of these equations proved the excellence of the aforementioned optimum design of this bearing in our previous papers where the temperature of the outlet flow was less than 14 degrees centigrade over its inlet temperature.},
 year = {2018}
}

Copy | Download

TY  - JOUR
T1  - The Effect of the Fluid Film Variable Viscosity on the Hydrostatic Thrust Spherical Bearing Performance in the Presence of Centripetal Inertia and Surface Roughness Part 2, Recessed Fitted Bearing
AU  - Ahmad Waguih Yacout Elescandarany
Y1  - 2018/09/11
PY  - 2018
N1  - https://doi.org/10.11648/j.ijmea.20180603.15
DO  - 10.11648/j.ijmea.20180603.15
T2  - International Journal of Mechanical Engineering and Applications
JF  - International Journal of Mechanical Engineering and Applications
JO  - International Journal of Mechanical Engineering and Applications
SP  - 73
EP  - 90
PB  - Science Publishing Group
SN  - 2330-0248
UR  - https://doi.org/10.11648/j.ijmea.20180603.15
AB  - The study deals with the fluid viscosity variation, the centripetal inertia and the bearing surface roughness affecting the externally pressurized thrust spherical bearing performance where the partial differential equation of the temperature gradient previously derived from the fluid governing equations, is integrated and applied to this type of bearings to calculate and predict temperature distribution along the fluid film. In this part of the research, the recessed fitted type of bearings has been studied deriving mathematical expressions that not only cover this configuration but also cover the fitted type of this bearing with its different configurations and showing also the recess effect on the bearing performance. The results showed the effect of the viscosity variation on the pressure, the load caring capacity, the fluid flow rate, the frictional torque, the friction factor, the power factor, the stiffness factor and the central pressure ratio as well as the effect of the speed parameter and the eccentricity on the temperature rise. Applying these derived mathematical expressions, which could be considered as a general solution for the fitted type, an optimum design for the fitted type with its different configurations (with and without recess; hemispherical and partial hemispherical seats) has been performed. Using the same bearing dimensions, the application of these equations proved the excellence of the aforementioned optimum design of this bearing in our previous papers where the temperature of the outlet flow was less than 14 degrees centigrade over its inlet temperature.
VL  - 6
IS  - 3
ER  -

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