CFD analysis of the impact of a cone opening angle parameter on the hydrodynamic lubrication of the conical slide bearing

• Autorzy: Czaban A.

Identyfikatory

DOI

10.5604/12314005.1216435

• Języki publikacji: EN

Abstrakty

EN

The height of the oil lubrication gap is the primary quantity that determines in simulations the operating parameters of a hydrodynamic slide bearing. It is influenced by multiple effects, such as vibrations during operation, varying load, misalignment between the shaft axis and the axis of the bearing sleeve, the roughness of the journal and sleeve surfaces, change in the viscosity value of lubricating oil caused by changes in temperature, pressure, shear rate or by oil ageing, wear of journal and sleeve surfaces etc. It is important to take into account such effects considering hydrodynamic lubrication simulations and design of the slide bearings. The one of the factors influencing the height of the oil lubrication gap of the conical slide bearing is the difference between the opening angle of the cone of bearing shaft and opening angle of the cone of bearing sleeve. The aim of this work is to investigate the impact of the difference between the values of these angles on the hydrodynamic lubrication of the conical slide bearing. The commercial CFD software Ansys Fluent, from the Ansys Workbench 2 platform, was used to determine the hydrodynamic pressure distributions, load carrying capacities and friction torques of the simulated bearings. It was assumed, that the bearings operate in a steady state conditions, the flow in the bearing lubrication gap is laminar and non-isothermal, there is no misalignment between the axis of bearing journal and axis of bearing sleeve, the surfaces of the journal and sleeve are smooth and lubricating oil acts as a liquid described by the Ostwald-de Waele power law model.

Słowa kluczowe

EN

hydrodynamic lubrication; slide bearing; conical bearing; cone opening angle; CFD; pressure distribution

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2016
• Tom: Vol. 23, No. 3
• Strony: 71--77
• Opis fizyczny: Bibliogr. 9 poz., rys.

Twórcy

autor

Czaban A.

• Gdynia Maritime University, Faculty of Marine Engineering Morska Street 81-87, 81-225 Gdynia, Poland tel.:[phone], fax: [phone]

Bibliografia

• [1] Czaban, A., CFD Analysis of Non-Newtonian and Non-Isothermal Lubrication of Hydrodynamic Conical Bearing, Journal of KONES, Vol. 21, No. 3, pp. 49-56, 2014.
• [2] Frycz, M., Effect of Concentration of Magnetic Particles on Ferroiil’s Dynamic Viscosity as a Function of Temperature and Shear Rate, Journal of KONES, Vol. 19, No. 2, pp. 159-165, Warsaw 2012.
• [3] Frycz, M., Czaban, A., Influence of Pressure on Ferro-Oil Dynamic Viscosity, Zeszyty Naukowe Akademii Morskiej w Gdyni, No. 83, pp. 45-52, 2014.
• [4] Li, Q., Liu, S., Pan, X., Zheng, S., A new method for studying the 3D transient flow of misaligned journal bearings in flexible rotor-bearing systems, Journal of Zhejiang University-Science A (Applied Physics & Engineering), 13(4), pp. 293-310, 2012.
• [5] Miszczak, A., Analiza hydrodynamicznego smarowania ferrocieczą poprzecznych łożysk ślizgowych, Fundacja Rozwoju Akademii Morskiej, Gdynia 2006.
• [6] Nowak, Z., Wierzcholski, K., Flow of a Non-Newtonian Power Law Lubricant trough the Conical Bearing gap, Acta Mechanica 50, pp. 221-230, 1984.
• [7] Nowak, Z., Wierzcholski, K., Effect of a temperature dependent lubricant consistency on the capacity of a conical journal bearing, Proc. IX Intl. Congress on Rheology, pp. 583-589, Acapulco 1984.
• [8] Sikora, G., The Influence of Oil Aging on the Change of Viscosity and Lubricity of Engine Oil, Solid State Phenomena, Vol. 199, pp. 182-187, 2013
• [9] Wierzcholski, K., Flow of pseudo-plastic non-Newtonian lubricant through the slide bearing curvilinear gap, International Congress on Tribology Eurotrib 85, Conference Proceedings, pp. 1-5, Lyon 1985.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.