CFD analysis of nano-lubricated journal bearing considering variable viscosity and elastic deformation effects

• Autorzy: Kadhim Zainab H. , Ahmed Saba Y. , Abass Basim A.

Identyfikatory

DOI

10.29354/diag/145034

• Języki publikacji: EN

Abstrakty

EN

The main objective of the present work is to study the behavior of Nano-lubricated journal bearing considering elasticity and variable viscosity effects. A mathematical model for a journal bearing is employed using three-dimensional computational fluid dynamics. The study is implemented for a journal bearing with laminar flow and smooth surfaces lubricated with pure oil as well as lubricants containing different concentrations of Al2O3 Nano-particles. The dependence of the oil viscosity on the temperature is considered by using the modified Krieger Dougherty model. Pressure, temperature and elastic deformation in addition to the bearing load-carrying capacity of the bearing working under different eccentricity ratios (0.1-0.6) have been studied. The mathematical model is confirmed by comparing the results of the pressure and temperature distributions obtained in the current work with those obtained by Ferron et al.(1983) for a bearing lubricated with pure oil. Also, the pressure obtained for the Nano-lubricated bearing of the present work is validated with that obtained by Solighar (2015). The results are found in good agreement with a maximum deviation not exceeding 5%. The obtained results show that the oil film pressure increases by about 17.9% with a slight decrease in oil film temperature and friction coefficient.

Słowa kluczowe

EN

hydrodynamic journal bearings; computational fluid dynamics; thermohydrodynamic lubrication; nano-lubricant; elastic deformation

PL

hydrodynamika; łożyska ślizgowe; numeryczna mechanika płynów; smarowanie hydrodynamiczne; odkształcenie sprężyste

• Wydawca: Polskie Towarzystwo Diagnostyki Technicznej
• Czasopismo: Diagnostyka
• Rocznik: 2022
• Tom: Vol. 23, No. 1
• Strony: art. no. 2022101
• Opis fizyczny: Bibliogr. 26 poz., rys., tab.

Twórcy

autor

Kadhim Zainab H.

• University of Babylon, College of Engineering, Mechanical Engineering Department, Babylon, Iraq

autor

Ahmed Saba Y.

• University of Babylon, College of Engineering, Mechanical Engineering Department, Babylon, Iraq

autor

Abass Basim A.

• University of Babylon, College of Engineering, Mechanical Engineering Department, Babylon, Iraq

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).