Pressure and capacity force in slide journal plane bearing lubricated oil with micropolar structure

• Autorzy: Krasowski P.
• Języki publikacji: EN

Abstrakty

EN

Present paper shows the results of numerical solution Reynolds equation for laminar, steady oil flow in slide plane bearing gap. Lubrication oil is fluid with micropolar structure. Properties of oil lubrication as of liquid with micropolar structure in comparison with Newtonian liquid, characterized are in respect of dynamic viscosity additionally dynamic couple viscosity and three dynamic rotation viscosity. Under regard of build structural element of liquid characterized is additionally microinertia coefficient. In modelling properties and structures of micropolar liquid one introduced dimensionless parameter with in terminal chance conversion micropolar liquid to Newtonian liquid. The results shown on diagrams of hydrodynamic pressure in dimensionless form in dependence on coupling number N and characteristic dimensionless length of micropolar fluid A1. Presented calculations are limited to isothermal models of bearing with inflnite breadth. Especially, geometry schema of the slide Journal plane bearing gap, the dimensionless pressure distributions p1 in dependence on coupling number N2, the dimensionless pressure distributions p1 in dependence on characteristic dimensionless length of micropolar fluid, the dimensionless maximal pressure p1m in dependence on coupling number N, gap convergence coefficient are presented in the paper.

Słowa kluczowe

EN

micropolar lubrication; journal plane bearing; hydrodynamic pressure

• 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: 2009
• Tom: Vol. 16, No. 2
• Strony: 247--253
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Krasowski P.

• Gdynia Maritime University, Faculty Marinę Engineering Morska Street 81-87,81-225 Gdynia, Poland phone:[phone], fax:[phone],

Bibliografia

• [1] Das, S., Guha, S. K., Chattopadhyay, A. K., Linear stability analysis of hydrodynamic journal bear ings under micropolar lubrication, Tribology International 38, pp. 500-507, 2005.
• [2] Krasowski, P., Stacjonarny, laminarny przepływ mikropolarnego czynnika smarujacego w szczelinie smarnej poprzecznego łożyska ślizgowego, Zeszyty Naukowe Nr 49, pp. 72-90, Akademia Morska, Gdynia 2003.
• [3] Łukaszewicz, G., Micropolar Fluids. Theory and Aplications – Birkhäuser, Boston 1999.
• [4] Walicka, A., Reodynamika pzepływu płynów nienewtonowskich w kanałach prostych i zakrzywionych, Uniwersytet Zielonogórski, Zielona Góra 2002.
• [5] Walicka, A., Inertia effects in the flow of a micropolar fluid in a slot between rotating sufrages of revolution, International Journal of Mechanics and Engineering, Vol. 6, No. 3, pp. 731-790, 2001.
• [6] Wierzcholski, K., Mathematical methods in hydrodynamic theory of lubrication, Technical University Press, Szczecin 1993.
• [7] Xiao-Li Wang, Ke-Qin Zhu, A study of the lubricating effectiveness of micropolar fluids in a dynamically loaded journal bearing, Tribology International 37, pp. 481-490, 2004.