RT Journal Article
T1 Volumetric Behavior of Some Motor and Gear-Boxes Oils at High Pressure: Compressibility Estimation at EHL Conditions
A1 García Guimarey, María Jesús
A1 Pérez Comuñas, María José
A1 López Iglesias, Enriqueta
A1 Amigo Pombo, Alfredo José
A1 Fernández Pérez, Josefa
K1 Gear-boxes oils
K1 Pressure
K1 EHL conditions
AB Characterization of elastohydrodynamic lubrication, EHL, contacts requires an appropriate EoS for the lubricant. Experimental viscosities and speeds of sound of six lubricantsfrom 278.15 to 398.15 K at 0.1 MPa together with densities up to 120 MPa are reported. Tammann-Tait and the two EoSs based on the scaling concept describe the experimental densities of the six oils with average deviations lower to 0.03%. DowsonHigginson and Zhu and Wen equations currently used in numerical simulations of the EHL regime predict theseexperimental densities with AADs lower than 0.5%. The prediction ability for volumetric properties, mainly isothermal compressibility, of these five EoSs up to 3000 MPa, which can be reached in EHL lubrication, was evaluated. An asymptotic behavior is observed when density is plotted versus pressure for Dowson-Higginson and Zhu and Wen equation, which is not a realistic behavior. The EoSs used in the correlations predict more reasonable trends with pressure
PB American Chemical Society Publications
SN 0888-5885
YR 2017
FD 2017-08-29
LK http://hdl.handle.net/10347/32136
UL http://hdl.handle.net/10347/32136
LA eng
NO María J. G. Guimarey, María J. P. Comuñas, Enriqueta R. López, Alfredo Amigo, and Josefa Fernández Industrial & Engineering Chemistry Research 2017 56 (38), 10877-10885 DOI: 10.1021/acs.iecr.7b02002
NO This work was supported by Spanish Ministry of Economy and Competitiveness and the UE FEDER programme through ENE2014-55489-C2-1-R project. Moreover, this work was funded by the Xunta de Galicia (AGRUP2015/11 and GRC ED431C 2016/001).
DS Minerva
RD 27 abr 2026