Modelling of Lubricating Grease FlowUsing Computational Fluid Dynamics

• In this paper, numerical simulations of lubricating grease flow usingComputational Fluid Dynamics is presented. The grease is treated as asingle-phase Herschel-Bulkley fluid, where three different rheologicalproperties, corresponding to NLGI grade 00, 1 and 2, respectively, havebeen considered in two different configurations comprised by arestricted straight channel, and a double restriction seal with andwithout ring. The numerical code and rheology model have beenvalidated with analytical solutions and flow measurements using microparticleimage velocimetry. The grease velocity distribution in thegeometries are obtained and the motion of contaminant particlesinserted into the flow is investigated. The latter is of special interest inseal geometries which intend to protect the moving mechanicalcomponents from contamination.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Strömningsmekanik och akustik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering -- Fluid Mechanics and Acoustics (hsv//eng)

Nyckelord

Strömningslära

Fluid Mechanics

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