Oil flow behavior within a lubrication system utilized in a turbofan engine has been studied using a two-dimensional model for a seal runner and a sump wall. A two-dimensional, axisymmetric boundary layer method is utilized to derive a model for the film on the seal runner. An integral method analysis of boundary layer equations are utilized to derive a model for the film behavior on the outer wall of the sump neglecting variations in the axial direction. Parametric studies for oil flow at the seal runner and one the sump wall have been generated for a wide range of oil film properties and ambient conditions.
Issue Section:
Gas Turbines: Structures and Dynamics
1.
Hansen
, E.
, and Kelmanson
, M.
, 1994, “Steady, Viscous, Free-Surface Flow on a Rotating Cylinder
,” J. Fluid Mech.
0022-1120, 272
, pp. 91
–107
.2.
Wittig
, S.
, Himmelsbach
, J.
, Noll
, B.
, Feld
, H. J.
, Samenfink
, W.
, Halupovich
, Y.
, Naton
, B.
, and Rom
, J.
, 1992, “Motion and Evaporation of Shear-Driven Liquid Films in Turbulent Gases
,” J. Eng. Gas Turbines Power
0742-4795, 114
, pp. 395
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.3.
Wittig
, S.
, and Schulz
, A.
, 1992, “A Survey on Efforts in Heat and Mass Transfer Analysis in Aero Engine Secondary Air∕Oil Systems
,” International Symposium on Heat Transfer in Turbomachinery
, Athens
, Greece.4.
Glahn
, A.
, Kurreck
, M.
, Willmann
, M.
, and Wittig
, S.
, 1995, “Feasibility Study on Oil Droplet Flow Investigations Inside Aero Engine Bearing Chambers-PDPA Techniques in Combination with Numerical Approaches
,” ASME paper No. 95-GT-100.5.
Chew
, J. W.
, 1996, “Analysis of the Oil Film on the Inside Surface of an Aero-Engine Chamber Housing
,” ASME paper No. 96-GT-300.6.
Jonson
, R. E.
, 1988, “Steady-State Coating Flows Inside a Rotating Horizontal Cylinder
,” J. Fluid Mech.
0022-1120, 190
, pp. 321
–342
.7.
Stanton
, D. W.
, and Rutland
, C. J.
, 1998, “Multi-Dimensional Modeling of Thin Liquid Films and Spray-Wall Interactions Resulting From Impinging Sprays
,” Int. J. Heat Mass Transfer
0017-9310, 41
, pp. 3037
–3054
.8.
Farrall
, M. B.
, Hibberd
, S.
, and Simmons
, K.
, 2000, “Computational Modeling of Two-Phase Air∕Oil Flow Within an Aero-Engine Bearing Chamber
,” FEDSM 2000-11081, in Proceedings of ASME 2000 Fluids Engineering Division Summer Meeting
, Boston
, Massachusetts.9.
Shimo
, M.
, 2001, “Modeling of Film Behavior on a Seal Runner and a Sump Wall
,” Master thesis, Purdue University, West Lafayette.10.
Weinstock
, V. D.
, 2001, “Modeling of Drop Trajectories and Drop∕Wall Interactions in Gas Turbine Engine Sumps
,” Master thesis, Purdue University, West Lafayette.11.
Canino
, J.
, 2002, “Characterization of the Turbulent Windage in an Annulus and its Incorporation into Two Sump Design Codes
,” Master thesis, Purdue University, West Lafayette.12.
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