TECHNICAL PAPERS: Gas Turbines: Heat Transfer and Turbomachinery

Disintegration of Oil Films Emerging From Radial Holes in a Rotating Cylinder

[+] Author and Article Information
A. Glahn, M. F. Blair

United Technologies Research Center, 411 Silver Lane, M/S 129-19, East Hartford, CT 06108

K. L. Allard

Pratt & Whitney, 400 Main Street, East Hartford, CT 06108

S. Busam, O. Schäfer, S. Wittig

Institut für Thermische Strömungsmaschinen, Universität Karlsruhe, Kaiserstr. 12, Karlsruhe 76128, Germany

J. Eng. Gas Turbines Power 125(4), 1011-1020 (Nov 18, 2003) (10 pages) doi:10.1115/1.1586311 History: Received December 01, 2000; Revised March 01, 2001; Online November 18, 2003
Copyright © 2003 by ASME
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Rotating cylinder test rig
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Test matrix for droplet size and velocity measurement. (a) Configuration 1A: DH=3⋅10−3 m,(L/D)H=1.67. (b) Configuration 1B: DH=9⋅10−3 m,(L/D)H=0.56. (c) Nomenclature.
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Oil atomization at a rotating radial hole (DH=9⋅10−3 m); (a) sheet separation, (b) droplet trajectory
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N=3450 rpm,q=1.39⋅10−5 m3/s,L/DH=1.67,ΔR/DC=0.077. Axial profiles of (a) mean diameters, (b) cumulative diameters, (c) mean velocities and velocity range.
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N=3450 rpm,q=1.39⋅10−5 m3/s,L/DH=1.67,Z/DC=0.0. Radial profiles of (a) mean diameters, (b) cumulative diameters, (c) Mean velocities and velocity range.
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N=3450 rpm, L/DH=1.67,Z/DC=0.0. Effect of flow rate on (a) droplet velocities based on rim speed, (b) flow angles.
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q=5.44⋅10−5 m3/s,L/DH=0.56,Z/DC=0.0. Effect of rotational speed on (a) absolute droplet velocities, (b) droplet velocities based on rim speed, (c) flow angles
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Deceleration of droplets at various rotational speeds
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Arithmetic mean droplet diameter versus nondimensional volumetric flow rate
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Mean diameter based on oil film thickness at the rim of the hole/disk
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Standard deviation of droplet diameter distribution
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Droplet velocity after completed disintegration
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Droplet flow angle after completed disintegration




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