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RISDiscussion of “Non-Axisymmetric Flows and Rotordynamic Forces in an Eccentric Shrouded Centrifugal Compressor—Part 1: Measurement” (Song, J., Kim, S., Park, T. C., Cha, B.-J., Lim, D. H., Hong, J. S., Lee, T. W., and Song, S. J., ASME J. Eng. Gas Turbines
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: My commendations to the authors for this long-awaited (and greatly needed) contribution regarding measured direct and cross-coupled stiffness (Kxy) coefficients of a centrifugal–compressor impeller. As noted by the authors, ...
Discussion of “Non-Axisymmetric Flows and Rotordynamic Forces in an Eccentric Shrouded Centrifugal Compressor—Part 2: Analysis” (Song, J., and Song S. J., ASME J. Eng. Gas Turbines Power, 141(11), p. 111015)
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: By comparisons to measurements, the bulk-flow model for flow in the impeller annulus appears to work well. Baskharone and Hensel [1] presented CFD predictions for flow in the leakage annulus of a pump impeller based on a ...
Two Jeffcott-Based Modal Simulation Models for Flexible Rotating Equipment
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Two transient modal simulation models are presented based on the Jeffcott-Green flexible-rotor formulation. One of the models is based on the conventional “non-spinning” formulation, while the ...
Discussion: “Advancements in the Performance of Aerodynamic Foil Journal Bearings: High Speed and Load Capability” (Heshmat, H., 1994, ASME J. Tribol., 116, pp. 287–294)
Publisher: The American Society of Mechanical Engineers (ASME)
Behaviors of a Hole-Pattern Seal With Wet-Gas
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Hole-pattern (HP) seals are widely used in centrifugal compressors to control leakage. This paper investigates the behaviors of an HP with wet-gas mixtures. The mixture consists of oil and air with inlet liquid volume ...
Effects of Increased Tooth Clearance on the Performance of a Labyrinth Seal With Oil-Rich Bubbly Laminar Flow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In recent years, multiphase pumps have become more and more popular because of the capability to simplify the process, reduce the footprint, and lower the cost. To compensate for the axial thrust force, an annular seal is ...
A Study for Rotordynamic and Leakage Characteristics of a Long-Honeycomb Seal With Two-Phase, Mainly Air Mixtures
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper investigates the impact of the oil (silicone oil PSF-5cSt) presence in the air on the leakage and rotordynamic characteristics of a long-honeycomb seal with length-to-diameter ratio L/D = 0.748 and diameter ...
Experimental Study on the Performance of a See-Through Labyrinth Seal With Two-Phase, Mainly-Liquid Mixtures
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: With the increasing demand of the oil and gas industry, many pump companies are developing multiphase pumps, which can handle liquid–gas flow directly without separating the liquid from a mixed flow. The see-through labyrinth ...
Prediction of Dry-Friction Whirl and Whip Between a Rotor and a Stator
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper addresses recent test results for dry-friction whip and whirl. Authors of these publications suggest that predictions from Black’s 1968 paper (J. Mech. Eng. Sci., 10(1), pp. 1–12) ...
Static and Rotordynamic Characteristics for a New Hole Pattern Annular Gas Seal Design Incorporating Larger Diameter Holes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: To reduce manufacturing cost and time, a new largerdiameter holepattern seal incorporating hole diameters of 12.27 mm, versus prior hole diameters of 3.175 mm has been proposed. The 12.27 mm holediameter seal had ...