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Proceedings Papers

Experimental and Theoretical Comparison of Two Swirl Brake Designs

K. K. Nielsen, D. W. Childs, C. M. Myllerup

Proc. ASME. GT2000, Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education, V004T03A041, May 8–11, 2000

Paper No: 2000-GT-0399

DOI: https://doi.org/10.1115/2000-GT-0399

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Topics: Brakes, Computational fluid dynamics, Design, Engines, Fuels, High pressure (Physics), Modeling, Separation (Technology), Space vehicles, Vortices

Proceedings Papers

Experimental Rotordynamic Coefficient Results for a Load-on-Pad Flexible-Pivot Tilting-Pad Bearing With Comparisons to Predictions From Bulk-Flow and Reynolds Equation Models

L. E. Rodriguez, D. W. Childs

Proc. ASME. TRIB2004, ASME/STLE 2004 International Joint Tribology Conference, Parts A and B, 529-537, October 24–27, 2004

Paper No: TRIB2004-64042

DOI: https://doi.org/10.1115/TRIB2004-64042

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Topics: Bearings, Flow (Dynamics), Stress, Stiffness, Excitation, Inertia (Mechanics), Fluids, Degrees of freedom, Dynamics (Mechanics), Eigenvalues

Proceedings Papers

Understanding Friction Factor Behavior in Liquid Annular Seals With Deliberately Roughened Surfaces: Roughness Geometric Characteristics Defining Flow Resistance

L. A. Villasmil, D. W. Childs, H. C. Chen

Proc. ASME. GT2006, Volume 3: Heat Transfer, Parts A and B, 1571-1579, May 8–11, 2006

Paper No: GT2006-91046

DOI: https://doi.org/10.1115/GT2006-91046

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Topics: Flow (Dynamics), Friction, Surface roughness, Leakage, Clearances (Engineering), Honeycomb structures, Machinery, Centrifugal pumps, Compressors, Design

Journal Articles

Measurements Versus Predictions for the Dynamic Impedance of Annular Gas Seals—Part II: Smooth and Honeycomb Geometries

M. P. Dawson, Senior Engineer, D. W. Childs, Jordan Professor of Mechanical Engineering

J. Eng. Gas Turbines Power. October 2002, 124(4): 963–970.

DOI: https://doi.org/10.1115/1.1478076

Published Online: September 24, 2002

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Topics: Honeycomb structures, Pressure

Journal Articles

Measurements Versus Predictions for the Dynamic Impedance of Annular Gas Seals—Part I: Test Facility and Apparatus

M. P. Dawson, Senior Engineer, D. W. Childs, Jordan Professor of Mechanical Engineering, C. G. Holt, Research Assistant, S. G. Phillips, Research Engineer

J. Eng. Gas Turbines Power. October 2002, 124(4): 958–962.

DOI: https://doi.org/10.1115/1.1478075

Published Online: September 24, 2002

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Topics: Pressure, Stators, Test facilities, Excitation, Rotors, Annulus

Journal Articles

Measurements of Rotordynamic Coefficients of Hybrid Bearings With (a) a Plugged Orifice, and (b) a Worn Land Surface

F. Laurant, D. W. Childs

J. Eng. Gas Turbines Power. April 2002, 124(2): 363–368.

DOI: https://doi.org/10.1115/1.1403461

Published Online: March 26, 2002

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Topics: Bearings, Stiffness, Pressure, Damping, Wear

Journal Articles

Experimental and Theoretical Comparison of Two Swirl Brake Designs

K. K. Nielsen, D. W. Childs, C. M. Myllerup

J. Turbomach. April 2001, 123(2): 353–358.

DOI: https://doi.org/10.1115/1.1354140

Published Online: February 1, 2000

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Topics: Brakes, Flow (Dynamics), Rotors, Design

Journal Articles

Experimental Rotordynamic Coefficient Results for (a) a Labyrinth Seal With and Without Shunt Injection and (b) a Honeycomb Seal

E. A. Soto, D. W. Childs

J. Eng. Gas Turbines Power. January 1999, 121(1): 153–159.

DOI: https://doi.org/10.1115/1.2816303

Published Online: January 1, 1999

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Topics: Honeycomb structures, Rotation, Pressure, Compressors, Damping, Leakage, Rotors, Diffusers, Flow control, Fluid density

Journal Articles

A Comparison of Experimental Rotordynamic Coefficients and Leakage Characteristics Between Hole-Pattern Gas Damper Seals and a Honeycomb Seal

Z. Yu, D. W. Childs

J. Eng. Gas Turbines Power. October 1998, 120(4): 778–783.

DOI: https://doi.org/10.1115/1.2818467

Published Online: October 1, 1998

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Topics: Dampers, Honeycomb structures, Leakage, Damage, Damping, Design, Drilling, Manufacturing, Plastics, Pressure

Journal Articles

Theory Versus Experiment for the Effects of Pressure Ratio on the Performance of an Orifice-Compensated Hybrid Bearing

P. Mosher, D. W. Childs

J. Vib. Acoust. October 1998, 120(4): 930–936.

DOI: https://doi.org/10.1115/1.2893922

Published Online: October 1, 1998

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Topics: Bearings, Pressure, Stress, Flow (Dynamics), High pressure (Physics), Hydrostatics, Navier-Stokes equations, Stiffness, Torque, Whirls

Journal Articles

Closure to “Discussion of ‘The Acoustic Influence of Cell Depth on the Rotordynamic Characteristics of Smooth-Rotor/Honeycomb-Stator Annular Gas Seals’” (1997, ASME J. Eng. Gas Turbines Power, 119, p. 956)

G. F. Kleynhans, D. W. Childs

J. Eng. Gas Turbines Power. October 1997, 119(4): 956–957.

DOI: https://doi.org/10.1115/1.2817081

Published Online: October 1, 1997

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Topics: Acoustics, Gas turbines, Honeycomb structures, Rotors, Stators

Journal Articles

The Acoustic Influence of Cell Depth on the Rotordynamic Characteristics of Smooth-Rotor/Honeycomb-Stator Annular Gas Seals

G. F. Kleynhans, D. W. Childs

J. Eng. Gas Turbines Power. October 1997, 119(4): 949–956.

DOI: https://doi.org/10.1115/1.2817079

Published Online: October 1, 1997

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Topics: Acoustics, Honeycomb structures, Rotors, Stators, Transfer functions, Damping, Rotordynamics, Stiffness, Algorithms, Capacitance

Journal Articles

Eccentricity Effects on the Rotordynamic Coefficients of Plain Annular Seals: Theory Versus Experiment

O. R. Marquette, D. W. Childs, L. San Andres

J. Tribol. July 1997, 119(3): 443–447.

DOI: https://doi.org/10.1115/1.2833515

Published Online: July 1, 1997

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Topics: Bearings, Equilibrium (Physics), Inertia (Mechanics), Leakage, Pressure drop, Pumps, Signal to noise ratio

Journal Articles

Closure to “Discussion of ‘Eccentricity Effects on the Rotordynamic Coefficients of Plain Annular Seals: Theory Versus Experiment’” (1997, ASME J. Tribol., 119, pp. 447–448)

O. R. Marquette, D. W. Childs, L. San Andres

J. Tribol. July 1997, 119(3): 448.

DOI: https://doi.org/10.1115/1.2833517

Published Online: July 1, 1997

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Journal Articles

Discussion: “Roughness Influence on Turbulent Flow Through Annular Seals Including Inertia Effects” (Lucas, V., Bonneau, O., and Freˆne, Jean, 1996, ASME J. Tribol., 118, pp. 175–182)

D. W. Childs

J. Tribol. October 1996, 118(4): 927.

DOI: https://doi.org/10.1115/1.2831630

Published Online: October 1, 1996

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Topics: Inertia (Mechanics), Surface roughness, Turbulence

Journal Articles

Experimental Leakage and Rotordynamic Results for Helically Grooved Annular Gas Seals

D. W. Childs, A. J. Gansle

J. Eng. Gas Turbines Power. April 1996, 118(2): 389–393.

DOI: https://doi.org/10.1115/1.2816601

Published Online: April 1, 1996

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Topics: Leakage, Stators, Honeycomb structures, Flow (Dynamics), Fluids, Stiffness, Whirls, Brakes, Pressure, Rotation

Journal Articles

An Extended Three-Control-Volume Theory for Circumferentially-Grooved Liquid Seals

O. R. Marquette, D. W. Childs

J. Tribol. April 1996, 118(2): 276–285.

DOI: https://doi.org/10.1115/1.2831296

Published Online: April 1, 1996

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Topics: Centrifugal pumps, Damping, Flow (Dynamics), Leakage, Leakage flows, Momentum, Pumps, Stiffness

Journal Articles

Thermohydrodynamic Analysis of Process-Liquid Hydrostatic Journal Bearings in Turbulent Regime, Part I: The Model and Perturbation Analysis

Zhou Yang, L. San Andres, D. W. Childs

J. Appl. Mech. September 1995, 62(3): 674–678.

DOI: https://doi.org/10.1115/1.2895999

Published Online: September 1, 1995

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Topics: Hydrostatics, Journal bearings, Thermohydrodynamics, Turbulence, Bearings, Flow (Dynamics), Fluid films, Fluids, Temperature, Compressibility

Journal Articles

Thermohydrodynamic Analysis of Process-Liquid Hydrostatic Journal Bearings in Turbulent Regime, Part II: Numerical Solution and Results

Zhou Yang, L. San Andres, D. W. Childs

J. Appl. Mech. September 1995, 62(3): 679–684.

DOI: https://doi.org/10.1115/1.2896000

Published Online: September 1, 1995

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Topics: Hydrostatics, Journal bearings, Thermohydrodynamics, Turbulence, Bearings, Temperature, Flow (Dynamics), Stiffness, Damping, Fluids

Journal Articles

Theory Versus Experiment for the Rotordynamic Characteristics of a Smooth Annular Gas Seal at Eccentric Positions

C. R. Alexander, D. W. Childs, Z. Yang

J. Tribol. January 1995, 117(1): 148–152.

DOI: https://doi.org/10.1115/1.2830591

Published Online: January 1, 1995

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Topics: Damping, Flow (Dynamics), Fluids, Pressure, Rotors, Stability, Stiffness, Whirls

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Journal citation

NARROW

Experimental and Theoretical Comparison of Two Swirl Brake Designs

Experimental Rotordynamic Coefficient Results for a Load-on-Pad Flexible-Pivot Tilting-Pad Bearing With Comparisons to Predictions From Bulk-Flow and Reynolds Equation Models

Understanding Friction Factor Behavior in Liquid Annular Seals With Deliberately Roughened Surfaces: Roughness Geometric Characteristics Defining Flow Resistance

Measurements Versus Predictions for the Dynamic Impedance of Annular Gas Seals—Part II: Smooth and Honeycomb Geometries

Measurements Versus Predictions for the Dynamic Impedance of Annular Gas Seals—Part I: Test Facility and Apparatus

Measurements of Rotordynamic Coefficients of Hybrid Bearings With (a) a Plugged Orifice, and (b) a Worn Land Surface

Experimental and Theoretical Comparison of Two Swirl Brake Designs

Experimental Rotordynamic Coefficient Results for (a) a Labyrinth Seal With and Without Shunt Injection and (b) a Honeycomb Seal

A Comparison of Experimental Rotordynamic Coefficients and Leakage Characteristics Between Hole-Pattern Gas Damper Seals and a Honeycomb Seal

Theory Versus Experiment for the Effects of Pressure Ratio on the Performance of an Orifice-Compensated Hybrid Bearing

Closure to “Discussion of ‘The Acoustic Influence of Cell Depth on the Rotordynamic Characteristics of Smooth-Rotor/Honeycomb-Stator Annular Gas Seals’” (1997, ASME J. Eng. Gas Turbines Power, 119, p. 956)

The Acoustic Influence of Cell Depth on the Rotordynamic Characteristics of Smooth-Rotor/Honeycomb-Stator Annular Gas Seals

Eccentricity Effects on the Rotordynamic Coefficients of Plain Annular Seals: Theory Versus Experiment

Closure to “Discussion of ‘Eccentricity Effects on the Rotordynamic Coefficients of Plain Annular Seals: Theory Versus Experiment’” (1997, ASME J. Tribol., 119, pp. 447–448)

Discussion: “Roughness Influence on Turbulent Flow Through Annular Seals Including Inertia Effects” (Lucas, V., Bonneau, O., and Freˆne, Jean, 1996, ASME J. Tribol., 118, pp. 175–182)

Experimental Leakage and Rotordynamic Results for Helically Grooved Annular Gas Seals

An Extended Three-Control-Volume Theory for Circumferentially-Grooved Liquid Seals

Thermohydrodynamic Analysis of Process-Liquid Hydrostatic Journal Bearings in Turbulent Regime, Part I: The Model and Perturbation Analysis

Thermohydrodynamic Analysis of Process-Liquid Hydrostatic Journal Bearings in Turbulent Regime, Part II: Numerical Solution and Results

Theory Versus Experiment for the Rotordynamic Characteristics of a Smooth Annular Gas Seal at Eccentric Positions

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