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Journal Articles

Effect of Rub-Grooves on Leakage and Windage Heating in Straight-Through Labyrinth Seals

Kali Charan Nayak, Pradip Dutta
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. April 2016, 138(2): 022201.
Paper No: TRIB-14-1247
https://doi.org/10.1115/1.4031431
Published Online: October 15, 2015
View Article titled, Effect of Rub-Grooves on Leakage and Windage Heating in Straight-Through Labyrinth Seals
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Topics: Clearances (Engineering), Flow (Dynamics), Heating, Honeycomb structures, Leakage, Computational fluid dynamics, Stators, Turbulence
Journal Articles

Rotordynamic-Coefficient and Leakage Characteristics for Hole-Pattern-Stator Annular Gas Seals—Measurements Versus Predictions

Dara W. Childs, Leland T. Jordan Professor of Mechanical Engineering, Jonathan Wade, Research Assistant
Journal: Journal of Tribology
Publisher: ASME
Article Type: Technical Papers
J. Tribol. April 2004, 126(2): 326–333.
https://doi.org/10.1115/1.1611502
Published Online: April 19, 2004
View Article titled, Rotordynamic-Coefficient and Leakage Characteristics for Hole-Pattern-Stator Annular Gas Seals—Measurements Versus Predictions
Open the PDF for Rotordynamic-Coefficient and Leakage Characteristics for Hole-Pattern-Stator Annular Gas Seals—Measurements Versus Predictions in another window
Topics: Clearances (Engineering), Damping, Flow (Dynamics), Leakage, Pressure, Rotors, Stators, Stiffness, Excitation, Temperature
Journal Articles

Experimental Study on Static and Dynamic Characteristics of Liquid Annular Convergent-Tapered Damper Seals With Honeycomb Roughness Pattern

Satoru Kaneko, Professor, Takashi Ikeda, Research Engineer, Takuro Saito, Research Engineer, Shin Ito, Research Engineer
Journal: Journal of Tribology
Publisher: ASME
Article Type: Technical Papers
J. Tribol. July 2003, 125(3): 592–599.
https://doi.org/10.1115/1.1538621
Published Online: June 19, 2003
View Article titled, Experimental Study on Static and Dynamic Characteristics of Liquid Annular Convergent-Tapered Damper Seals With Honeycomb Roughness Pattern
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Topics: Clearances (Engineering), Dampers, Damping, Honeycomb structures, Leakage flows, Pressure, Rotors, Spin (Aerodynamics), Spinning (Textile), Stators
Journal Articles

Theory Versus Experiment for the Rotordynamic Characteristics of a High Pressure Honeycomb Annular Gas Seal at Eccentric Positions

Mark Weatherwax, Machinery Engineer,, Dara W. Childs, Leland Jordan Professor of Mechanical Engineering,
Journal: Journal of Tribology
Publisher: ASME
Article Type: Technical Papers
J. Tribol. April 2003, 125(2): 422–429.
https://doi.org/10.1115/1.1504093
Published Online: March 19, 2003
View Article titled, Theory Versus Experiment for the Rotordynamic Characteristics of a High Pressure Honeycomb Annular Gas Seal at Eccentric Positions
Open the PDF for Theory Versus Experiment for the Rotordynamic Characteristics of a High Pressure Honeycomb Annular Gas Seal at Eccentric Positions in another window
Topics: Damping, High pressure (Physics), Honeycomb structures, Leakage, Pressure, Rotors, Stators, Stiffness, Friction, Excitation
Journal Articles

A Comparison of Rotordynamic-Coefficient Predictions for Annular Honeycomb Gas Seals Using Three Different Friction-Factor Models

Rohan J. D’Souza, Graduate Research Assistant, Dara W. Childs, Leland T. Jordan Professor of Mechanical Engineering
Journal: Journal of Tribology
Publisher: ASME
Article Type: Technical Papers
J. Tribol. July 2002, 124(3): 524–529.
https://doi.org/10.1115/1.1456086
Published Online: May 31, 2002
View Article titled, A Comparison of Rotordynamic-Coefficient Predictions for Annular Honeycomb Gas Seals Using Three Different Friction-Factor Models
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Topics: Friction, Honeycomb structures, Clearances (Engineering), Stators, Rotors, Damping
Journal Articles

Theory Versus Experiment for the Rotordynamic Impedances of Two Hole-Pattern-Stator Gas Annular Seals

Christopher G. Holt, Research Assistant, Dara W. Childs, Leland T. Jordan Professor of Mechanical Engineering
Journal: Journal of Tribology
Publisher: ASME
Article Type: Technical Papers
J. Tribol. January 2002, 124(1): 137–143.
https://doi.org/10.1115/1.1398297
Published Online: June 5, 2001
View Article titled, Theory Versus Experiment for the Rotordynamic Impedances of Two Hole-Pattern-Stator Gas Annular Seals
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Topics: Damping, Honeycomb structures, Leakage, Pressure, Rotors, Stators, Stiffness, Temperature, Excitation, Density
Journal Articles

A New Friction Factor Model and Entrance Loss Coefficient for Honeycomb Annular Gas Seals

Amro M. Al-Qutub, D. Elrod, Hugh W. Coleman
Journal: Journal of Tribology
Publisher: ASME
Article Type: Technical Papers
J. Tribol. July 2000, 122(3): 622–627.
https://doi.org/10.1115/1.555411
Published Online: July 15, 1999
View Article titled, A New Friction Factor Model and Entrance Loss Coefficient for Honeycomb Annular Gas Seals
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Topics: Friction, Honeycomb structures, Mach number
Journal Articles

Discussion: “Annular Honeycomb-Stator Turbulent Gas Seal Analysis Using a New Friction-Factor Model Based on Flat Plate Tests” (Ha, T. W., and Childs, D. W., 1994, ASME J. Tribol., 116, pp. 352–359)

J. Scharrer
Journal: Journal of Tribology
Publisher: ASME
Article Type: Discussions
J. Tribol. April 1994, 116(2): 359.
https://doi.org/10.1115/1.2927234
Published Online: April 1, 1994
View Article titled, Discussion: “Annular Honeycomb-Stator Turbulent Gas Seal Analysis Using a New Friction-Factor Model Based on Flat Plate Tests” (Ha, T. W., and Childs, D. W., 1994, ASME J. Tribol., 116, pp. 352–359)
Open the PDF for Discussion: “Annular Honeycomb-Stator Turbulent Gas Seal Analysis Using a New Friction-Factor Model Based on Flat Plate Tests” (Ha, T. W., and Childs, D. W., 1994, ASME J. Tribol., 116, pp. 352–359) in another window
Topics: Flat plates, Friction, Honeycomb structures, Stators, Turbulence
Journal Articles

Annular Honeycomb-Stator Turbulent Gas Seal Analysis Using a New Friction-Factor Model Based on Flat Plate Tests

T. W. Ha, D. W. Childs
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. April 1994, 116(2): 352–359.
https://doi.org/10.1115/1.2927233
Published Online: April 1, 1994
View Article titled, Annular Honeycomb-Stator Turbulent Gas Seal Analysis Using a New Friction-Factor Model Based on Flat Plate Tests
Open the PDF for Annular Honeycomb-Stator Turbulent Gas Seal Analysis Using a New Friction-Factor Model Based on Flat Plate Tests in another window
Topics: Flat plates, Friction, Honeycomb structures, Stators, Turbulence, Leakage, Geometry, Mach number, Pressure, Stiffness
Journal Articles

Closure to “Discussion of ‘Annular Honeycomb-Stator Turbulent Gas Seal Analysis Using a New Friction-Factor Model Based on Flat Plate Tests’” (1994, ASME J. Tribol., 116, p. 359)

T. W. Ha, D. W. Childs
Journal: Journal of Tribology
Publisher: ASME
Article Type: Discussions
J. Tribol. April 1994, 116(2): 360.
https://doi.org/10.1115/1.2927235
Published Online: April 1, 1994
View Article titled, Closure to “Discussion of ‘Annular Honeycomb-Stator Turbulent Gas Seal Analysis Using a New Friction-Factor Model Based on Flat Plate Tests’” (1994, ASME J. Tribol., 116, p. 359)
Open the PDF for Closure to “Discussion of ‘Annular Honeycomb-Stator Turbulent Gas Seal Analysis Using a New Friction-Factor Model Based on Flat Plate Tests’” (1994, ASME J. Tribol., 116, p. 359) in another window
Topics: Flat plates, Friction, Honeycomb structures, Stators, Turbulence
Journal Articles

Friction-Factor Data for Flat-Plate Tests of Smooth and Honeycomb Surfaces

T. W. Ha, Dara W. Childs
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. October 1992, 114(4): 722–729.
https://doi.org/10.1115/1.2920941
Published Online: October 1, 1992
View Article titled, Friction-Factor Data for Flat-Plate Tests of Smooth and Honeycomb Surfaces
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Topics: Flat plates, Friction, Honeycomb structures, Clearances (Engineering), Flow (Dynamics), Pressure, Reynolds number
Journal Articles

Discussion: “Friction-Factor Data for Flat-Plate Tests of Smooth and Honeycomb Surfaces” (Ha, T. W., and Childs, Dara W., 1992, ASME J. Tribol., 114, pp. 722–729)

J. K. Scharrer
Journal: Journal of Tribology
Publisher: ASME
Article Type: Discussions
J. Tribol. October 1992, 114(4): 729–730.
https://doi.org/10.1115/1.2928817
Published Online: October 1, 1992
View Article titled, Discussion: “Friction-Factor Data for Flat-Plate Tests of Smooth and Honeycomb Surfaces” (Ha, T. W., and Childs, Dara W., 1992, ASME J. Tribol., 114, pp. 722–729)
Open the PDF for Discussion: “Friction-Factor Data for Flat-Plate Tests of Smooth and Honeycomb Surfaces” (Ha, T. W., and Childs, Dara W., 1992, ASME J. Tribol., 114, pp. 722–729) in another window
Topics: Flat plates, Friction, Honeycomb structures
Journal Articles

Closure to “Discussion of ‘Friction-Factor Data for Flat-Plate Tests of Smooth and Honeycomb Surfaces’” (1992, ASME J. Tribol., 114, pp. 729–730)

T. W. Ha, Dara W. Childs
Journal: Journal of Tribology
Publisher: ASME
Article Type: Discussions
J. Tribol. October 1992, 114(4): 730.
https://doi.org/10.1115/1.2928818
Published Online: October 1, 1992
View Article titled, Closure to “Discussion of ‘Friction-Factor Data for Flat-Plate Tests of Smooth and Honeycomb Surfaces’” (1992, ASME J. Tribol., 114, pp. 729–730)
Open the PDF for Closure to “Discussion of ‘Friction-Factor Data for Flat-Plate Tests of Smooth and Honeycomb Surfaces’” (1992, ASME J. Tribol., 114, pp. 729–730) in another window
Topics: Flat plates, Friction, Honeycomb structures
Journal Articles

Friction-Factor Characteristics for Narrow Channels With Honeycomb Surfaces

T. W. Ha, G. L. Morrison, D. W. Childs
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. October 1992, 114(4): 714–721.
https://doi.org/10.1115/1.2920940
Published Online: October 1, 1992
View Article titled, Friction-Factor Characteristics for Narrow Channels With Honeycomb Surfaces
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Topics: Friction, Honeycomb structures, Reynolds number, Flow (Dynamics), Acoustics, Pipes, Resonance, Turbulence
Journal Articles

An Annular Gas Seal Analysis Using Empirical Entrance and Exit Region Friction Factors

D. A. Elrod, D. W. Childs, C. C. Nelson
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. April 1990, 112(2): 196–204.
https://doi.org/10.1115/1.2920242
Published Online: April 1, 1990
View Article titled, An Annular Gas Seal Analysis Using Empirical Entrance and Exit Region Friction Factors
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Topics: Friction, Rotors, Flow (Dynamics), Stiffness, Damping, Honeycomb structures, Leakage, Shear stress, Stators
Journal Articles

Annular Honeycomb Seals: Test Results for Leakage and Rotordynamic Coefficients; Comparisons to Labyrinth and Smooth Configurations

D. Childs, D. Elrod, K. Hale
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. April 1989, 111(2): 293–300.
https://doi.org/10.1115/1.3261911
Published Online: April 1, 1989
View Article titled, Annular Honeycomb Seals: Test Results for Leakage and Rotordynamic Coefficients; Comparisons to Labyrinth and Smooth Configurations
Open the PDF for Annular Honeycomb Seals: Test Results for Leakage and Rotordynamic Coefficients; Comparisons to Labyrinth and Smooth Configurations in another window
Topics: Honeycomb structures, Leakage, Fluids, Rotation, Stability, Clearances (Engineering), Damping, Dimensions, Sealing (Process), Stiffness
Journal Articles

Discussion: “Annular Honeycomb Seals: Test Results for Leakage and Rotordynamic Coefficients; Comparisons to Labyrinth and Smooth Configurations” (Childs, D., Elrod, D., and Hale, K., 1989, ASME J. Tribol., 111, pp. 293–300)

J. K. Scharrer
Journal: Journal of Tribology
Publisher: ASME
Article Type: Discussions
J. Tribol. April 1989, 111(2): 300–301.
https://doi.org/10.1115/1.3261912
Published Online: April 1, 1989
View Article titled, Discussion: “Annular Honeycomb Seals: Test Results for Leakage and Rotordynamic Coefficients; Comparisons to Labyrinth and Smooth Configurations” (Childs, D., Elrod, D., and Hale, K., 1989, ASME J. Tribol., 111, pp. 293–300)
Open the PDF for Discussion: “Annular Honeycomb Seals: Test Results for Leakage and Rotordynamic Coefficients; Comparisons to Labyrinth and Smooth Configurations” (Childs, D., Elrod, D., and Hale, K., 1989, ASME J. Tribol., 111, pp. 293–300) in another window
Topics: Honeycomb structures, Leakage
Journal Articles

Closure to “Discussion of ‘Annular Honeycomb Seals: Test Results for Leakage and Rotordynamic Coefficients; Comparisons to Labyrinth and Smooth Configurations’” (1989, ASME J. Tribol., 111, pp. 300–301)

D. Childs, D. Elrod, K. Hale
Journal: Journal of Tribology
Publisher: ASME
Article Type: Discussions
J. Tribol. April 1989, 111(2): 301.
https://doi.org/10.1115/1.3261913
Published Online: April 1, 1989
View Article titled, Closure to “Discussion of ‘Annular Honeycomb Seals: Test Results for Leakage and Rotordynamic Coefficients; Comparisons to Labyrinth and Smooth Configurations’” (1989, ASME J. Tribol., 111, pp. 300–301)
Open the PDF for Closure to “Discussion of ‘Annular Honeycomb Seals: Test Results for Leakage and Rotordynamic Coefficients; Comparisons to Labyrinth and Smooth Configurations’” (1989, ASME J. Tribol., 111, pp. 300–301) in another window
Topics: Honeycomb structures, Leakage
Journal Articles

An Entrance Region Friction Factor Model Applied to Annular Seal Analysis: Theory Versus Experiment for Smooth and Honeycomb Seals

D. Elrod, C. Nelson, D. Childs
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. April 1989, 111(2): 337–343.
https://doi.org/10.1115/1.3261919
Published Online: April 1, 1989
View Article titled, An Entrance Region Friction Factor Model Applied to Annular Seal Analysis: Theory Versus Experiment for Smooth and Honeycomb Seals
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Topics: Entrance region, Friction, Honeycomb structures, Rotors, Stators, Stiffness, Damping, Ducts, Fluids, Leakage
Journal Articles

Experimental Results for Labyrinth Gas Seals With Honeycomb Stators: Comparisons to Smooth-Stator Seals and Theoretical Predictions

Larry Hawkins, Dara Childs, Keith Hale
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. January 1989, 111(1): 161–168.
https://doi.org/10.1115/1.3261867
Published Online: January 1, 1989
View Article titled, Experimental Results for Labyrinth Gas Seals With Honeycomb Stators: Comparisons to Smooth-Stator Seals and Theoretical Predictions
Open the PDF for Experimental Results for Labyrinth Gas Seals With Honeycomb Stators: Comparisons to Smooth-Stator Seals and Theoretical Predictions in another window
Topics: Honeycomb structures, Stators, Rotors, Clearances (Engineering), Damping, Stiffness, Compressible flow, Pressure, Stability