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RESEARCH PAPERS

Unsteady Analysis of a Mechanical Seal Using Duhamel’s Method

[+] Author and Article Information
Richard F. Salant, Bin Cao

George W. Woodruff School of Mechanical Engineering,  Georgia Institute of Technology, Atlanta, Georgia 30332-0405

J. Tribol 127(3), 623-631 (Jun 09, 2004) (9 pages) doi:10.1115/1.1924427 History: Received February 24, 2004; Revised June 09, 2004

An unsteady numerical model of a mechanical seal, with mixed lubrication, has been developed. The thermal analysis is performed using Duhamel’s method in combination with a numerical experiment to determine Duhamel’s auxiliary function. The results using this semiempirical approach compare well with those from a finite element analysis. The model has been used to predict the performance of a mechanical seal during startup and shutdown.

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Copyright © 2005 by American Society of Mechanical Engineers
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Figures

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Figure 1

Schematic of seal

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Figure 2

Approximation of Duhamel’s auxiliary function for temperature

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Figure 3

Approximation of Duhamel’s auxiliary function for thermal deformation

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Figure 4

Computational procedure

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Figure 5

Validation of Duhamel’s method for temperature

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Figure 6

Validation of Duhamel’s method for thermal deformation

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Figure 7

Inertial “force,” startup

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Figure 8

Maximum face temperature, startup

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Figure 9

Average film thickness, startup

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Figure 10

Film thickness profiles, startup, polished faces

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Figure 11

Leakage rate, startup

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Figure 12

Maximum face temperature, shutdown

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Figure 13

Average film thickness, shutdown

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Figure 14

Leakage rate, shutdown

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