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Research Papers: Fluid-Structure Interaction

Experimental Investigation of the Location of Maximum Erosive Wear Damage in Elbows

[+] Author and Article Information
Quamrul H. Mazumder

Department of Computer Science, Engineering Science and Physics, University of Michigan-Flint, Flint, MI 48502

Siamack A. Shirazi, Brenton McLaury

 The University of Tulsa, 600 South College Avenue, Tulsa, OK 74104

J. Pressure Vessel Technol 130(1), 011303 (Jan 17, 2008) (7 pages) doi:10.1115/1.2826426 History: Received April 24, 2006; Revised January 04, 2007; Published January 17, 2008

Erosive wear damage of elbows due to solid particle impact has been recognized as a significant problem in several fluid handling industries. Solid particle erosion is a complex phenomenon due to different parameters causing material removal from the metal surface. The particle density, size, shape, velocity, concentration, impact angle, and impacting surface material properties are some of the major parameters. Among the various factors, the particle impact velocity has the greatest influence in erosion. The particle impact velocity and impact angles depend on the fluid velocity and fluid properties. The particle to particle, particle to fluid, and particle to wall interactions increase the complexity of the erosive wear behavior. In multiphase flow, the presence of different fluids and their corresponding spatial distribution of the phases, adds another dimension to the problem. Most of the previous investigations were focused on determination of erosion in terms of mass loss of the eroding surfaces without identifying the specific location of the maximum erosive wear. During this investigation, magnitude of erosion at different location of an elbow specimen was measured to determine the location of maximum erosion. Experimental investigation of erosion in single-phase and multiphase flows was conducted at different fluid velocities. Both mass loss and thickness loss measurements were taken to characterize erosion behavior and erosion patterns in an elbow. Experimental results showed different erosion behavior and location of maximum erosion damage in single-phase and multiphase flows. The locations of maximum wear due to erosion were also different for horizontal flow compared to vertical flow.

Copyright © 2008 by American Society of Mechanical Engineers
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References

Figures

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Figure 1

Selmer-Olsen (10) measurement (Vsg=29m∕s, Vsl=0.03m∕s)

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Figure 2

Selmer-Olsen (10) measurement (Vsg=29m∕s, Vsl=0.9m∕s)

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Figure 3

Erosion profile in the outer wall of an elbow (11)

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Figure 4

Thickness loss measurement locations in the elbow specimen

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Figure 5

Scratches in the elbow specimen used for erosion measurement

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Figure 6

Scratch measurement of elbow specimen using profilometer

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Figure 7

Thickness loss measurement of elbow specimen (Vgas=34.1m∕s, aluminum, 55deg)

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Figure 8

Thickness loss profile of elbow specimen in single-phase flow (Vgas=34.1m∕s, aluminum)

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Figure 9

Thickness loss measurement of elbow specimen at Vsg=9.8m∕s, Vsl=0.30m∕s, aluminum, 45deg

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Figure 10

Thickness loss measurement of elbow specimen at Vsg=27.4m∕s, Vsl=0.30m∕s, aluminum, 45deg

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Figure 11

Thickness loss measurement of elbow specimen at Vsg=34.1m∕s, Vsl=0.03m∕s, aluminum 55deg

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Figure 12

Thickness loss profile of elbow specimen at different gas velocities (vertical, Vsl=0.03m∕s)

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Figure 13

Thickness loss profile of elbow specimen at different gas velocities (horizontal, Vsl=0.03m∕s)

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Figure 14

Thickness loss profile of elbow specimen at different gas velocities (vertical, Vsl=0.30m∕s)

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Figure 15

Thickness loss profile of elbow specimen at different gas velocities (horizontal, Vsl=0.30m∕s)

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Figure 16

Photograph of vertical elbow specimen holder after several erosion tests

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