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TECHNICAL BRIEFS

Pseudocylinder Parametrization For Mine Impact Burial Prediction

[+] Author and Article Information
Peter C. Chu1

Naval Ocean Analysis and Prediction Laboratory,  Naval Postgraduate School, Monterey, CA 93943pcchu@nps.edu

Chenwu Fan

Naval Ocean Analysis and Prediction Laboratory,  Naval Postgraduate School, Monterey, CA 93943

1

Corresponding author: Peter C Chu, Naval Postgraduate School, Monterey, CA 93943. Telephone: 1-831-656-3688; fax: 1-831-656-2712.

J. Fluids Eng 127(6), 1215-1220 (Aug 04, 2005) (6 pages) doi:10.1115/1.2060741 History: Received January 04, 2005; Revised August 04, 2005

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Copyright © 2005 by American Society of Mechanical Engineers
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Figures

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Figure 1

Axially symmetric cylindrical mine. Here, χ is the distance between the COV (B) and COM (X), and (L,R) are the cylinder’s length and radius.

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Figure 2

Three coordinate systems

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Figure 3

Mine with nose, tail, and cylindrical body

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Figure 4

Location of cv, cev, and cm. Here, ε is the distance between cv and cm; χ is the distance between cev and cm.

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Figure 5

Six model mines used in Carderock test pond with two different lengths

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Figure 6

Movement of Mine #6 (L=1.01m, ρ=2.1×103kgm−3) with χ=−0.0077m and ψ2=−14.0° obtained from (a) experiment, (b) 3D IMPACT35 model, and (c) 2D Impact28 model

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Figure 7

Movement of Mine #5 (L=1.01m, ρ=2.1×103kgm−3) with χ=0.0045m and ψ2=42.2° obtained from the (a) experiment, (b) 3D IMPACT35 model, and (c) 2D Impact28 model

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Figure 8

Movement of cylinder #2 (L=0.505m, ρ=2.1×103kgm−3) with χ=0 and ψ2=87.0° obtained from the (a) experiment, (b) 3D IMPACT35 model, and (c) 2D Impact28 model

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Figure 9

A comparison among observed (Ext-2 data) and predicted burial depths

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Figure 10

Dependence of (a) observational data number, and of root-mean-square errors of the prediction for (b) x, (c) y, (d) z, (e) ψ2, (f) ψ3 on the mines’ falling time.

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