Shape Recovery of a Levitated Aspherical Droplet From 2D Image Information

[+] Author and Article Information
Sayavur Bakhtiyarov1

Mechanical Engineering Department, 122 Weir Hall, 801 Leroy Place, New Mexico Institute of Mining and Technology, Socorro, NM 87801-4796

Mihai Dupac

103 Echlin Blvd, Friction Products Division, Haldex Brake Products, Prattville, AL 36067

Ruel A. Overfelt

202 Ross Hall, Mechanical Engineering Department, Auburn University, Auburn, AL 36849-5341


Corresponding author.

J. Fluids Eng 128(3), 463-466 (Sep 23, 2005) (4 pages) doi:10.1115/1.2175157 History: Received June 17, 2004; Revised September 23, 2005

This paper presents an image processing technique in order to predict the shape of a levitated aspherical droplet. The technique is of great importance to containerless materials processing. A majority of the electromagnetic levitation techniques utilizes two cameras at right angles to observe both transversal and frontal views. This allows obtaining two images of the droplet at instant time. In many cases, the portion of the frontal image is missing due to the heating coil. The newly developed technique allows restoration of the missing portion of the image information. The through image can be reconstructed by combining the recovered shapes. A special computer program is generated to simulate a normalized volume of the droplet.

Copyright © 2006 by American Society of Mechanical Engineers
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Figure 1

Transversal (a) and frontal (b) views of the droplet in a levitation process

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Figure 2

Grayscale representation of frontal view of the droplet in a levitation process (a) and its recovered view (b)

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Figure 3

A perfect sphere model to validate the restoration procedure

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Figure 4

Reconstructed images of droplet (a) and perfect sphere (b)

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Figure 5

Final reconstructed images of droplet (a) and perfect sphere (b)



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