Experimental hydrodynamics of spherical projectiles impacting on a free surface using high speed imaging techniques
Name
63283735-MIT.pdf
Description
Full printable version
Size
11.92 MB
Format
Adobe PDF
Checksum (MD5)
83261a97d5c1d36805cd5ce3099bd781
Author(s)
Laverty, Stephen Michael
Advisor(s)
Alexandra H. Techet.
Date Issued
2005
Publisher
Massachusetts Institute of Technology
Abstract
This thesis looks at the hydrodynamics of spherical projectiles impacting the free surface using a unique experimental WebLab facility. Experiments were performed to determine the force impact coefficients of spheres and then compare obtained results to theories developed by Von-Karman [ 19] and Wagner [20]. It was found that experimental results matched a generalized Wagner approach developed by Touvia Miloh [12]. A critical impact speed for splash formation was determined before which no splash cavity would form. The cone angle formed behind an impacting object was also studied. The cone angle was found to be a function of depth and impact speed over the range of impact velocities tested. Steel spheres ranging in diameter from 0.64 cm (1/4 in) to 5.08 cm (2 in) were used at impact speeds from 0 to 6.9 m/s. Standard billiard balls of diameter 5.72 cm (2.25 in) were also used in this study. As part of this project, the WebLab facility was constructed. iMarine WebLab is an interactive teaching tool used to educate students in various aspects of marine hydrodynamics and experimental fluid mechanics.
Description
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 2005.
Includes bibliographical references (leaves 78-80).
Subjects
Ocean Engineering.
MIT Department
Massachusetts Institute of Technology. Department of Ocean Engineering
Terms of Use
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