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Title	Experimental investigation of spray development immediately behind a tire rolling on a wet surface
Author	Plocher, Dennis Alan
Author email	plocher@usc.edu
Degree	Doctor of Philosophy
Document type	Dissertation
Degree program	Aerospace Engineering
School	Viterbi School of Engineering
Date defended/completed	2011-06-27
Date submitted	2011-07-27
Date approved	2011-07-27
Restricted until	2011-07-27
Date published	2011-07-27
Advisor (committee chair)	Browand, Fredrick K.
Advisor (committee member)	Spedding, Geoffrey R. Redekopp, Larry G. Lu, Stephen
Abstract	The spray pattern immediately behind a single-groove tire rolling on a wet surface is produced in the laboratory using a specially designed tire spray simulator. The spray behavior is examined using high speed video. To characterize how rapidly water drains from the groove, a concept referred to as time-to-drain is defined and a technique developed and demonstrated for its measurement. ❧ The water-air interface in the groove of a rotating tire feels an acceleration from the denser fluid into the less dense fluid—the geometry of the Rayleigh-Taylor problem. Earlier work (Browand, Plocher & Radovich 2010) observed a banded structure downstream of the tire patch and suggested it was due to the Rayleigh-Taylor instability. This present work examines that suggestion by computing spectra from time series at different points in the flow. Frequencies at spectral peaks are converted to wavenumbers which are found to lie in the Rayleigh-Taylor unstable band.
Keyword	time-to-drain; tire spray; splash and spray; Rayleigh-Taylor instability;
Language	English
Part of collection	University of Southern California dissertations and theses
Publisher (of the original version)	University of Southern California
Place of publication (of the original version)	Los Angeles, California
Publisher (of the digital version)	University of Southern California. Libraries
Provenance	Electronically uploaded by the author
Type	texts
Legacy record ID	usctheses-m
Rights	Plocher, Dennis Alan
Access conditions	The author retains rights to his/her dissertation, thesis or other graduate work according to U.S. copyright law. Electronic access is being provided by the USC Libraries in agreement with the author, as the original true and official version of the work, but does not grant the reader permission to use the work if the desired use is covered by copyright. It is the author, as rights holder, who must provide use permission if such use is covered by copyright. The original signature page accompanying the original submission of the work to the USC Libraries is retained by the USC Libraries and a copy of it may be obtained by authorized requesters contacting the repository e-mail address given.
Repository name	University of Southern California Digital Library
Repository address	USC Digital Library, University of Southern California, University Park Campus MC 7002, 106 University Village, Los Angeles, California 90089-7002, USA
Repository email	cisadmin@usc.edu
Archival file	uscthesesreloadpub_Volume71/etd-PlocherDen-183.pdf

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