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EXPERIMENTAL INVESTIGATION OF SPRAY DEVELOPMENT IMMEDIATELY BEHIND A TIRE ROLLING ON A WET SURFACE
by
Dennis Alan Plocher
A Dissertation Presented to the
FACULTY OF THE USC GRADUATE SCHOOL
UNIVERSITY OF SOUTHERN CALIFORNIA
In Partial Fulfillment of the
Requirements for the Degree
DOCTOR OF PHILOSOPHY
(AEROSPACE ENGINEERING)
August 2011
Copyright 2011 Dennis Alan Plocher
Object Description
| 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 |
Description
| Title | Page 1 |
| Full text | EXPERIMENTAL INVESTIGATION OF SPRAY DEVELOPMENT IMMEDIATELY BEHIND A TIRE ROLLING ON A WET SURFACE by Dennis Alan Plocher A Dissertation Presented to the FACULTY OF THE USC GRADUATE SCHOOL UNIVERSITY OF SOUTHERN CALIFORNIA In Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY (AEROSPACE ENGINEERING) August 2011 Copyright 2011 Dennis Alan Plocher |
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