Experiments on spray from a rolling tire
Experiments on spray from a rolling tire
- Neue Suche nach: Radovich, Charles
- Neue Suche nach: Plocher, Dennis
- Neue Suche nach: Radovich, Charles
- Neue Suche nach: Plocher, Dennis
A novel laboratory apparatus has been built to understand the key mechanisms behind spray emerging from a rolling tire. Water leaving the tire from a single circumferential groove is analyzed using high-speed imaging. Visualizations reveal the formation of thin sheets of water connecting the roadway and the tire that eventually break into a droplet field. It is proposed that sheet breakup is the result of hydrodynamic instability. There is a preferred wavelength for disturbances on the sheet. After breakup, this preferred wavelength is preserved in slender ribs (or ligaments) that continue downstream until they disintegrate into droplets. Weber numbers based on the water density, tire circumferential speed and groove width vary in the range 1,900 - 60,300. The transition from sheet to spray is accelerated with increasing Weber number. Farther downstream, it is shown that droplet size and velocity distributions can be quantified as a function of Weber number.
Dokumentinformationen
Experiments on spray from a rolling tire
Experimentelle Untersuchung des Spritzens von einem rollenden Reifen
2009
15 Seiten, 18 Bilder, 3 Quellen
Aufsatz (Konferenz)
Englisch
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