Drop1et-Turbu1ence Interactions Over A Wide Spectra1 Range.
Abstract
In the last year, the unsteady, three-dimensional, incompressible, viscous flow interactions between a pair of vortex tubes advected by a uniform free stream and a spherical particle held fixed in space was investigated numerically for a range of particle Reynolds numbers between 20 and 100. Useful correlations of lift coefficient, moment coefficient, and drag coefficient with velocity fluctuation, Reynolds number, offset distance, and initial vortex size have been obtained and reported. A new mechanism based upon droplet lift has been suggested for the dispersion of sprays. Interactions with an array of vortices have resulted in predictive capabilities useful for the study of droplet dispersion in a spray. The case of large vortex-to- droplet diameter has been studied showing that droplet deflection increases with vortex size. The investigation for the heat and mass transfer of a droplet interacting with vortex tubes showed significant sensitivity to the configuration of the interaction. Nusselt numbers were modified from their axisymmetric values.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1995
- Accession Number
- ADA299578
Entities
People
- Inhul Kim
- M. Masoudi
- Said E. Elghobashi
- William A. Sirignano
Organizations
- University of California, Irvine