Transport of aerial spray, I. A model of aerial dispersion

✍ Scribed by D.H. Bache; W.J.D. Sayer

• Publisher: Elsevier Science
• Year: 1975
• Weight: 609 KB
• Volume: 15
• Category: Article
• ISSN: 0002-1571
• DOI: 10.1016/0002-1571(75)90009-6

✦ Synopsis

A simple model representing deposition from a sedimenting cloud diffusing about its centre of gravity was compared with tracer distributions obtained from aerially released line sources in the lowest 15 m of the atmosphere. An estimate of linear growth in cloud dimensions was derived for its initial phase of dispersion. Comparison of the model with independent data corroborated the growth law and demonstrated its response to changes in atmospheric turbulence intensity. For clouds of light particles, it was shown that the distribution was characterised by the position of maximum concentration, which occurs at a distance proportional to the release height and inversely proportional to the turbulent intensity. Estimates were provided for ground deposition from line sources oriented parallel to and perpendicular to the wind direction.