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Abstract

A comparison of the agglomeration rates of liquid, solid, and a mixture of liquid + solid aerosol particles in an acoustic field reveals two basic mechanisms. Initially the agglomeration is fast and dominated by the orthokinetic effect. Thereafter, a slower agglomeration mechanism, driven by acoustic streaming in the chamber, takes over and gives rise to giant particles. Discrepancies between geometric and aerodynamic properties of soot agglomerates are accounted for by their fractal structure. Orthokinetic agglomeration of fractal soot particles is made `visible' in the distribution function by the addition of liquid droplets.

Additional information

Authors: MAGILL J, JRC Ispra (IT);RICHTER K, JRC Ispra (IT);FOURCAUDOT S, JRC Ispra (IT);GALLEGO-JUAREZ J A, Instituto de Acustica, Madrid (ES);RIERA-FRANCO DE SARABIA E, Instituto de Acustica, Madrid (ES);RODRIGUEZ-CORRAL G, Instituto de Acustica, Madrid (ES)
Bibliographic Reference: Paper presented: International Symposium on Nonlinear Acoustics (INSA 12), Austin, Texas (US), August 27-31, 1990
Availability: Available from (1) as Paper EN 35438 ORA
Record Number: 199011070 / Last updated on: 1994-12-01
Category: PUBLICATION
Original language: en
Available languages: en