GASDYNAMIC AGGLOMERATION OF AEROSOLS .1. ACOUSTIC-WAVES

被引:47
作者
TEMKIN, S
机构
[1] Department of Mechanical and Aerospace Engineering, Rutgers - the State University of New Jersey, Piscataway
关键词
D O I
10.1063/1.868180
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
In this paper acoustic agglomeration of aerosols is studied in its simplest form, using a time-averaged form of the coalescence equations. An acoustic coagulation kernel is introduced that neglects all nonlinear effects, as well as particle interactions. Based on this model, it is shown that an acoustic frequency exists that optimizes the coalescence process. This optimum frequency does not have a unique value for all distributions, but for size distributions that are not too wide, it is given by omega(opt)=1/tau*, where tau* is the relaxation time of a particle having a diameter corresponding to the mode count diameter of the initial size distribution function. The paper also includes the result of a numerical integration of the coalescence equations for typical aerosol distributions, which show their evolution under the influence of a sound wave.
引用
收藏
页码:2294 / 2303
页数:10
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