Streaming of a particulate aerosol due to acoustic excitation

✍ Scribed by R. H. Koebke

• Book ID: 104655964
• Publisher: Springer Netherlands
• Year: 1972
• Tongue: English
• Weight: 704 KB
• Volume: 1
• Category: Article
• ISSN: 0049-6979
• DOI: 10.1007/bf00187708

✦ Synopsis

k2

-co [Qo/ypo] 1/~ Wave number for the case of coarse dust, K = 6~r/zr Specific drag coeff, of a particle, Q -4~rKr Specific heat transfer coeff, of a particle, v D -rn/K Dynamic relaxation time, r T = rne' / Q Thermal relaxation time. Finally, we shall follow the usual practice of denoting time by t, circular frequency by co, the spatial coordinates by x, y, z; and we denote the vector gradient operator by V-i6/ax +jS/6y +kS/az. In so far as the variables p, u, 7-, 0, N, T', and v are concerned, the following subscripting notations are used.

subscript 0 Denotes a zero order or equilibrium value (eg., p0). subscript 1 Denotes a first order or the usual acoustic variable. The first order variables are assumed to depend on time as the real part of e i~t. (eg. Ul -Ul(x) coscot). subscript 2 Denotes a second order variable, which can be thought as a smaller order correction to the first order variables (eg. u2). Angular brackets (...} denote time averages of functions over several cycles of frequency co.