scholarly journals Influence of turbulence on the drop growth in warm clouds, Part I: comparison of numerically and experimentally determined collision kernels

2014 ◽  
Vol 23 (4) ◽  
pp. 397-410 ◽  
Author(s):  
Christoph Siewert ◽  
Róbert Bordás ◽  
Ulrike Wacker ◽  
Klaus D. Beheng ◽  
Rudie P.J. Kunnen ◽  
...  
Keyword(s):  
Collision Kernels

P13-Orientation Velocity-Changing Collision Kernels Studied by Isolated Multipole Echoes

1985 ◽  
Vol 54 (16) ◽  
pp. 1794-1797 ◽  
Author(s):  
A. P. Ghosh ◽  
C. D. Nabors ◽  
M. A. Attili ◽  
J. E. Thomas
Keyword(s):  
Collision Kernels

Molecular radiator reorientation collision kernels from Stark sublevel photon echoes

1986 ◽  
Vol 3 (4) ◽  
pp. 506 ◽  
Author(s):  
J. M. Liang ◽  
R. R. Dasari ◽  
M. S. Feld ◽  
J. E. Thomas
Keyword(s):  
Photon Echoes ◽  
Stark Sublevel ◽  
Collision Kernels

Time Dependent Optical Phase and Imaginary Collision Kernels

1989 ◽  
pp. 58-61 ◽  
Author(s):  
J.E. Thomas ◽  
P.J. Laverty ◽  
K.D. Stokes
Keyword(s):  
Time Dependent ◽  
Optical Phase ◽  
Collision Kernels

scholarly journals Collision kernels from velocity-selective optical pumping with magnetic depolarization

2013 ◽  
Vol 87 (4) ◽  
Author(s):  
T. Bhamre ◽  
R. Marsland ◽  
I. K. Kominis ◽  
B. H. McGuyer ◽  
W. Happer
Keyword(s):  
Optical Pumping ◽  
Collision Kernels

Numerically determined geometric collision kernels in spatially evolving isotropic turbulence relevant for droplets in clouds

2013 ◽  
Vol 127 ◽  
pp. 8-21 ◽  
Author(s):  
R.P.J. Kunnen ◽  
C. Siewert ◽  
M. Meinke ◽  
W. Schröder ◽  
K.D. Beheng
Keyword(s):  
Isotropic Turbulence ◽  
Collision Kernels

Distributions of Micro- and Nano-Sized Particles Under Decaying Turbulence in a Chamber

2003 ◽  
Author(s):  
Z. Charlie Zheng ◽  
N. Zhang
Keyword(s):  
Particle Number ◽  
Particle Number Density ◽  
Particle Sizes ◽  
Size Distributions ◽  
Number Density ◽  
Particle Size Distributions ◽  
Integral Scales ◽  
Decaying Turbulence ◽  
Collision Kernels ◽  
Rectangular Chamber

Distributions of particles from micro- to nano-sizes in a rectangular chamber are investigated under the influence of an impulsively-started, decaying turbulence generated by a jet. The unsteady, compressible flowfield is simulated using a k-ε model and the related turbulence scales are analyzed. Stokes numbers, based on the turbulence microscales and integral scales, are used as the selection criteria for turbulence collision kernels. Population balance models are then used to calculate the particle size distributions. Histories of particle number density at several locations in the chamber have been compared with different initial particle sizes under different jet speeds. Lower coagulation rates have been shown to relate with lower jet speeds.

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