Multi-scale simulations of stirred liquid-liquid dispersions

被引:27
作者
Derksen, J. J. [1 ]
Van Den Akker, H. E. A. [1 ]
机构
[1] Delft Univ Technol, Dept Multiscale Phys, NL-2628 BW Delft, Netherlands
关键词
liquid-liquid dispersion; break-up; coalescence; turbulence; lattice-boltzmann; numerical simulation;
D O I
10.1205/cherd06161
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Direct numerical simulations (DNS) of liquid-liquid dispersions in a three-dimensional periodic domain have been performed by means of the lattice-Boltzmann method. The dispersion was agitated by a random force field such as to produce isotropic turbulence. The turbulence levels and its history were based on a fluid parcel in a turbulently stirred tank traversing the impeller swept region. The DNS provide detailed insight in the coalescence and break-up events brought about by the turbulent flow, the evolution of the drop size distribution in time, and the interaction of the small-scale flow and the droplets as witnessed in terms of the spectral characteristics of the turbulence.
引用
收藏
页码:697 / 702
页数:6
相关论文
共 18 条
[1]   Random forcing of three-dimensional homogeneous turbulence [J].
Alvelius, K .
PHYSICS OF FLUIDS, 1999, 11 (07) :1880-1889
[2]   A COMPUTER-CONTROLLED 4-ROLL MILL FOR INVESTIGATIONS OF PARTICLE AND DROP DYNAMICS IN TWO-DIMENSIONAL LINEAR SHEAR FLOWS [J].
BENTLEY, BJ ;
LEAL, LG .
JOURNAL OF FLUID MECHANICS, 1986, 167 :219-240
[3]   Lattice Boltzmann method for fluid flows [J].
Chen, S ;
Doolen, GD .
ANNUAL REVIEW OF FLUID MECHANICS, 1998, 30 :329-364
[4]   Experimental findings on the scale-up behaviour of the drop size distribution of liquid/liquid dispersions in stirred vessels. [J].
Colenbrander, GW .
10TH EUROPEAN CONFERENCE ON MIXING, 2000, :173-180
[5]   TIPSTREAMING OF DROPS IN SIMPLE SHEAR FLOWS [J].
DEBRUIJN, RA .
CHEMICAL ENGINEERING SCIENCE, 1993, 48 (02) :277-284
[6]   Large eddy simulations on the flow driven by a Rushton turbine [J].
Derksen, J ;
Van den Akker, HEA .
AICHE JOURNAL, 1999, 45 (02) :209-221
[7]   Numerical simulation of solids suspension in a stirred tank [J].
Derksen, JJ .
AICHE JOURNAL, 2003, 49 (11) :2700-2714
[8]   On the three-dimensional Rayleigh-Taylor instability [J].
He, XY ;
Zhang, RY ;
Chen, SY ;
Doolen, GD .
PHYSICS OF FLUIDS, 1999, 11 (05) :1143-1152
[9]   A lattice Boltzmann scheme for incompressible multiphase flow and its application in simulation of Rayleigh-Taylor instability [J].
He, XY ;
Chen, SY ;
Zhang, RY .
JOURNAL OF COMPUTATIONAL PHYSICS, 1999, 152 (02) :642-663
[10]   FUNDAMENTALS OF THE HYDRODYNAMIC MECHANISM OF SPLITTING IN DISPERSION PROCESSES [J].
HINZE, JO .
AICHE JOURNAL, 1955, 1 (03) :289-295