A knowledge of the particle size distribution of disperse systems is of paramount importance in plant design.
For this purpose, significant improvements in detection (optical sondes, needle sondes, grid sensors, tomographic methods) have been achieved in the last years, but at the same time improvements in particle size evaluation up to online-capable algorithms resulted.
However, modeling of variable particle size requires detailed knowledge of interfacial phenomena such as repulsion and fluid outflow.
In the past, two concepts were pursued here
While in the first approach effects such as relative particle position still influenced the measurement results, in the second approach statistically relevant and automated measurement results can be obtained with respect to repulsion, film outflow and coalescence time. This enables a first creation of a database, which in the future will allow closer conclusions based on data evaluation on the system-dependent coalescence phenomenon, which has not yet been understood.
At the same time, this offers an excellent opportunity to match modern simulation methods (molecular dynamics) or simplified interfacial models.