Adaptive Multiply Size Group Method for CFD-Population Balance Modelling of Polydisperse Flows

Siemens Experimenter Siemens Experimenter
Siemens Experimenter

Adaptive Multiply Size Group Method for CFD-Population Balance Modelling of Polydisperse Flows

THE CANADIAN JOURNAL OF CHEMICAL ENGINEERING

 

An adaptive discretisation for population balance equations is presented. The method is combined with the multiphase CFD code STAR-CCM+ of
CD-adapco. In order to account for the multidisperse nature of the flow the dispersed phase is split into M size groups; from the modelling point
of view each group is a separate phase in every aspect but the name. The groups move with their own velocities and exchange mass, momentum,
and energy with other groups and with the continuous phase. Size of a group is not prescribed a priori, but calculated from an additional scalar
equation. A special procedure is designed to ensure that at each point all groups have the same volume fractions. As the particle sizes change
due to coagulation and breakup, the discretisation of the phase space adjusts itself to the new size distribution. Few groups suffice to predict the
mean characteristics of the flow.

 

Pages:

8

 

Volume:

9999

 

Date:

Wednesday, February 18, 2015

 

Author(s):

  • Alexander Vikhansky, CD-adapco
  • Andrew Splawski, CD-adapco

Industry(ies):

  • Chemical Process

Product(s):

  • Simcenter STAR-CCM+