Welcome to the online location of the Population Balance Problem!
Here, you'll find problem statements and Matlab codes used for the
industrial population balance problem developed by R. Bertrum Diemer
(DuPont) and Sheryl H. Ehrman, Vivek Dwivedi, and Patricia Castellanos
(U Maryland). Any questions, please contact Sheryl Ehrman
Original problem statement, 2003
Revised problem statement, 2005
Population balance main program
matlab file ( 2748 Bytes )
This is the main file that calls the other integration and
programs. Note, grade efficiency is calculated assuming a given grade
efficiency curve. For the 2005 version of the problem statement,
grade efficiency is determined via the CHEMCAD analysis of the cyclone,
so this portion can be commented out.
matlab file ( 1040 Bytes )
This bit generates the long differential equations from the
summation and integrates them.
matlab file ( 402 Bytes )
This bit of code calculates the total collision kernal as a
matlab file ( 380 Bytes )
This bit calculates the breakup kernal as a function of particle
These codes were originally written by Brendan Hoffman, Kelly Tipton,
Yechun Wang, and Matt McHale, students during the Spring 2003 Particle
Science and Technology class.